Last updated: July 2, 2025
In Whangarei Heads, New Zealand, awareness of the UV Index is crucial for safeguarding your skin against harmful ultraviolet rays. Understanding UV levels can help you take proactive measures to prevent sunburn and protect your long-term skin health, especially in this picturesque coastal area, where the Cfb climate ensures moderate temperatures and significant sun exposure. With midday UV Index values peaking at 3, residents and visitors alike should remain vigilant to enjoy the outdoors safely while minimizing the risk of overexposure. Embrace the sun responsibly and keep your skin glowing healthily!
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 |
The UV Index exhibits significant seasonal variations, with the highest levels occurring from January to March, where values reach 14 classified as extreme, necessitating a burn time of only 10 minutes. November and December also present high risks with UV Index values of 12 and 14 respectively, continuing to emphasize precautions due to the extreme exposure category. As we transition into April, the UV Index decreases to 7 (high), allowing for a longer burn time of 25 minutes, while May through July remain moderate, with UV Index values ranging from 5 to 3 and burn times averaging 30 minutes. The onset of autumn sees a return to higher readings in September (UV Index 7, high) and October (UV Index 10, very high) before diminishing later in the year. Visitors and residents should take note of high-risk months, particularly those from January to March and November to December, and should ensure adequate sun protection measures are in place to avoid harmful UV exposure.
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 |
| 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 |
| Whangarei Heads | 14 | 14 | 11 | 7 | 5 | 3 | 3 | 5 | 7 | 10 | 12 | 14 |