When is the best time to visit Guam?
The best time to visit Guam is between December and May, the most comfortable stretch of the year on these averages.
Temperatures peak in June at around 28°C (83°F). August is the wettest month, with about 445 mm of rain. Guam has a distinct rainy season from July to October, peaking in August at about 445 mm. The dry season runs from November to June.
Guam weather by month
TemperatureRainfall
Average temperature and rainfall, month by month
Every figure below is a 1991–2020 climate normal for Guam, in °C and °F. Open a month for what to expect and what to pack.
| Month | Average | Rainfall |
|---|---|---|
| January | 27°C / 80°F | 135 mm |
| February | 27°C / 80°F | 105 mm |
| March | 27°C / 81°F | 70 mm |
| April | 28°C / 82°F | 88 mm |
| May | 28°C / 83°F | 111 mm |
| June | 28°C / 83°F | 182 mm |
| July | 28°C / 82°F | 301 mm |
| August | 28°C / 82°F | 445 mm |
| September | 28°C / 82°F | 376 mm |
| October | 28°C / 82°F | 322 mm |
| November | 28°C / 82°F | 209 mm |
| December | 28°C / 82°F | 164 mm |
Travel guides for Guam
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FAQs about Guam weather
Climate averages for Guam, 1991–2020.
The best time to visit Guam is between December and May, the most comfortable stretch of the year on these averages.
June is the hottest month, with an average around 28°C.
August is the wettest month, with about 445 mm of rain.
Guam has a distinct rainy season from July to October, peaking in August at about 445 mm. The dry season runs from November to June.
February is the coolest month, averaging 27°C (80°F) against 28°C (83°F) in June.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what each month is usually like, which is what you want when booking ahead. For today or the coming week, check a live forecast.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
