Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Mulanje, Malawi, where the sun’s rays can be potent. With a tropical climate that often brings intense sunlight, being aware of UV levels helps in preventing sunburn and protecting your skin health. During peak hours, especially between 11:00 AM and 1:00 PM, the UV Index can reach highs of 9, indicating a severe risk of harm from unprotected sun exposure. By keeping an eye on these levels, you can enjoy the beautiful landscapes of Mulanje while staying safe from the potential dangers of UV radiation.
As the sun climbs higher in the sky, the UV Index reaches its peak during midday, showcasing a striking pattern in the hourly data. Starting at a modest 1 by 07:00, it gradually escalates, hitting 2 by 08:00. The intensity continues to rise, peaking at a formidable 9 by both 11:00 and 12:00—a clear invitation to slather on the sunscreen! As the afternoon progresses, the index begins to decline, dropping to 7 at 13:00, and gently tapering off to 3 by 15:00. By late afternoon and into the evening, the UV threat recedes, plummeting to 1 at 16:00, and finally fading into 0 from 18:00 onward. This hourly journey underscores the importance of sun safety at its zenith!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 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 exposure remains extremely high from January to April, with a UV Index consistently above 16, indicating a very short burn time of just 10 minutes. Even as spring transitions into early summer, UV levels remain very high from May to July, though burn times lengthen slightly to 15 minutes. The UV Index starts to fluctuate in August, indicating a shift back to extreme levels, with September and October displaying similar trends. November and December also reveal elevated UV levels, leaving those months at a 15 UV index, with a burn time of 10 minutes. Visitors and residents should take diligent precautions from January through December, especially during high-risk months from January to April and August to November, by wearing protective clothing, using high-SPF sunscreen, and limiting sun exposure to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Mulanje | 17 | 17 | 16 | 13 | 10 | 9 | 9 | 11 | 13 | 12 | 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 |