UV Index
UV Index
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Today's UV index in Gustavia, Saint Barthélemy 
will be up to 7.8, indicating high 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.
With Gustavia's UV index reaching 7.8, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours between 10 a.m. and 4 p.m., when UV rays are strongest.
Read more here about the climate and sun exposure in and around Gustavia.
The UV index in Gustavia, Saint Barthélemy, can reach high levels throughout the year. During the summer months (June-August), when the sun is at its strongest, the UV index can often exceed 10 (very high), which means intense sun exposure. It is important to protect your skin by wearing sunscreen, hats, and sunglasses, and seeking shade during peak hours.
Gustavia experiences a tropical climate, with two main seasons: the dry season and the wet season. The dry season lasts from December to May, characterized by warm and dry weather. Average temperatures range from 25 °C to 30 °C (77 °F to 86 °F) during this period. The wet season, from June to November, brings more rain and occasional tropical storms. Despite the rain, temperatures remain fairly consistent.
Compared to other destinations in the region, Gustavia receives a significant amount of sun exposure. Its location in the Caribbean means it enjoys a tropical climate with plenty of sunshine year-round. However, due to its small size and the presence of surrounding islands, Gustavia may experience slightly lower temperatures and milder conditions compared to other Caribbean destinations. Nevertheless, it is still important to be mindful of the strong sun and take appropriate precautions.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Gustavia. It's designed to provide you with a better understanding of the yearly weather and sun exposure.