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The best time to visit Guam
January, February, March, April and May — daytime highs around 30°C. Every number on this page is measured, not guessed.
Guam month by month
| Month | Day | Night | Wet days | |
|---|---|---|---|---|
| January | 29°C | 25°C | 15 | Best |
| February | 29°C | 25°C | 15 | Best |
| March | 30°C | 25°C | 17 | Best |
| April | 30°C | 25°C | 18 | Best |
| May | 30°C | 26°C | 22 | Best |
| June | 30°C | 25°C | 24 | Shoulder |
| July | 30°C | 25°C | 30 | |
| August | 30°C | 25°C | 30 | |
| September | 30°C | 25°C | 29 | |
| October | 30°C | 25°C | 29 | |
| November | 30°C | 26°C | 23 | |
| December | 29°C | 25°C | 20 | Shoulder |
The short version
Warmest: March, around 30°C by day. Coolest: January, around 29°C by day and 25°C at night. Wettest: July with about 30 wet days. Driest: January with about 15.
If you want fewer people: June, December sit right beside the best months. The weather is close and the crowds are not.
Book it for those months
Prices climb as the good months fill up.
Common questions
When is the best time to visit Guam?
The best months are January, February, March, April and May, when daytime highs sit around 30°C.
What is the hottest month in Guam?
March, with daytime highs around 30°C.
What is the wettest month in Guam?
July, with about 30 wet days. The driest is January with about 15.
When is the cheapest time to visit Guam?
Prices follow the weather. The months either side of the best ones — June, December — are usually cheaper with similar conditions.
Temperatures and wet days are measured, not estimated: ERA5 reanalysis for 2021-2023, at Agana Heights Village, Agana Heights. Source: Open-Meteo.