Hagåtña weather by month & the best time to visit
Guam · beach resort · tropical monsoon climate
The best time to visit Hagåtña is March — its sunniest month (Sunshine Score 88/100), with April and February close behind. Hagåtña averages about 2,847 hours of sunshine a year. Daytime highs around 27°C / 81°F and roughly 42 mm of rain in March.
When is the best time to visit Hagåtña?
For sunshine, the best time to visit Hagåtña is March, then April and February. The dullest month is July (68/100, 197 mm of rain). The full month-by-month picture is in the table below.
How sunny is Hagåtña?
Hagåtña gets a lot of sun: around 2,847 hours a year. March (88/100) is noticeably better than July (68). It is the only destination Sunshine Atlas tracks in Guam. Rain has a clear season: the wettest stretch, around September, carries about 51% of the annual 1,607 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 81 | 27° / 81°F | 27° / 81°F | 82 mm | 9 | 29° / 84°F |
| February | 86 | 27° / 81°F | 26° / 79°F | 51 mm | 11 | 28° / 82°F |
| March | 88 | 27° / 81°F | 26° / 79°F | 42 mm | 12 | 28° / 82°F |
| April | 87 | 28° / 82°F | 27° / 81°F | 47 mm | 13 | 29° / 84°F |
| May | 84 | 28° / 82°F | 28° / 82°F | 62 mm | 12 | 29° / 84°F |
| June | 78 | 29° / 84°F | 28° / 82°F | 97 mm | 12 | 30° / 86°F |
| July | 68 | 28° / 82°F | 28° / 82°F | 197 mm | 11 | 30° / 86°F |
| August | 68 | 28° / 82°F | 28° / 82°F | 315 mm | 11 | 31° / 88°F |
| September | 68 | 28° / 82°F | 28° / 82°F | 278 mm | 11 | 30° / 86°F |
| October | 68 | 28° / 82°F | 28° / 82°F | 231 mm | 10 | 30° / 86°F |
| November | 71 | 28° / 82°F | 28° / 82°F | 136 mm | 9 | 30° / 86°F |
| December | 83 | 28° / 82°F | 27° / 81°F | 69 mm | 9 | 29° / 84°F |
Sea temperature in Hagåtña by month
The sea off Hagåtña is warmest in August at around 31°C / 88°F, and coolest in February at 28°C / 82°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
How Hagåtña compares month by month: Hagåtña vs Jayapura · Hagåtña vs Manokwari · Hagåtña vs Saipan · all comparisons
Hagåtña: questions and answers
What kind of destination is Hagåtña?
Hagåtña is a beach resort in Guam with a tropical monsoon climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Hagåtña get a year?
Hagåtña gets about 2,847 hours of sunshine a year, at its best around March.
When is the best time to visit Hagåtña?
The sunniest time to visit Hagåtña is March, when the Sunshine Score peaks at 88/100 (with April and February close behind). Expect daytime highs around 27°C / 81°F.
What is the least sunny month in Hagåtña?
July is the least sunny month in Hagåtña, scoring 68/100 with about 197 mm of rain.
What is the sea temperature in Hagåtña?
The sea in Hagåtña ranges from about 28°C (February) to 31°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Hagåtña?
The typical midday UV index in Hagåtña peaks around 13 (extreme) in April, easing to about 9 (very high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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