UV Index
UV Index
Today's UV index in Costa Rica, Peru 
will be up to 11.4, indicating a extreme level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-10
UV index at 11.4 in Costa Rica means extreme risk: limit outdoor time especially from 10 a.m. to 4 p.m., actively seek shade, wear protective clothing, broad-brimmed hat, apply SPF 30+ sunscreen every 2 hours, and wear UV-blocking sunglasses. Watch for bright surfaces like water and snow increasing UV exposure.
The UV index in Costa Rica is generally high, often ranging from 8 to 12, especially during midday. In Peru, UV levels vary widely; coastal areas have moderate UV, while high-altitude regions like the Andes can reach very high levels above 11.
Costa Rica has two main seasons: a dry season from December to April and a rainy season from May to November. Peru also has seasonal changes; the coast is dry and mild from May to November, while the rainy season occurs from December to March, with the Andes experiencing cold winters.
Compared to nearby countries, Costa Rica’s tropical climate is wetter and warmer year-round than Peru’s diverse climates. Peru’s weather varies more due to its mountains and desert coast, while Costa Rica maintains more consistent tropical warmth across the region. Neighboring countries like Nicaragua and Panama share a similar tropical climate to Costa Rica, while Bolivia’s climate is more varied like Peru’s.
See the UV index hour by hour for Costa Rica, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.