Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Marsabit, Kenya, where the sun shines brightly and the risks of excessive UV exposure can be significant. Being aware of UV levels is essential for preventing sunburn and protecting skin health, especially in this area where UV readings can peak at 12 during midday hours. Marsabit’s climate, characterized by its sunny days, can lead to heightened sensitivity to UV radiation. By monitoring the UV Index, you can take proactive measures to shield yourself from harmful rays and maintain skin safety under the African sun.
The UV Index throughout the day showcases a dramatic rise and fall in sun exposure risks. **As the sun climbs, the index starts at a modest 1 at 07:00, escalating to a notable 2 by 08:00. However, from 09:00, it surges to a peak of 12 at both 12:00 and 13:00, indicating the highest risk for skin damage. Fortunately, this intense exposure dips sharply after 14:00, settling at 10 and then tapering off to 6 by 15:00. As evening approaches, the index falls back down to a safe 1 by 17:00, and eventually drops to 0 by 19:00. This clear pattern emphasizes the importance of sun safety during the midday hours when the UV levels reach their zenith.
| 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 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 6 | high | 25 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 |
The UV Index experiences consistently high levels throughout the year, peaking from January to April with values ranging from 14 to 16, categorizing these months as extreme risk for skin damage, where a mere 10 minutes of unprotected sun exposure can lead to burns. While the index slightly decreases during the summer months of June and July to 12, the high-risk designation remains due to the persistent threat of UV radiation. Even in the fall and winter months, the UV Index does not drop below 12, maintaining an extreme exposure category. It’s vital for both residents and visitors to prioritize sun protection, particularly from January through April. Use of broad-spectrum sunscreen, protective clothing, and ensuring limit exposure during peak hours are strongly advised to mitigate health risks associated with prolonged sun exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mombasa UVI | 14 | 14 | 15 | 14 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 12 |
| Marsabit | 14 | 15 | 16 | 15 | 14 | 12 | 12 | 13 | 13 | 13 | 12 | 12 |
| Kikuyu UVI | 15 | 16 | 16 | 16 | 13 | 11 | 11 | 13 | 14 | 14 | 13 | 13 |
| Ruiru UVI | 15 | 16 | 16 | 16 | 13 | 11 | 11 | 13 | 14 | 14 | 13 | 13 |
| Nairobi UVI | 15 | 16 | 16 | 16 | 13 | 11 | 11 | 13 | 14 | 14 | 13 | 13 |
| Nakuru UVI | 16 | 17 | 17 | 17 | 14 | 12 | 13 | 14 | 15 | 15 | 14 | 14 |