Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Nukunonu, Tokelau, where the tropical climate brings with it unique sun exposure risks. With peak UV levels often reaching as high as 10 during midday hours, staying informed about UV intensity is vital for preventing sunburn and protecting overall skin health. By being aware of the UV Index, you can take essential precautions to enjoy the beautiful sunshine while minimizing your risk of skin damage. In this sun-drenched paradise, where the warm Af climate amplifies UV exposure, knowledge truly is your best defense against harmful rays!
The UV index for the day starts off mild, with a maximum of 1 at both 07:00 and 08:00. As the sun climbs higher, expect a gradual increase, peaking at 12:00 and 13:00 with a high index of 10—a clear signal to protect your skin. The intensity wanes by 14:00, dropping to 8, and continues to taper off through the afternoon. By 17:00, the index falls back to 1, finally sinking to a 0 by 19:00, marking a safe return to evening activities. Remember, the midday sun can be fierce; stay protected during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | 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 |
Throughout the year, the UV Index remains notably high in this region, particularly during the early months, where values peak at 16 from January to March. These months, classified within the extreme exposure category, demand caution, as the burn time is just 10 minutes. As spring transitions to summer, the index decreases slightly to 12-14 in April and May, followed by a drop to 10 in June and July, categorized as very high with a burn time extended to 15 minutes. However, August sees a resurgence to 13, while September and October maintain 14-15, returning to the extreme classification. November and December consistently fall within the 14 range. Visitors and residents are advised to take necessary precautions year-round, utilizing sunscreen, protective clothing, and limiting sun exposure, particularly during high-risk months from January through September.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fale old settlement UVI | 15 | 16 | 16 | 14 | 12 | 10 | 10 | 13 | 14 | 15 | 14 | 14 |
| Nukunonu | 16 | 16 | 16 | 14 | 12 | 10 | 10 | 13 | 14 | 15 | 14 | 14 |
| Atafu Village UVI | 15 | 16 | 16 | 14 | 12 | 11 | 10 | 13 | 14 | 15 | 14 | 14 |