Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Santa Rosa (Santa Barbara), Mexico, where the sun shines brightly throughout the year. The UV levels can soar to a peak of 15 during the midday hours, emphasizing the importance of being aware of the potential risks associated with sun exposure, such as sunburn and long-term skin health issues. With a climate characterized by warm summers and mild winters, Santa Rosa experiences significant UV risk, especially from late morning to early afternoon. Stay informed about the UV Index to protect your skin and enjoy the beautiful sun-soaked days of Santa Rosa safely!
As the day unfolds, the UV Index begins to soar, starting at a low 0 by 7:00 AM. By 8:00 AM, it inches up to 1, signaling the gradual approach of stronger sunlight. The 9:00 AM hour sees a modest rise to 2, but it’s really by 10:00 AM that we experience a significant jump to 5, hinting at more intense UV exposure. The peak arrives around 1:00 PM, where the index reaches a striking 14, just before maxing out at 15 by 2:00 PM—the perfect time to seek shade or sunscreen! After this towering high, the figures begin to retreat, dropping to 10 at 4:00 PM, and winding down to 3 by the evening hours at 6:00 PM. As the sun sets, the UV index falls to 1 at 7:00 PM, allowing for a gentle end to the day’s sunbathing adventures. Remember—protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 15 | extreme | 10 min |
| 15:00 | 13 | extreme | 10 min |
| 16:00 | 10 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
The UV Index shows significant seasonal variations, with the highest values occurring from March to October, where it consistently remains in the extreme exposure category, particularly peaking at 15 in April, June, and the summer months. February and March also present critical periods, with UV Index values of 12 and 14 respectively. Notably, the high-risk months for UV exposure are March through October, where the potential for skin damage is at its highest, with a burn time of just 10 minutes during these months. Residents and visitors are strongly advised to take precautions such as applying sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours to minimize the risk of sunburn and long-term skin damage. In contrast, November and December see a slight reduction in UV levels, but the UV Index remains in the very high category, suggesting that vigilance is still necessary.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
| Iztapalapa UVI | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
| Santa Rosa (Santa Barbara) | 10 | 12 | 14 | 15 | 14 | 15 | 14 | 14 | 14 | 12 | 10 | 9 |
| Ecatepec de Morelos UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Mexico City UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |