Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Rangiora, New Zealand, where the climate offers both beautiful days and notable UV exposure risks. With the ability to indicate potential sunburn and long-term skin damage, it's essential to monitor UV levels throughout the day. Typically peaking in the midday sun with values reaching up to 3, the UV Index in Rangiora emphasizes the need for protective measures even on seemingly mild days. By being aware of local UV levels, you can better safeguard your skin health and enjoy the sun responsibly while embracing Rangiora’s delightful climate.
The UV Index throughout the day reveals a gradual increase in sun intensity, peaking mid-afternoon. Starting at 0 at 07:00, the index rises to 1 by 08:00 and remains moderate at 1 for the following hour. As the sun ascends, the intensity reaches 2 by 10:00, climbing further to 3 at 11:00, sustaining this level until 14:00. After this peak, a gentle decline begins, with the index dropping to 2 at 15:00, and gradually easing back to 1 by 17:00, before retreating to 0 by 18:00. For anyone spending time outdoors, the late morning to early afternoon presents the highest UV exposure; thus, caution and sun protection are highly advisable during these hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 2 | low | 45 min |
| 11:00 | 3 | moderate | 30 min |
| 12:00 | 3 | moderate | 30 min |
| 13:00 | 3 | 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 |
Throughout the year, UV levels fluctuate significantly, with the highest risk months occurring from January to March and then again in November and December. During these months, the UV Index reaches extreme levels of 13, indicating a burn time of just 10 minutes, necessitating precautionary measures. As spring approaches, March brings a very high rating of 9, with a burn time of 15 minutes, while April and early fall months like September see a decrease to high levels with a UV Index of 6 (burn time 25 minutes). In the summer months of June and July, the index drops to low at 2, allowing for up to 45 minutes of exposure without significant risk. However, as August rolls in, it climbs back to moderate, reaching 4. Thus, it is imperative for visitors and residents to remain vigilant during the extreme and very high months, employing sun safety strategies like using sunscreen, wearing protective clothing, and seeking shade whenever necessary, particularly in the high-risk periods.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Christchurch UVI | 13 | 12 | 9 | 6 | 3 | 2 | 2 | 3 | 5 | 9 | 10 | 12 |
| Rangiora | 13 | 13 | 9 | 6 | 4 | 2 | 2 | 4 | 6 | 9 | 11 | 13 |
| 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 |