Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Kalaheo, United States, where sunny days abound and UV exposure can be high. With the potential for serious skin damage such as sunburn and long-term health issues, knowing the UV levels helps you protect your skin and enjoy the outdoors safely. In Kalaheo, the climate typically brings intense midday sun, with UV Index values peaking at 13 between 12 PM and 1 PM. By staying informed about the UV Index, you can take proactive measures to shield yourself and your loved ones from harmful rays while fully enjoying the beautiful Hawaiian landscape.
The UV Index during the day reveals a notable peak in sun exposure. Starting at 07:00 with a gentle 1, it gradually climbs to 2 by 08:00. As the sun rises higher, the index surges dramatically, hitting 5 at 09:00, and reaching a striking 8 by 10:00. The intensity peaks at 12:00 with a scorching 13, remaining high until 13:00. After that, it starts to decline, returning to 11 at 14:00 and falling to 8 by 15:00. As the afternoon wanes, the index drops to 5 at 16:00, and finally settles back to 1 by 18:00 and 19:00. This data highlights the importance of sun safety measures during the midday hours when UV exposure is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences notable seasonal variations, with the highest levels occurring from March to September. During this peak period, particularly from May to August, the UV Index reaches an extreme level of 13, necessitating a burn time as short as 10 minutes. January and February also present significant risk, featuring very high UV Index values of 8 and 10, respectively. Visitors and residents should remain vigilant during these high-risk months by limiting sun exposure, wearing protective clothing, and applying sunscreen frequently. As the year progresses into October and November, while UV levels drop, caution is still advised due to remaining very high levels. December sees a slightly lower risk with a high exposure category, suggesting 25 minutes before burns occur. Prioritizing sun safety across all months is essential for protecting skin health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicago UVI | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| Brooklyn UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| New York City UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Kalaheo | 8 | 10 | 11 | 12 | 13 | 13 | 13 | 13 | 12 | 10 | 8 | 7 |