Last updated: June 2, 2025
In Riverton, New Zealand, staying aware of the UV Index is crucial for protecting your skin from the sun's harmful rays. Understanding UV levels is essential for preventing sunburn and promoting overall skin health, especially as exposure risks vary throughout the day. With a mild Cfb climate that often features sunny days, even a low UV Index can pose risks to your skin. Be proactive—know when to seek shade and apply sunscreen to enjoy all that Riverton has to offer while keeping your skin safe!
Throughout the day, the UV Index exhibits a distinct pattern, with the sun's intensity gradually increasing as the hours progress. From 07:00 to 08:00, the UV Index remains at a low level of 0, indicating minimal exposure risk. However, starting at 09:00, it slowly climbs to 1, maintaining this level until 16:00. This period, characterized by a sustained UV Index of 1, suggests that while the sun is visible, precautions like sunscreen and protective clothing are still advisable, especially during midday. As evening approaches, from 17:00 onward, the UV Index drops back to 0, signaling a return to safety from the sun's rays. It's a day that reminds us to enjoy the outdoors while staying sun-smart!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 0 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 1 | low | 45 min |
| 11:00 | 1 | low | 45 min |
| 12:00 | 1 | low | 45 min |
| 13:00 | 1 | low | 45 min |
| 14:00 | 1 | low | 45 min |
| 15:00 | 1 | low | 45 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 0 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal variation, with the highest values occurring during the winter and late fall months. January and December are particularly concerning, both having an index of 12 and classified as extreme, with a burn time of just 10 minutes. Meanwhile, February and November also present high risks, with indices of 11 and 9, respectively, demanding similar caution. As spring approaches, the UV Index decreases, peaking at 8 in March and October, categorized as very high with a burn time of 15 minutes. By summer, the risk diminishes, with June and July classified as low, allowing for longer exposure times of 45 minutes. However, caution should still be taken in August and September, as the index returns to moderate levels at 3 and 5. Visitors and residents are advised to prioritize sun safety, especially from November to March, by wearing protective clothing, applying sunscreen frequently, and seeking shade during peak hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Riverton | 12 | 11 | 8 | 5 | 3 | 2 | 2 | 3 | 5 | 8 | 9 | 12 |
| Christchurch UVI | 13 | 12 | 9 | 6 | 3 | 2 | 2 | 3 | 5 | 9 | 10 | 12 |
| Wellington UVI | 13 | 13 | 9 | 7 | 4 | 2 | 2 | 4 | 6 | 9 | 10 | 13 |
| Hamilton UVI | 14 | 14 | 10 | 7 | 4 | 3 | 3 | 5 | 7 | 10 | 11 | 13 |
| Manukau City UVI | 14 | 14 | 10 | 7 | 4 | 3 | 3 | 5 | 7 | 10 | 11 | 13 |
| Auckland UVI | 14 | 14 | 10 | 7 | 4 | 3 | 3 | 5 | 7 | 10 | 11 | 13 |