Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Roseau, Dominica, where the tropical climate brings intense sun exposure throughout the year. Being aware of UV levels helps prevent sunburn, protects skin health, and reduces the risk of long-term effects like skin cancer. With peak UV readings often reaching a staggering 14 around noon, it’s vital to take precautions. As you enjoy the beautiful sunny days in Roseau, staying informed about UV risks can ensure that you have a safe and enjoyable experience under the Caribbean sun.
The UV Index today showcases a dramatic rise in intensity as the sun reaches its zenith. Starting at a minimal 1 at 07:00, the index climbs steadily, peaking at an impressive 14 by 12:00, marking the day's highest point of sun exposure. From 11:00 to 13:00, when the UV Index registers between 12 and 13, it's crucial to protect your skin from potential damage. As the afternoon progresses, the index begins to dip, settling back to 10 at 14:00 and gradually declining to 1 by 17:00, making the evening safer for outdoor activities. With a final reading of 0 at 19:00, the day's sunlight wanes, urging caution for those venturing out during peak hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 10 | very high | 15 min |
11:00 | 12 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 10 | very high | 15 min |
15:00 | 7 | high | 25 min |
16:00 | 3 | moderate | 30 min |
17:00 | 1 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index shows significant seasonal variations, with the most intense exposure occurring from February through October, where the index reaches levels categorized as extreme. During these months, particularly in March, April, May, July, and August, the UV Index peaks at 13 to 14, indicating a very short burn time of just 10 minutes. January, November, and December feature lower UV levels, classified as very high, with slightly longer burn times of 15 minutes. Visitors and residents should exercise caution during the high-risk months by seeking shade, wearing protective clothing, and applying sunscreen frequently to mitigate the risk of UV-related harm.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Marigot UVI | 10 | 11 | 13 | 14 | 14 | 13 | 14 | 13 | 13 | 12 | 10 | 9 |
Portsmouth UVI | 10 | 11 | 13 | 14 | 14 | 13 | 14 | 13 | 13 | 12 | 10 | 9 |
Roseau | 10 | 11 | 13 | 14 | 14 | 13 | 14 | 13 | 13 | 12 | 10 | 9 |
Mahaut UVI | 10 | 11 | 13 | 14 | 14 | 13 | 14 | 13 | 13 | 12 | 10 | 9 |
Berekua UVI | 10 | 11 | 13 | 14 | 14 | 13 | 14 | 13 | 13 | 12 | 10 | 9 |