Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Igunga, Tanzania, where the sun shines intensely, particularly due to its Aw climate. Being aware of UV levels helps prevent sunburn and promotes overall skin health, making it imperative to take the necessary precautions during peak exposure times. With ultraviolet radiation peaking at an alarming 12 between noon and 1 PM, the risks for severe skin damage are heightened, especially in a region known for its tropical sun. By staying informed about the daily UV Index, you can safeguard your skin and enjoy all that Igunga has to offer without compromise.
The UV Index throughout the day reveals a dynamic shift in sun strength. Starting off with a gentle maximum of 1 at both 07:00 and 08:00, the intensity begins to rise, reaching a moderate level of 3 by 09:00. As the clock strikes 10:00, the index leaps to 6, and by 11:00, it surges to 9, indicating increasing caution is needed. The day peaks at a scorching 11 at 12:00 and reaches its zenith with an astounding 12 at 13:00. A gradual decline follows, with levels dropping to 10 at 14:00, then 7 at 15:00, and finally settling back to 4 at 16:00. As the sun starts to set, the index plummets to 2 at 17:00, then quiets to 1 by 18:00, before dropping to 0 at 19:00. Be sure to take care 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 | 11 | 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 |
Throughout the year, UV Index levels remain consistently high, peaking at 16 in January, February, March, and April, categorized as extreme, with an alarming burn time of just 10 minutes. This high-risk period for UV exposure continues into spring, with May seeing a slight drop to 13, yet still warrants caution. As summer approaches, the index tapers slightly, ranging between 11 and 13 from June to August, yet remains in the extreme category. The trend continues into September and October, where the UV index is again marked at 15 and 13, respectively, maintaining the extreme designation. Finally, November and December keep the index at 13 and 14, ensuring that even during winter months, residents and visitors should remain vigilant. To minimize risk, it's crucial for everyone to wear adequate sun protection, such as sunscreen, clothing, and hats, especially during these high-risk months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zanzibar UVI | 14 | 14 | 14 | 14 | 12 | 10 | 10 | 12 | 13 | 13 | 13 | 13 |
| Dar es Salaam UVI | 14 | 14 | 15 | 14 | 12 | 10 | 10 | 12 | 13 | 13 | 13 | 13 |
| Mwanza UVI | 14 | 15 | 16 | 15 | 13 | 11 | 11 | 13 | 14 | 13 | 13 | 13 |
| Igunga | 15 | 16 | 16 | 16 | 13 | 11 | 12 | 13 | 15 | 13 | 13 | 14 |
| Arusha UVI | 15 | 16 | 16 | 16 | 14 | 12 | 12 | 13 | 14 | 14 | 13 | 14 |
| Mbeya UVI | 16 | 16 | 16 | 16 | 13 | 11 | 11 | 13 | 14 | 14 | 14 | 15 |