Last updated: July 2, 2025
Understanding the UV Index is essential for residents and visitors of Masuguru, Tanzania, as it serves as a crucial tool for protecting skin health and preventing sunburn. With the region's Aw climate, characterized by warm temperatures and abundant sunshine, knowing when ultraviolet radiation levels are high can help you enjoy the outdoors safely. Typically peaking around noon with an index of 10, the sun's intensity poses significant risks if precautions aren't taken. By staying informed about UV levels, you can safeguard yourself and your loved ones against harmful effects while basking in the beauty of Masuguru's vibrant landscapes.
The UV Index for today presents a clear pattern of sun intensity, peaking sharply in the early afternoon. Starting off with a low index of 1 at 7 AM and remaining consistent at the same level until 9 AM, the sun's rays gradually intensify. By 10 AM, the index rises to 6, reaching a notable 8 at 11 AM, and soaring to a maximum of 10 between 12 PM and 1 PM—the critical hours for sun exposure. As the day progresses, the intensity begins to decline, dropping back to 8 by 2 PM, then tapering down to 5 by 3 PM. The late afternoon and evening bring a return to safer levels, with the index falling to 1 at 5 PM and fading to 0 by 7 PM. For those planning outdoor activities, it's essential to stay protected during the 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 | 8 | 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, UV Index values demonstrate significant seasonal variation, with the highest levels recorded from January to April, where the Index consistently hovers around 15, categorizing the exposure as extreme with a burn time of just 10 minutes. May sees a decline to 11, maintaining an extreme category, while June and July transition to a very high risk, allowing for a slightly extended burn time of 15 minutes. As summer wanes, August through October revert to extreme levels, with an Index of 12 to 13 and a burn time of 10 minutes. The high-risk months are thus concentrated from January to April and again in the late summer to early fall. Visitors and residents should always take precautions during these months, including wearing protective clothing, applying sunscreen liberally, and seeking shade during peak sun hours to minimize the risk of harmful UV exposure.
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 |
| Masuguru | 15 | 15 | 15 | 14 | 11 | 9 | 10 | 12 | 13 | 13 | 14 | 14 |
| Mwanza UVI | 14 | 15 | 16 | 15 | 13 | 11 | 11 | 13 | 14 | 13 | 13 | 13 |
| 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 |