UV Index
UV Index
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Today's UV index in São Tomé, São Tomé and Príncipe 
will be up to 13.2, indicating extreme 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.
UV index at 13.2 in São Tomé means extreme risk; limit outdoor time from 10 a.m. to 4 p.m., use shade, protective clothing, SPF 30+ sunscreen, and sunglasses; watch for bright surfaces like water and snow increasing UV exposure.
Read more here about the climate and sun exposure in and around São Tomé.
The UV index in São Tomé, São Tomé and Príncipe, remains high throughout the year, with values ranging from 11 to 13 (extreme). This means that exposure to the sun can result in severe skin damage and an increased risk of skin cancer. It is crucial to wear sunscreen, protective clothing, and accessories like sunglasses and hats when going outside to avoid the harmful effects of the sun's ultraviolet rays.
São Tomé experiences two main weather seasons. The dry season, which lasts from June to September, has average temperatures of 26-30 °C (79-86 °F). This period has lower humidity and very little rainfall. The wet season, from October to May, brings higher temperatures of 29-32 °C (84-90 °F) and heavy rainfall. The combination of high temperatures and the abundance of rain during this season leads to a lush and green environment.
Compared to its region, São Tomé has a tropical climate similar to other equatorial areas. It is characterized by high temperatures and humidity year-round. Its proximity to the equator results in consistent sun exposure, making it important to take precautions to protect against the strong UV radiation. Seeking shade during peak hours, using sun protection, and staying hydrated are vital to enjoying the pleasant weather while minimizing the potential risks associated with sun exposure.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in São Tomé. It's designed to provide you with a better understanding of the yearly weather and sun exposure.