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Guam

Updated: Wikipedia source

Guam

Guam ( GWAHM; Chamorro: Guåhan [ˈɡʷɑhɑn]) is an island that is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. Guam's capital is Hagåtña, and the most populous village is Dededo. It is the westernmost point and territory of the United States, as measured from the geographic center of the U.S. In Oceania, Guam is the largest and southernmost of the Mariana Islands and the largest island in Micronesia. In 2022, its population was 168,801. Chamorros are its largest ethnic group, but a minority on the multiethnic island. The territory spans 210 square miles (540 km2; 130,000 acres) and has a population density of 775 per square mile (299/km2). Indigenous Guamanians are the Chamorro, who are related to the Austronesian peoples of the Malay Archipelago, the Philippines, Taiwan, and Polynesia. Unlike most of its neighbors, the Chamorro language is not classified as a Micronesian or Polynesian language. Like Palauan, it possibly constitutes an independent branch of the Malayo-Polynesian language family. The Chamorro people settled Guam and the Mariana islands approximately 3,500 years ago. Portuguese explorer Ferdinand Magellan, while in the service of Spain, was the first European to visit and claim the island in March 1521. Guam was fully colonized by Spain in 1668. Between the 17th and 19th centuries, Guam was an important stopover for Spanish Manila galleons. During the Spanish–American War, the United States captured Guam in June 1898. Under the 1898 Treaty of Paris, Spain ceded Guam to the U.S. effective April 11, 1899. Before World War II, Guam was one of five American jurisdictions in the Pacific Ocean, along with Wake Island in Micronesia, American Samoa and Hawaii in Polynesia, and the Philippines. On December 8, 1941, hours after the attack on Pearl Harbor, Guam was captured by the Japanese, who occupied the island for two and a half years before American forces recaptured it on July 21, 1944, which is commemorated there as Liberation Day. Since the 1960s, Guam's economy has been supported primarily by tourism and the U.S. military, for which Guam is a major strategic asset. Its future political status has been a matter of significant discussion, with public opinion polls indicating a strong preference for American statehood. Guam's de facto motto is "Where America's Day Begins", which refers to the island's proximity to the International Date Line. Guam is among the 17 non-self-governing territories listed by the United Nations, and has been a member of the Pacific Community since 1983. Guam is called Guåhan by Chamorro speakers, from the word guaha, meaning 'to have'. Its English gloss 'we have' references the island's providing everything needed to live.

Infobox

Sovereign state
United States
Before annexation
Spanish East Indies
Cession from Spain
December 10, 1898
Capital
Hagåtña
Largest city
Dededo
Official languages
mw- .inline, .inline dl, .inline ol, .inline ul, dl dl, dl ol, dl ul, ol dl, ol ol dd dd dd , dd dt , dd li , dt dd , dt dt , dt li , li dd dd dd , dd dt , dd li , dt dd , dt dt , dt li , li dd dd ol li EnglishChamorro
Ethnic groups (2010)
mw- 49.3% Pacific Islander 36.6% Asian 9.4% Multiracial 7.1% White 0.6% Other
Religion (2010)
94.1% Christianity 1.7% No religion 1.5% Folk religions 1.1% Buddhism 1.6% Other
Demonym(s)
Guamanian
Government
Devolved presidential dependency within a federal republic
• President
Donald Trump (R)
• Governor
Lou Leon Guerrero (D)
• Lieutenant Governor
Josh Tenorio (D)
Legislature
Legislature of Guam
• House delegate
James Moylan (R)
• Total
$6.3 billion
Highest elevation
1,335 ft (407 m)
• 2021 estimate
168,801 (177th)
• Density
299/km2 (774.4/sq mi)
GDP (PPP)
2016 estimate
• Per capita
$37,387
GDP (nominal)
2019 estimate
HDI (2017)
0.901 } }very high
Currency
United States dollar (US$) (USD)
Time zone
UTC 10:00 (ChST)
Date format
mm/dd/yyyy
Driving side
Right
Calling code
1
USPS abbreviation
GU
ISO 3166 code
GUUS-GU
Internet TLD
gu
Website
guam.gov

