UV Index
UV Index
Today's UV index in Rio de Janeiro, Brazil 
will be up to 4.7, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-01
With a UV index reaching up to 4.7 in Rio de Janeiro, 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.
The UV index in Rio de Janeiro is often high, especially during summer, frequently reaching levels that indicate strong sun exposure. UV levels tend to peak around midday throughout the year.
Rio experiences a tropical climate with hot, humid summers from December to March, and milder, drier winters from June to August. Rainfall is more common in the summer months, while winters are relatively dry.
Compared to other parts of Brazil, Rio has more consistent warmth and humidity. It is wetter than the interior but less rainy than the Amazon region. Neighboring countries along the coast often share similar tropical, humid weather patterns.
See the UV index hour by hour for Rio de Janeiro, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.