UV Index
UV Index
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Today's UV index in Gustavia, Saint Barthélemy 
will be up to 7.4, indicating a high level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With Gustavia's UV index reaching 7.4, 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.
The UV index in Gustavia, Saint Barthélemy, averages around 7-9 during the year, which is considered high. It's important to be aware of this when planning outdoor activities.
Gustavia experiences two main seasons: the dry season from December to May and the wet season from June to November. The dry season has cooler temperatures and lower humidity, while the wet season is warmer and more humid with occasional tropical storms.
Compared to its region and neighboring countries, Gustavia's weather is relatively stable and mild, without the extreme temperatures or natural disasters that can affect other Caribbean islands. This makes it a popular destination for tourists seeking a reliable and enjoyable climate.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Gustavia. It's designed to provide you with a better understanding of the yearly weather and sun exposure.