Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of Jamestown, Australia, especially given the region's BSk climate, which can lead to varying UV exposure levels throughout the day. Knowing the UV levels is essential not only for preventing sunburn but also for protecting your long-term skin health. With peak UV levels reaching up to 4 around midday, it’s important for the community to stay informed about when to seek shade and wear protective clothing. By being aware, you can enjoy the outdoor beauty of Jamestown while safeguarding yourself against harmful UV radiation.
Today's UV Index starts off gently, peaking between 11:00 AM and 1:00 PM with a maximum value of 4, indicating moderate exposure risk. The morning begins at a mild 1 around 7:00 AM and 8:00 AM, gradually climbing to 2 by 9:00 AM. The sun reaches its zenith at 10:00 AM, hitting 3, before stabilizing at 4 during the late morning to early afternoon hours. However, as the day progresses past 2:00 PM, the UV levels begin to dip, dropping to 1 by 3:00 PM and fading to 0 by 5:00 PM onwards. This gradual decline invites a more relaxed afternoon, perfect for enjoying outdoor activities while being mindful of sun safety during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 3 | 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 |
The UV Index exhibits significant seasonal variations, peaking during the winter and late fall months. From January to March, the index remains in the extreme category, with values ranging from 14 to 15 and a burn time of just 10 minutes, making these the highest risk months for UV exposure. In April, the index drops slightly to 9, shifting to very high, and maintaining that level through September. Meanwhile, June and July see a moderate index of 4, offering some relief. However, as October approaches, the UV Index rises again to 11, remaining in the extreme category until December, which peaks at 16. Visitors and residents are strongly advised to take precautions during these high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially when heading outdoors.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Melbourne UVI | 14 | 12 | 11 | 7 | 4 | 3 | 3 | 5 | 7 | 9 | 12 | 14 |
| Adelaide UVI | 14 | 13 | 12 | 8 | 5 | 3 | 4 | 5 | 7 | 10 | 12 | 15 |
| Sydney UVI | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 |
| Perth UVI | 14 | 14 | 11 | 9 | 6 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Jamestown | 15 | 14 | 12 | 9 | 6 | 4 | 4 | 6 | 8 | 11 | 13 | 16 |
| Brisbane UVI | 15 | 15 | 13 | 10 | 7 | 5 | 5 | 8 | 9 | 12 | 14 | 15 |