Last updated: July 2, 2025
In Usevia, Tanzania, understanding the UV Index is crucial for safeguarding your skin and overall health. With peak UV levels reaching as high as 11 during midday, awareness of these radiation levels can help prevent sunburn and long-term skin damage. The region's Aw climate means consistent sun exposure, making it essential to stay informed about UV risks throughout the day. By learning to monitor UV levels, residents and visitors alike can take proactive measures to enjoy the sun safely while protecting their skin's health.
The UV Index today presents a dynamic journey from dawn to dusk. Starting off with a 0 at 07:00, early risers are safe from harmful rays. As the sun climbs higher, the index ticks up to 1 by 08:00 and then to 2 at 09:00, signaling the gentle start of UV exposure. 10:00 marks a noticeable increase, soaring to 5, but the peak arrives at 12:00 with an impressive 10—a point where sunscreen becomes a must! The intensity of UV radiation continues to rise, hitting 11 at 13:00, before gradually declining to 7 by 15:00. As the day winds down, the UV Index declines to 4 at 16:00, dipping further to 2 by 17:00, and finally retreating to a safe 0 as evening approaches at 19:00. Plan outdoor activities wisely to stay protected during those peak hours!
| 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 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | 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 |
The UV Index demonstrates significant seasonal variations, with extreme levels typically observed from January through April and consistently high readings from July to October. The months of January, February, March, April, July, August, September, October, November, and December consistently show an extreme exposure category, indicating a burn time of just 10 minutes. May marks a slight decrease to a UV Index of 13, categorized as extreme, with a burn time remaining at 10 minutes, while June presents a moderate reduction to a UV Index of 10, categorized as very high with a burn time of 15 minutes. Residents and visitors are advised to take necessary precautions during these high-risk months, such as wearing protective clothing, applying broad-spectrum sunscreen with SPF 30 or higher, and seeking shade during peak hours to mitigate the risk of severe sunburn and long-term skin damage.
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 |
| Usevia | 15 | 15 | 16 | 16 | 13 | 10 | 11 | 12 | 13 | 13 | 13 | 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 |