Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Dar es Salaam, Tanzania, where the tropical climate can lead to intense sun exposure. With UV levels reaching a maximum of 10—particularly during midday hours—it's essential to be aware of these fluctuations to prevent sunburn and protect overall skin health. By knowing when the UV Index is at its peak, individuals can take proactive steps to minimize risks associated with prolonged sun exposure, especially in a region known for its warm temperatures and strong sunlight. Embrace the sun safely by staying informed about the UV Index in Dar es Salaam!
The UV Index throughout the day showcases a dynamic curve, peaking impressively between 12:00 PM and 1:00 PM with a remarkable score of 10, indicating a high risk of harm from unprotected sun exposure. As the sun rises, the index starts low at 1 by 07:00 AM, gradually increasing to 2 by 08:00 AM, before climbing more steeply to reach 6 by 10:00 AM. The intensity continues to rise until its zenith, with values of 9 at 11:00 AM and the maximum of 10 at noon. After this peak, the UV Index begins its descent, dropping to 8 by 2:00 PM, then gradually tapering off to 5 by 3:00 PM and further to 1 by late afternoon, ultimately falling to 0 by 7:00 PM. It's a reminder to stay protected during those peak hours!
| 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 | 6 | high | 25 min |
| 11:00 | 9 | 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, the UV Index indicates significant seasonal variations, with the highest levels occurring from January to March and again in August. The majority of the months display an extreme exposure category, particularly from January to April and in September. May, though slightly lower, remains a month of concern with a UV Index of 12, while June and July, categorized as very high, offer a brief respite with a burn time of 15 minutes. Visitors and residents should remain vigilant during these high-risk months, especially between January and March when the UV Index peaks at 15, suggesting a burn time of just 10 minutes. It is advisable for everyone to take robust sun protection measures, such as wearing protective clothing, applying sunscreen frequently, and seeking shade during peak hours, to mitigate the risks associated with high 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 | 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 |
| 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 |