San Diego UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index9.1
- Avg Clouds33%
- Max Temp27.1 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in San Diego, United States 
will reach a high of 9.1 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!
Last checked: 2025-09-08
Hourly Forecast Chart
Today's Safety Tips
The risk is very high. It's best to stay out of the sun between 10 a.m. and 4 p.m. If you must be outside, wear protective clothing and apply sunscreen often.
San Diego's UV Index
San Diego has a UV index that usually ranges from moderate to high, especially during summer months when the sun is strongest. The UV levels are lower in winter but still present throughout the year.
Weather Seasons
San Diego experiences mild, wet winters and warm, dry summers. Most rain falls between November and March. The city rarely has extreme temperatures, with summer highs often around the low 70s to mid-80s Fahrenheit and winter lows rarely dropping below 50°F.
San Diego's Climate
Compared to other parts of Southern California and neighboring states, San Diego's weather is milder and less extreme. It is cooler and less rainy than inland areas and warmer and sunnier than many northern U.S. cities. Neighboring Mexico's coastal regions have similar weather patterns.
Hourly UV Index Trend
See the UV index hour by hour for San Diego. When the level is high, it's smart to find some shade.
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