Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Monterey, as it helps protect against harmful overexposure to the sun. With typically mild temperatures and coastal conditions in this Csb climate zone, Monterey can still see significant UV levels, especially between 11 AM and 2 PM, when the index reaches as high as 11. Being aware of these daily UV fluctuations not only aids in preventing sunburn but also plays a vital role in maintaining long-term skin health. By tracking the UV Index, you can enjoy the beautiful California coast while safeguarding your skin from potential damage!
As the sun rises, the UV Index begins at a mild 1 at 07:00, gradually escalating throughout the morning. By 10:00, it peaks at a robust 6, and then skyrockets to its maximum of 11 by 13:00—a time when protective measures become essential. The intensity starts to wane in the afternoon, dropping to 8 at 15:00, and further retreating to a gentle 1 by evening. It's a classic case of the sun's power, reminding us to stay vigilant and shield ourselves during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so does the UV Index, which measures the strength of ultraviolet radiation reaching the Earth's surface. From January to February, the UV Index is moderate at 4-5, with a burn time of about 30 minutes. However, by March, it escalates to 8 (very high), and remains at 9 in April. The peak risk occurs during the summer months of May through August, where the UV Index reaches a concerning 11 (extreme) with a burn time of just 10 minutes. In September, the risk slightly diminishes to 9, then to 7 in October, and further down to moderate levels of 5 in November and 3 in December. Residents and visitors should be particularly cautious during the high-risk months of May to August, ensuring to use sunscreen, wear protective clothing, and minimize sun exposure during peak hours to prevent skin damage.
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 |
| Monterey | 4 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 9 | 7 | 5 | 3 |
| 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 |