Tables

Month
Month
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Month
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Jan
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Feb
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Mar
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Apr
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
May
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Jun
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Jul
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Aug
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Sep
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Oct
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Nov
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Dec
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Year
Record high °F (°C)
Record high °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Record high °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
94(34)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
93(34)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
93(34)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
96(36)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
94(34)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
95(35)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
95(35)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
94(34)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
94(34)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
93(34)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
92(33)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
91(33)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
96(36)
Mean maximum °F (°C)
Mean maximum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Mean maximum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.4(31.3)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.5(31.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
89.2(31.8)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
90.2(32.3)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
90.8(32.7)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
91.1(32.8)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
90.8(32.7)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
90.6(32.6)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
90.4(32.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
90.4(32.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
89.9(32.2)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.8(31.6)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
92.0(33.3)
Mean daily maximum °F (°C)
Mean daily maximum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Mean daily maximum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
85.7(29.8)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
85.7(29.8)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
86.7(30.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.9(31.1)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.5(31.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.5(31.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.7(30.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.0(30.6)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.0(30.6)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.2(30.7)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.4(30.8)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
86.6(30.3)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.2(30.7)
Daily mean °F (°C)
Daily mean °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Daily mean °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
80.3(26.8)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
80.1(26.7)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
81.0(27.2)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
82.3(27.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
83.0(28.3)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
83.1(28.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
82.2(27.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
81.5(27.5)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
81.5(27.5)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
81.7(27.6)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
82.2(27.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
81.6(27.6)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
81.7(27.6)
Mean daily minimum °F (°C)
Mean daily minimum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Mean daily minimum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
75.0(23.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
74.6(23.7)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
75.4(24.1)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
76.7(24.8)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
77.5(25.3)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
77.7(25.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
76.8(24.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
76.1(24.5)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
76.0(24.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
76.3(24.6)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
77.0(25.0)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
76.5(24.7)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
76.3(24.6)
Mean minimum °F (°C)
Mean minimum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Mean minimum °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
71.6(22.0)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
71.4(21.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
71.9(22.2)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
73.3(22.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
74.1(23.4)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
74.6(23.7)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
73.8(23.2)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
73.4(23.0)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
73.3(22.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
73.4(23.0)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
73.9(23.3)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
73.3(22.9)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
70.2(21.2)
Record low °F (°C)
Record low °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Record low °F (°C)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
66(19)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
65(18)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
66(19)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
68(20)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
70(21)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
70(21)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
70(21)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
70(21)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
70(21)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
67(19)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
68(20)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
68(20)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
65(18)
Average precipitation inches (mm)
Average precipitation inches (mm)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Average precipitation inches (mm)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
5.34(136)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
4.15(105)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
2.77(70)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
3.50(89)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
4.45(113)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
6.51(165)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
12.25(311)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
17.66(449)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
15.17(385)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
12.73(323)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
8.29(211)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
5.30(135)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
98.12(2,492)
Average precipitation days (≥ 0.01 in)
Average precipitation days (≥ 0.01 in)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Average precipitation days (≥ 0.01 in)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
20.1
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
18.0
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
18.3
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
18.9
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
19.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
23.2
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
26.0
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
25.9
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
25.1
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
25.4
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
23.9
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
22.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
267.2
Average relative humidity (%)
Average relative humidity (%)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Average relative humidity (%)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
83.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
81.9
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
83.1
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
82.0
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
82.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
82.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
87.3
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.8
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
88.3
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
86.6
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
83.0
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
84.9
Mean monthly sunshine hours
Mean monthly sunshine hours
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Mean monthly sunshine hours
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
176.0
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
173.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
216.4
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
214.0
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
219.9
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
193.8
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
156.1
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
142.2
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
132.7
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
132.6
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
135.0
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
143.4
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
2,035.8
Percentage possible sunshine
Percentage possible sunshine
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Percentage possible sunshine
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
50
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
53
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
58
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
57
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
56
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
50
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
39
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
37
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
36
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
36
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
39
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
41
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
46
Source: NOAA (relative humidity and sun 1961–1990)
Source: NOAA (relative humidity and sun 1961–1990)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Source: NOAA (relative humidity and sun 1961–1990)
Climate data for Guam International Airport (1991–2020 normals, extremes 1945–present)
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year
Record high °F (°C)
94(34)
93(34)
93(34)
96(36)
94(34)
95(35)
95(35)
94(34)
94(34)
93(34)
92(33)
91(33)
96(36)
Mean maximum °F (°C)
88.4(31.3)
88.5(31.4)
89.2(31.8)
90.2(32.3)
90.8(32.7)
91.1(32.8)
90.8(32.7)
90.6(32.6)
90.4(32.4)
90.4(32.4)
89.9(32.2)
88.8(31.6)
92.0(33.3)
Mean daily maximum °F (°C)
85.7(29.8)
85.7(29.8)
86.7(30.4)
87.9(31.1)
88.5(31.4)
88.5(31.4)
87.7(30.9)
87.0(30.6)
87.0(30.6)
87.2(30.7)
87.4(30.8)
86.6(30.3)
87.2(30.7)
Daily mean °F (°C)
80.3(26.8)
80.1(26.7)
81.0(27.2)
82.3(27.9)
83.0(28.3)
83.1(28.4)
82.2(27.9)
81.5(27.5)
81.5(27.5)
81.7(27.6)
82.2(27.9)
81.6(27.6)
81.7(27.6)
Mean daily minimum °F (°C)
75.0(23.9)
74.6(23.7)
75.4(24.1)
76.7(24.8)
77.5(25.3)
77.7(25.4)
76.8(24.9)
76.1(24.5)
76.0(24.4)
76.3(24.6)
77.0(25.0)
76.5(24.7)
76.3(24.6)
Mean minimum °F (°C)
71.6(22.0)
71.4(21.9)
71.9(22.2)
73.3(22.9)
74.1(23.4)
74.6(23.7)
73.8(23.2)
73.4(23.0)
73.3(22.9)
73.4(23.0)
73.9(23.3)
73.3(22.9)
70.2(21.2)
Record low °F (°C)
66(19)
65(18)
66(19)
68(20)
70(21)
70(21)
70(21)
70(21)
70(21)
67(19)
68(20)
68(20)
65(18)
Average precipitation inches (mm)
5.34(136)
4.15(105)
2.77(70)
3.50(89)
4.45(113)
6.51(165)
12.25(311)
17.66(449)
15.17(385)
12.73(323)
8.29(211)
5.30(135)
98.12(2,492)
Average precipitation days (≥ 0.01 in)
20.1
18.0
18.3
18.9
19.7
23.2
26.0
25.9
25.1
25.4
23.9
22.7
267.2
Average relative humidity (%)
83.7
81.9
83.1
82.0
82.7
82.7
87.3
88.7
88.8
88.3
86.6
83.0
84.9
Mean monthly sunshine hours
176.0
173.7
216.4
214.0
219.9
193.8
156.1
142.2
132.7
132.6
135.0
143.4
2,035.8
Percentage possible sunshine
50
53
58
57
56
50
39
37
36
36
39
41
46
Source: NOAA (relative humidity and sun 1961–1990)

References

  1. The World Factbook
    https://www.cia.gov/the-world-factbook/countries/guam/
  2. "Guam"
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