UV Index
UV Index
Today's UV index in São Tomé, São Tomé and Príncipe 
will be up to 10.5, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-21
With a UV index of 10.5 in São Tomé, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
São Tomé has a high UV index year-round, often ranging from moderate to very high, especially from September to April. Sun exposure is intense most days, requiring caution when outside.
The climate is tropical with two main seasons: a rainy season from October to May and a drier season from June to September. Temperatures stay warm all year, averaging around 25-30°C (77-86°F).
Compared to nearby countries like Gabon and Equatorial Guinea, São Tomé experiences more consistent warmth and humidity due to its island location. Its rainfall is heavier than in many mainland areas, making it lush and green.
See the UV index hour by hour for São Tomé, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.