UV Index
UV Index
Today's UV index in Nairobi, Kenya 
will be up to 12.7, 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 12.7 in Nairobi 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.
Nairobi's UV index typically ranges from moderate to high, often between 6 and 11, especially during the dry seasons when the sun is strongest. UV levels peak around midday and are lower in the early morning and late afternoon.
Nairobi has two main rainy seasons: the "long rains" from March to May and the "short rains" from October to December. Temperatures stay mild year-round, usually between 10°C and 26°C, with cooler evenings and warmer afternoons.
Compared to other parts of Kenya, Nairobi is cooler due to its high altitude. Its weather is milder than coastal cities like Mombasa and less hot than the northern regions. Neighboring countries like Uganda and Tanzania have similar tropical patterns but usually warmer lowlands.
See the UV index hour by hour for Nairobi, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.