Last updated: May 3, 2025
In Merelani, Tanzania, being aware of the UV Index is essential for protecting your skin and overall health. Understanding UV levels is crucial for preventing sunburn and reducing the risk of skin cancer, especially in a region where the climate tends to feature strong sunlight and high UV exposure. On sunny days, UV levels can reach a maximum of 13 around noon, indicating severe risk for harm without adequate protection. By keeping track of the UV Index, you can enjoy the outdoors while safeguarding your skin in this vibrant, sun-drenched environment.
The UV Index reveals a dynamic pattern throughout the day, starting off modestly at 1 by 07:00, then steadily climbing as the sun rises. By 09:00, it reaches 4, marking the beginning of the peak solar intensity. The intensity escalates rapidly, peaking at a striking 13 between 12:00 and 13:00, indicating that sun protection becomes essential during these hours. As afternoon transitions to evening, the UV Index begins to decline, dipping to 7 by 15:00 and falling to 1 by 17:00. Finally, it dwindles to 0 by 19:00, showcasing a dramatic drop in solar exposure as the day ends. Plan your sun protection wisely to enjoy the day's brightness safely!
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 | 8 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 13 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 11 | extreme | 10 min |
15:00 | 7 | high | 25 min |
16:00 | 4 | 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 consistently extreme, with the highest values recorded from January to April, averaging between 15 and 16. High-risk months for UV exposure include February and March, where the UV Index peaks at 16, indicating a very short burn time of only 10 minutes. Despite slightly lower values in the summer months of June and July (UV Index 11), precautions remain essential, as the exposure level remains extreme. Visitors and residents are advised to take protective measures seriously, especially during these high-risk months, by using sunscreen, wearing protective clothing, and seeking shade to mitigate the risk of UV-related health issues. As a general guideline, it's crucial to stay vigilant against UV exposure throughout the year, as the burn time remains constant at just 10 minutes across all 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 |
Merelani | 15 | 16 | 16 | 15 | 13 | 11 | 11 | 13 | 14 | 14 | 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 |