Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of George Town, Cayman Islands. With its tropical climate and high UV exposure, knowing the UV levels helps you prevent painful sunburns and protect your skin health. During the hottest hours of the day, especially between 10 AM and 2 PM, UV levels can reach dangerously high levels, peaking at 13, making it essential to stay informed. Whether you're relaxing on the stunning beaches or exploring the vibrant local culture, being aware of the UV Index can help you enjoy the sunshine safely.
The UV Index begins at a mild level of 1 at 07:00, but as the sun climbs higher, it swiftly escalates. By 10:00, it peaks at a critical 9, reaching a maximum of 13 at 12:00, indicating that protective measures are essential. After noon, the index gradually declines, tapering to 7 by 15:00, before dipping to a 2 by 17:00, and finally settling at 0 by 19:00 as the sun sets. This data highlights the importance of sun safety during the hours when UV exposure is at its highest, particularly around midday.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 5 | moderate | 30 min |
10:00 | 9 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 13 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 10 | very high | 15 min |
15:00 | 7 | high | 25 min |
16:00 | 4 | moderate | 30 min |
17:00 | 2 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index experiences significant fluctuations throughout the year, with the highest levels observed from February to August, where it consistently reaches extreme levels of 11 to 13. March, April, May, June, and August mark the highest-risk months, with 10 minutes being the maximum safe exposure time before burning occurs. January, November, and December represent months of very high UV exposure, with slightly longer burn times of 15 minutes. Visitors and residents are strongly advised to take precautions during these high-risk months by wearing sunscreen, protective clothing, and seeking shade when possible, especially during peak sun hours.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
George Town | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 13 | 12 | 11 | 9 | 8 |
North Side UVI | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 13 | 12 | 11 | 9 | 8 |
East End UVI | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 13 | 12 | 11 | 9 | 8 |
Bodden Town UVI | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 13 | 12 | 11 | 9 | 8 |
West Bay UVI | 9 | 10 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 9 | 8 |