Last updated: August 1, 2025
Understanding the UV Index in Tumby Bay, Australia, is crucial for maintaining skin health and preventing painful sunburn. As the sun’s rays can be particularly intense during the warmer months, being aware of the daily UV levels helps you take the necessary precautions. Tumby Bay, with its Csb climate zone, experiences a range of UV exposures throughout the day, peaking at midday when the UV Index reaches 4. This highlights the importance of sun safety measures, especially between 10 AM and 2 PM, to enjoy the beautiful outdoors while protecting your skin effectively.
As the sun rises, the UV Index starts at a minimal 1 by 07:00 and 08:00, making early outdoor activities safe. By 09:00, it gently ascends to 2, indicating a slight increase in solar exposure. The real action begins at 10:00 with a jump to 3, peaking at 12:00 with a UV Index of 4, when sun safety precautions become essential. After 13:00, the index gradually declines to 3 and then 2 by 14:00, suggesting a decrease in UV intensity. The afternoon wind-down sees the index taper off to 1 between 15:00 and 17:00, before dropping to 0 by evening, making it a perfect time to enjoy the outdoors without the worries of UV exposure.
| 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 | 5 | moderate | 30 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 seasonal UV changes indicate significant variations throughout the year, with the highest levels occurring in the winter months of December (UV Index 15) and January (UV Index 14), categorized as extreme with a burn time of just 10 minutes. February and March also fall into the extreme category, emphasizing the need for caution during these months. As spring progresses, the UV Index drops slightly, reaching a very high level in April (UV Index 8) and then moderating in the summer months, with May to August showing moderate levels (UV Index 5 and 4), allowing for 30 minutes of exposure before burning occurs. However, the UV Index increases again in September (UV Index 8) and October (UV Index 10), both classified as very high with a burn time of 15 minutes. November returns to an extreme category (UV Index 12), culminating in another peak before winter. Visitors and residents are strongly advised to take protective measures, especially from November through March, and during April and September, when UV exposure can be particularly harmful. It's essential to wear sunscreen, protective clothing, and sunglasses to safeguard against harmful UV radiation.
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 |
| Tumby Bay | 14 | 13 | 12 | 8 | 5 | 3 | 4 | 5 | 8 | 10 | 12 | 15 |
| Perth UVI | 14 | 14 | 11 | 9 | 6 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Brisbane UVI | 15 | 15 | 13 | 10 | 7 | 5 | 5 | 8 | 9 | 12 | 14 | 15 |