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San José UV Index Today

Day Summary

The UV index in San José, Costa Rica Flag of Costa Rica will reach a high of 13 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.

San José's UV Index

San José, Costa Rica typically has a UV index ranging from moderate to high, peaking around 10 during the dry season months. The UV index is lower during the rainy season but can still reach significant levels.

Weather Seasons

UV index

The city experiences a dry season from December to April and a rainy season from May to November. Temperatures remain warm year-round, with slightly cooler evenings during the dry season and frequent afternoon showers in the rainy season.

San José's Climate

Compared to other parts of Central America, San José has milder temperatures due to its elevation. Neighboring countries often experience hotter and more humid conditions in their lowland areas, while San José enjoys a more temperate climate.

Hourly UV Index Trend

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

Disclaimer

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