Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Nukunonu, Tokelau, where the tropical climate can lead to significant sun exposure. With UV levels peaking at a dangerous 10 around midday, it's essential to be aware of these fluctuations to protect against sunburn and long-term skin health issues. In this vibrant atoll, enjoying the outdoors is delightful, but understanding the UV risks associated with such a climate can make all the difference in staying safe while soaking up the sun. Stay informed and ensure your time in Nukunonu is both enjoyable and safe!
The UV Index throughout the day showcases a dynamic curve, peaking impressively between 12:00 PM and 1:00 PM with a remarkable score of 10, indicating a high risk of harm from unprotected sun exposure. As the sun rises, the index starts low at 1 by 07:00 AM, gradually increasing to 2 by 08:00 AM, before climbing more steeply to reach 6 by 10:00 AM. The intensity continues to rise until its zenith, with values of 9 at 11:00 AM and the maximum of 10 at noon. After this peak, the UV Index begins its descent, dropping to 8 by 2:00 PM, then gradually tapering off to 5 by 3:00 PM and further to 1 by late afternoon, ultimately falling to 0 by 7:00 PM. It's a reminder to stay protected during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | 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 | 5 | moderate | 30 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 |