Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of San Juan Bautista, as it plays a vital role in sunburn prevention and maintaining skin health. With its Csb climate, the region experiences varied UV exposure throughout the day, peaking at a high of 11 between noon and 2 PM. This highlights the importance of being mindful of UV levels to protect yourself from harmful rays. By staying informed, you can enjoy the beautiful California sun while safeguarding your skin from the dangers of overexposure.
The UV Index paints a vivid picture of sun intensity throughout the day. Starting off at a low 1 at 7:00 AM, the sun begins to rise, prompting a gradual increase as it climbs higher in the sky. By 9:00 AM, the index reaches 4, indicating moderate exposure. The intensity peaks sharply at 12:00 PM with a notable 10 and hits its zenith at 1:00 PM, boasting an impressive 11. As the afternoon wears on, this extreme UV exposure begins to taper off, dropping to 9 by 3:00 PM and then descending further to 2 by 6:00 PM. Finally, as twilight approaches, the index falls back to a gentle 1 by 7:00 PM. It’s a vivid reminder of the sun’s power, urging us to take precautions during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | 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 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, with the highest risk occurring during the late spring and summer months. March marks the start of increased UV intensity, reaching 8, categorizing it as very high, while April sees a further rise to 9. The peak UV index of 11, indicating an extreme exposure category, occurs from May to July, with the shortest burn time of just 10 minutes. As summer wanes, August and September still reflect high UV levels of 10 and 9, respectively. In contrast, January, November, and December are characterized by lower UV indices of 4, 5, and 3, which fall into the moderate category, allowing for longer safe exposure times of 30 minutes and 25 minutes in October. Visitors and residents are advised to take extra precautions, particularly from March through September when UV levels are at their most hazardous, including wearing sunscreen, protective clothing, and seeking shade during peak hours.
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 |
| San Juan Bautista | 4 | 5 | 8 | 9 | 11 | 11 | 11 | 10 | 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 |