Last updated: July 2, 2025
Understanding the UV Index in Deneysville, South Africa, is crucial for protecting your skin and overall health. The UV Index indicates the strength of ultraviolet radiation from the sun, which can lead to sunburn and long-term skin damage if not carefully monitored. In Deneysville's Cwb climate, where sunny days are more common, being aware of daily UV levels is essential—especially during peak hours when the index reaches 6 around noon. With this knowledge, you can enjoy the beautiful outdoors while safeguarding your skin from harmful UV rays. Stay informed and make sun safety a priority!
The UV Index today showcased a notable increase from the early morning hours, starting at a gentle 1 at 07:00 and 08:00. As the sun rose higher in the sky, the index climbed steadily, reaching a significant 6 by 12:00, indicating a peak in UV radiation and the need for sun protection. The afternoon saw a slight decline, with values dropping to 4 at 14:00 and falling further to 2 by 15:00. As the day wound down, the UV index returned to a safer range, ending the day at 0 by 19:00. It’s crucial to stay informed and safeguard your skin during those high UV hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 5 | moderate | 30 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, seasonal UV changes display notable fluctuations, with January and February typically experiencing the highest UV Index values at 15, categorized as extreme, where the burn time is only 10 minutes. The risk remains elevated in March and April, though slightly lower at 13 and 11, respectively. A shift occurs in May, when the UV Index drops to 7, moving into the high category, allowing for a longer burn time of 25 minutes. June and July maintain a similar risk level, but August sees an increase to 8, categorized as very high, with a reduced burn time of 15 minutes. As the year progresses, September and October return to an extreme exposure level at 11 and 12, while November and December peak again at 14 and 16, respectively. Visitors and residents should exercise extra caution during the high-risk months of January, February, September, October, November, and December, taking protective measures such as wearing sunscreen, hats, and sunglasses to mitigate UV exposure effectively.
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 |
| Deneysville | 15 | 15 | 13 | 11 | 7 | 6 | 6 | 8 | 11 | 12 | 14 | 16 |
| 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 |