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Best time to visit Guam
Find the best time to visit Guam and plan your perfect trip in 2024/2025. Get holiday inspiration, weather guides, travel advice and find great deals.
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When is the best time to visit Guam?
Max Day Temperature (°C)
Best time to visit
The weather guide for Guam, represented by Agana, (Agana) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
Which is the hottest month in Guam?
The hottest time of year in Agana, Guam is normally September. Expect maximum daytime temperatures to reach 31°C with very high heat and humidity.
Which month has the most rain in Guam?
In terms of rainfall, August is usually the wettest month in Agana, Guam with 363mm on average. There are normally 20 days in August with some rain.
When is it sunniest in Guam?
The sunniest time of year in Agana, Guam is normally March with bright sunshine on average for 58% of daylight hours; that's 7 hours of sunshine per day.
When is the sea warmest in Guam?
The sea is usually at its warmest in Agana, Guam in August when the water temperature reaches 29°C.
Guam travel features
Do you want to learn more about Guam? Read our latest features covering travel tips and insider destination guides on where to go and what to do in Guam.
We don't currently have any travel features on Guam. Discover more about holiday destinations around the world with this selection of general travel articles.
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