Guam Weather Forecast
Guam weather: 78°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Live radar and satellite over Guam
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Radar frames: RainViewer (global composite, ~10 minute refresh). Satellite: NASA GIBS MODIS true colour, previous day. Coverage and refresh vary by region.
Weather in Guam right now
Source: Open-Meteo. Updated 11:07 PM, Oct 22 local time.
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
See the Guam forecast by time range
Guam weather - more answers
Explore Guam
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Frequently asked questions
Where is Guam?
Guam is a country in Oceania. Its coordinates are 13.4443, 144.7937. It lies in Oceania.
What is the weather like in Guam right now?
It is currently 78°F (26°C) with mainly clear. Humidity is 91% and wind is 12 mph.
When is the best time to visit Guam?
January, February and December offer the most comfortable conditions in Guam, which has a tropical climate. July, August and September are usually the hardest months for outdoor plans.
What time zone is Guam in?
Guam observes Pacific/Guam (UTC+10:00). The local time is 11:07 PM.
How many people live in Guam?
Guam has a population of approximately 170.000.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (countries-v1) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 22, 2026 at 11:07 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
