San Juan UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index11.9
- Avg Clouds20%
- Max Temp31.7 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in San Juan, Puerto Rico 
will reach a high of 11.9 today. This means a extreme level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-10
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 Juan's UV Index
The UV index in San Juan, Puerto Rico, is usually high, often ranging from 7 to 11 during midday. This means the sun's rays are very strong, especially in the summer months.
Weather Seasons
San Juan has a tropical climate with warm temperatures all year round. The rainy season is from April to November, and the dry season is from December to March. It rarely gets too cold or too hot.
San Juan's Climate
Compared to nearby Caribbean islands, San Juan's weather is fairly typical with warm temperatures and a wet season. It is generally sunnier and less rainy than places like Jamaica or the Dominican Republic.
Hourly UV Index Trend
See the UV index hour by hour for San Juan. When the level is high, it's smart to find some shade.
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