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Hagåtña UV Index Today

Day Summary

The UV index in Hagåtña, Guam Flag of Guam will reach a high of 13.6 today. This means a extreme level of sun exposure. See our tips below to stay safe!

Last checked: 2025-08-04

Hourly Forecast Chart

Today's Safety Tips

Extreme danger! Avoid being in the sun, especially during midday. If you go out, cover up with clothing, a hat, and sunglasses, and use plenty of sunscreen.

Hagåtña's UV Index

The UV index in Hagåtña, Guam, is usually very high year-round, often ranging from 8 to 11, meaning the sun’s rays are strong and can cause sunburn quickly.

Weather Seasons

UV index

Hagåtña has a tropical climate with little temperature change throughout the year. It has a wet season from July to November and a dry season from December to June. Rainfall is heavier during the wet season.

Hagåtña's Climate

Compared to nearby islands, Guam’s weather is warmer and more humid than places like the Philippines or Japan. It is wetter than some Pacific islands but less windy than others during typhoon season.

Hourly UV Index Trend

See the UV index hour by hour for Hagåtña. When the level is high, it's smart to find some shade.

Disclaimer

* The information on this page about the UV index in Hagåtña is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.