UV Index
UV Index
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Today's UV index in Chula Vista, United States 
will be up to 3, indicating moderate 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.
With a UV index reaching up to 3 in Chula Vista, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Read more here about the climate and sun exposure in and around Chula Vista.
The UV index in Chula Vista ranges from moderate to high throughout the year. During summer (June to August), the UV index can reach as high as 10, meaning it is extremely important to protect your skin from sunburn. In winter (December to February), the UV index is lower but can still reach moderate levels, so sunscreen is still advisable.
Chula Vista experiences a Mediterranean climate with mild, wet winters and warm, dry summers. The winter temperatures range from 10 °C to 18 °C (50 °F to 64 °F), while summer temperatures range from 20 °C to 28 °C (68 °F to 82 °F). Spring and autumn are transitional seasons, with temperatures averaging between 15 °C to 23 °C (59 °F to 73 °F).
Compared to its region, Chula Vista enjoys a relatively sunny climate. It receives about 266 sunny days per year, which is higher than the national average. However, the region can also experience coastal fog during the summer months, known as "June Gloom," which can temporarily lower sun exposure. Overall, Chula Vista offers plenty of sunshine, so remember to protect yourself from the strong UV rays.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Chula Vista. It's designed to provide you with a better understanding of the yearly weather and sun exposure.