Guam Weather Forecast
Guam weather: 89°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Live radar and satellite over Guam
Open the layers control on the map to switch rain radar and cloud imagery on. Both load only when you ask for them.
Radar frames: RainViewer (global composite, ~10 minute refresh). Satellite: NASA GIBS MODIS true colour, previous day. Coverage and refresh vary by region.
Active alerts for Guam
Derived from the forecast. No official alert feed is wired for this country yet.
Weather in Guam right now
Use SPF 30+, a hat and sunglasses; seek shade near midday.
Source: Open-Meteo. Updated 5:36 PM, Aug 25 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
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
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 89°F (32°C) with overcast. Humidity is 61% and wind is 11 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 5:36 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 August 25, 2026 at 5:36 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
