Last updated: June 2, 2025
Understanding the UV Index is crucial for the residents of Tatakamotonga, Tonga, where vibrant sun-soaked days can lead to harmful UV exposure. Being informed about UV levels helps in preventing sunburn and maintaining skin health, which is especially important in an environment where the sun's intensity peaks around noon with maximum values of 7. Tatakamotonga’s tropical climate adds to the risk, making it essential for locals and visitors alike to stay aware of daily UV readings. By keeping an eye on these levels, you can enjoy the beautiful outdoors while protecting your skin from potential damage.
As the sun rises at 07:00, the UV Index starts off at a safe 0, perfect for those early morning routines. By 08:00, it nudges up to 1, indicating minimal risk. However, by 09:00, the intensity picks up to 2, signaling a gentle reminder to apply sunscreen if you're heading outdoors. The UV levels reach their peak at 12:00 and 13:00, soaring to a robust 7, which calls for careful sun protection measures. As the afternoon unfolds, the index gradually declines—6 at 14:00, then tapering to 4 by 15:00. The sun begins its descent, dropping back to 2 by 16:00 and further dwindling to 1 at 17:00 before finally retreating to 0 by 18:00 and into the evening. It's a beautiful day, but remember, the sun's rays are strongest during midday!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index experiences significant seasonal variation, with the highest levels occurring from January to April, where the index reaches extreme levels (15-16) and a burn time of only 10 minutes. November and December also present extreme UV conditions. May marks a transition to very high levels (UV Index 9), with a burn time extending to 15 minutes, while June to August see a decrease in UV intensity yet maintain very high levels, particularly in July and August. As September through October approach extreme levels again, it’s crucial for residents and visitors to take precautions year-round. Sunscreen, protective clothing, and limited sun exposure during peak hours (10 AM to 4 PM) are highly advised, especially during the high-risk months of January to April and September to November.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tatakamotonga | 16 | 15 | 14 | 11 | 9 | 7 | 8 | 10 | 11 | 13 | 15 | 16 |
| Haveluloto UVI | 16 | 15 | 14 | 11 | 9 | 7 | 8 | 10 | 11 | 13 | 15 | 16 |
| Lapaha UVI | 16 | 15 | 14 | 11 | 9 | 7 | 8 | 10 | 11 | 13 | 15 | 16 |
| Nuku'alofa UVI | 16 | 15 | 14 | 11 | 9 | 7 | 8 | 10 | 11 | 13 | 15 | 16 |
| Neiafu UVI | 16 | 16 | 15 | 12 | 9 | 7 | 8 | 11 | 12 | 14 | 15 | 16 |