Last updated: August 1, 2025
Understanding the UV Index in Dendron, South Africa is vital for protecting your skin against harmful sun exposure. As a region characterized by a BSh climate, residents and visitors must be aware of daily UV levels to help prevent sunburn and promote long-term skin health. With UV Index readings peaking at 7 during midday hours, understanding these levels is essential for planning outdoor activities safely. Taking proactive measures against UV exposure can make all the difference in enjoying the sun while keeping your skin safe in Dendron’s sunny environment.
At dawn, the UV Index starts off low, with a maximum of 1 at 07:00 and 08:00. As the sun rises higher, it reaches 3 by 09:00, before climbing to a peak of 7 at 12:00. This midday intensity signifies a need for sun protection, especially during the height of the day when UV exposure is most potent. The index begins to decline in the afternoon, dropping to 5 at 14:00 and settling back to 1 by 17:00. By 18:00 and into the evening, the UV Index sharply drops to 0, marking a safe time to enjoy outdoor activities without the risk of sunburn. Stay sun-safe!
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | 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 exhibits significant seasonal changes, with the highest measurements occurring from January to April, where the UV Index remains in the extreme range (16-11) and the burn time is limited to 10 minutes. Specifically, January through April are marked as the high-risk months, necessitating heightened awareness and protective measures against sun exposure. As we move into May and June, the UV Index drops to 8 and 6, categorized as very high and high, respectively, with burn times extending to 15 and 25 minutes. July and August maintain this lower UV range but shift back into the very high category in August, emphasizing the need for continued caution. A rise in UV levels occurs again in September and October, back to extreme, and remains elevated in November and December. Visitors and residents alike should be vigilant during these months, utilizing sunscreen, wearing protective clothing, and seeking shade, particularly during peak sun hours, to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cape Town UVI | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 9 | 11 | 12 | 14 |
| Durban UVI | 14 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 11 | 13 | 15 |
| Johannesburg UVI | 15 | 15 | 13 | 10 | 7 | 6 | 6 | 8 | 11 | 12 | 14 | 16 |
| Pretoria UVI | 16 | 15 | 13 | 10 | 7 | 6 | 6 | 9 | 11 | 13 | 14 | 16 |
| Soweto UVI | 16 | 15 | 13 | 11 | 7 | 6 | 6 | 8 | 11 | 13 | 15 | 16 |
| Dendron | 16 | 15 | 13 | 11 | 8 | 6 | 7 | 9 | 11 | 13 | 15 | 15 |