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Travel guide > Oceania > Climate and weather of Guam
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 | Guam |
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The island of Guam has a tropical climate with a rainy season and a dry season.
Temperatures are stable throughout the year (28 to 31°). Rainfall is higher in the hills located in the southwest of the island (2 800 mm per year) than on the coasts (2 000 mm per year).
Rainy season (June to November)
Temperatures reach 31° (they lose five degrees at night) and rainfall is abundant.
Dry season (December to May)
Temperatures are constant (28 to 30°) and rainfall is high.
| When to go to Guam (pleasant climate) |
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The climate of Guam is pleasant during the following months :
| January |
February |
March |
April |
May |
June |
| July |
August |
September |
October |
November |
December |
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Average temperatures and rainfall
 Agana (Capital of Guam)
| Temp |
January |
February |
March |
April |
May |
June |
max |
29° |
29° |
30° |
31° |
31° |
31° |
min |
24° |
24° |
24° |
25° |
25° |
25° |
|
| Temp |
July |
August |
September |
October |
November |
December |
max |
31° |
30° |
30° |
30° |
30° |
30° |
min |
25° |
25° |
25° |
25° |
25° |
25° |
|
| Rain |
January |
February |
March |
April |
May |
June |
mm |
130 |
110 |
70 |
90 |
110 |
180 |
|
| Rain |
July |
August |
September |
October |
November |
December |
mm |
310 |
440 |
360 |
300 |
230 |
150 |
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Agat
| Temp |
January |
February |
March |
April |
May |
June |
max |
29° |
29° |
30° |
31° |
31° |
31° |
min |
22° |
22° |
22° |
23° |
23° |
23° |
|
| Temp |
July |
August |
September |
October |
November |
December |
max |
31° |
31° |
31° |
31° |
30° |
29° |
min |
23° |
23° |
23° |
23° |
23° |
23° |
|
| Rain |
January |
February |
March |
April |
May |
June |
mm |
100 |
90 |
70 |
80 |
120 |
180 |
|
| Rain |
July |
August |
September |
October |
November |
December |
mm |
310 |
450 |
300 |
290 |
220 |
170 |
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Dededo
| Temp |
January |
February |
March |
April |
May |
June |
max |
29° |
29° |
30° |
31° |
31° |
31° |
min |
22° |
22° |
23° |
23° |
24° |
23° |
|
| Temp |
July |
August |
September |
October |
November |
December |
max |
31° |
31° |
31° |
31° |
30° |
30° |
min |
23° |
23° |
23° |
23° |
24° |
23° |
|
| Rain |
January |
February |
March |
April |
May |
June |
mm |
140 |
120 |
100 |
100 |
130 |
160 |
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| Rain |
July |
August |
September |
October |
November |
December |
mm |
280 |
390 |
360 |
330 |
240 |
160 |
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Tamuning
| Temp |
January |
February |
March |
April |
May |
June |
max |
29° |
30° |
30° |
31° |
31° |
31° |
min |
24° |
24° |
24° |
25° |
25° |
25° |
|
| Temp |
July |
August |
September |
October |
November |
December |
max |
31° |
30° |
30° |
31° |
30° |
29° |
min |
25° |
25° |
24° |
25° |
25° |
24° |
|
| Rain |
January |
February |
March |
April |
May |
June |
mm |
110 |
90 |
60 |
80 |
130 |
160 |
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| Rain |
July |
August |
September |
October |
November |
December |
mm |
260 |
360 |
340 |
310 |
210 |
140 |
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Weather data (temperatures and precipitation) for Guam are derived from monthly averages established over the last twenty years.
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The island of Guam is located in the Pacific Ocean, northeast of Palau and southwest of the Northern Mariana Islands.
Capital: Agana
Area: 540 km²
<
Population: 160 000 inhabitants
Languages: English, Chamorro
Currency: US dollar
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Guam
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Where to go in May
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January
