UV Index
UV Index
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Today's UV index in Santa Ana, United States 
will be up to 2.9, indicating low risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.
Today, the UV index suggests low sun danger (0-2) in Santa Ana, reaching up to 2.9. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.
Read more here about the climate and sun exposure in and around Santa Ana.
The UV index in Santa Ana, United States ranges from moderate to high throughout the year. During summer (June-August), when the weather is hot and sunny, the UV index hovers around 8-10, indicating very high risk of harm from unprotected sun exposure. In spring (March-May) and autumn (September-November), the UV index is generally between 6-8, indicating high risk of harm. Even in winter (December-February), the UV index remains between 4-6, which means there is still a moderate risk of harm from the sun.
Santa Ana experiences a Mediterranean climate with mild, wet winters and warm, dry summers. The average temperature in winter (December-February) ranges from 10-21 °C (50-70 °F), while summer (June-August) temperatures average between 20-30 °C (68-86 °F). Spring (March-May) and autumn (September-November) are transitional seasons with temperatures ranging from 15-25 °C (59-77 °F). Rainfall occurs mainly during the winter months, with an average annual precipitation of 330-360 mm (13-14 inches).
Compared to its region, Santa Ana enjoys a relatively high amount of sunshine throughout the year. It receives about 2800-3000 hours of sunshine annually. However, due to its proximity to the coast, the cool ocean breeze moderates the extreme temperatures Santa Ana might experience. This coastal influence helps to mitigate the heat during summer and keeps temperatures milder during the winter compared to inland areas. Nonetheless, it is important to take precautions against the high UV index when spending time outdoors, especially during the hotter months.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Santa Ana. It's designed to provide you with a better understanding of the yearly weather and sun exposure.