Last updated: June 2, 2025
Understanding the UV Index is essential for residents of Nsanje, Malawi, where the intense sun can pose significant risks for skin health. Regularly monitoring UV levels helps in preventing sunburn and protecting against long-term skin damage, especially during the peak hours of exposure. In Nsanje’s warm Aw climate, the UV index can reach heights of 8 around midday, indicating a high risk of harm from unprotected sun exposure. Being aware of these levels enables you to take proactive measures, ensuring safe outdoor activities while enjoying the beautiful Malawian sun.
At dawn, the UV Index starts off low at 1 at 7:00 AM, gradually climbing to a moderate 2 by 8:00 AM. As the sun rises higher in the sky, the UV intensity peaks with values soaring to 8 at both 11:00 AM and 12:00 PM, indicating a need for sun protection. The index then begins to dip, falling to 7 at 1:00 PM and further down to 4 by 2:00 PM, revealing a gradual reduction in UV exposure as the afternoon progresses. By mid-afternoon, the levels continue to decline, resting at 2 by 3:00 PM and eventually returning to 1 by 4:00 PM. As the day winds down into the evening, UV levels drop to 0 by 6:00 PM, signaling a safe time to enjoy the outdoors without concern for UV exposure.
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 | 7 | high | 25 min |
11:00 | 8 | very high | 15 min |
12:00 | 8 | very high | 15 min |
13:00 | 7 | high | 25 min |
14:00 | 4 | moderate | 30 min |
15:00 | 2 | low | 45 min |
16:00 | 1 | low | 45 min |
17:00 | 1 | low | 45 min |
18:00 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels demonstrate significant seasonal variation, with the highest indices occurring from January to March. During these months, the UV Index reaches a peak of 16 and is categorized as extreme, meaning unprotected skin can burn in just 10 minutes. As the year progresses into April, the index drops slightly to 12, remaining extreme, before transitioning to very high levels of 9-10 from May to August, where the burn time increases to 15 minutes. A notable rise occurs again in September as the index spikes to 12, followed by October and November at 14. Residents and visitors are advised to exercise extreme caution from January to April and again in September through November, ensuring adequate sun protection such as sunscreen, hats, and protective clothing, especially during peak sun hours.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Nsanje | 16 | 16 | 15 | 12 | 9 | 8 | 8 | 10 | 12 | 12 | 14 | 14 |
Blantyre UVI | 17 | 17 | 16 | 12 | 10 | 8 | 9 | 11 | 12 | 12 | 14 | 15 |
Zomba UVI | 17 | 17 | 16 | 13 | 10 | 9 | 9 | 11 | 13 | 13 | 15 | 15 |
Lilongwe UVI | 17 | 17 | 16 | 14 | 11 | 9 | 10 | 12 | 13 | 13 | 15 | 16 |
Mzuzu UVI | 16 | 16 | 16 | 15 | 11 | 10 | 10 | 12 | 13 | 13 | 14 | 16 |
Kasungu UVI | 16 | 17 | 16 | 14 | 11 | 9 | 10 | 12 | 13 | 13 | 15 | 16 |