Last updated: May 3, 2025
Understanding the UV Index is crucial for the residents and visitors of Kariba, Zimbabwe, where high levels of ultraviolet radiation can pose significant risks to skin health. As temperatures rise in this tropical savanna climate, especially during midday, knowing the UV levels can help prevent sunburn and long-term skin damage. With peak UV Index values soaring to 10 between 12:00 PM and 1:00 PM, it's essential to take proactive measures to protect your skin from harmful sun exposure. Being aware of these levels not only ensures your safety but also enhances your outdoor experience in this stunning region surrounded by beautiful landscapes and rich wildlife.
As the sun rises, the UV Index begins its climb, starting at a modest 1 at 07:00. By 08:00, it gently increases to 2, signaling a day of strengthening rays. The intensity peaks around 12:00 with a striking 10, indicating the time for caution and sun protection. As midday passes, the index gradually declines, dropping to 6 at 14:00 before continuing its descent to 4 at 15:00. By 17:00, it returns to a safer 1, and eventually fades to 0 after 18:00, marking a gentle close to the day. This data underscores the importance of seeking shade and wearing sunscreen during the midday hours when the UV exposure is at its most intense.
| 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 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | 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 experiences significant seasonal changes, with the highest values observed from January to March, where it reaches an extreme level, peaking at 17 in January. April begins a gradual decline, yet still maintains an extreme index of 12. As we transition into the summer months (May through August), the UV Index remains very high, with values around 8 to 10, and burn times increasing to 15 minutes. September marks a return to extreme levels, while October through December generally continue this high-risk trend, with exposures demanding vigilance. Visitors and residents should be particularly cautious during the months of January through April and September through November, taking measures such as wearing protective clothing, applying sunscreen, and seeking shade to minimize the risk of UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kariba | 17 | 16 | 14 | 12 | 10 | 8 | 8 | 10 | 11 | 12 | 14 | 15 |
| Bulawayo UVI | 17 | 16 | 14 | 12 | 9 | 8 | 8 | 10 | 12 | 13 | 15 | 15 |
| Mutare UVI | 17 | 16 | 14 | 12 | 10 | 8 | 8 | 10 | 12 | 13 | 15 | 15 |
| Gweru UVI | 17 | 16 | 14 | 12 | 10 | 8 | 8 | 10 | 12 | 13 | 15 | 15 |
| Chitungwiza UVI | 17 | 16 | 14 | 13 | 10 | 9 | 8 | 10 | 12 | 13 | 15 | 15 |
| Harare UVI | 18 | 16 | 14 | 13 | 10 | 9 | 8 | 11 | 12 | 12 | 15 | 15 |