Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Butare, Rwanda, where the tropical climate often brings intense sun exposure. With UV levels reaching as high as 12 during midday, awareness of these measurements is essential for preventing sunburn and protecting skin health. Regularly checking the UV Index helps you make informed choices about sun protection, particularly during peak hours when the risk of harm is greatest. By staying alert to the UV levels in this vibrant community, you can enjoy the beautiful weather while safeguarding your skin against long-term damage.
At dawn, the UV Index starts low at 1 around 7 AM, gradually rising to 3 by 8 AM. However, from 9 AM, it begins to climb steeply, reaching a peak of 12 at noon, indicating a time for caution and sun protection. The intensity begins to wane in the afternoon, dropping to 8 at 2 PM, and further declining to 5 by 3 PM. As the day winds down, the UV Index lowers significantly to 2 at 4 PM, then 1 at 5 PM, finally fading to 0 after 6 PM. This fluctuation illustrates a clear pattern of midday sun strength, encouraging outdoor enthusiasts to stay vigilant during peak hours.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 9 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 12 | extreme | 10 min |
13:00 | 11 | extreme | 10 min |
14:00 | 8 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 2 | low | 45 min |
17:00 | 1 | low | 45 min |
18:00 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal changes, predominantly remaining in the extreme exposure category throughout the year. The highest indices are recorded from February to March, peaking at 17 in March, while values gradually decline to 12 by June and July. October sees a slight increase to 13, which persists through December. High-risk months for sun exposure are primarily from February to March, making it crucial for visitors and residents to take preventive measures. We advise everyone to wear protective clothing, use sunscreen, and seek shade whenever possible, particularly during peak UV hours to minimize the risk of skin damage.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Gisenyi UVI | 15 | 16 | 16 | 16 | 14 | 12 | 11 | 13 | 14 | 13 | 13 | 13 |
Kigali UVI | 15 | 16 | 16 | 15 | 14 | 12 | 12 | 13 | 14 | 13 | 13 | 13 |
Gitarama UVI | 15 | 16 | 16 | 16 | 14 | 12 | 12 | 13 | 14 | 13 | 13 | 13 |
Butare | 14 | 16 | 17 | 16 | 14 | 12 | 12 | 13 | 15 | 13 | 13 | 13 |
Musanze UVI | 15 | 16 | 17 | 16 | 14 | 12 | 12 | 13 | 14 | 14 | 13 | 14 |