Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of San Ramon, Mexico, where the sun's strength can lead to significant skin health risks. With average UV levels peaking at 14 during midday hours, awareness of these fluctuations can help you prevent painful sunburns and long-term skin damage. In this region characterized by an Af climate, intense sunlight is a common part of daily life, making it essential to monitor UV exposure carefully. Whether you're enjoying outdoor activities or simply soaking up the sun, knowing the UV Index can help you protect your skin and enjoy your time in the sun safely.
The UV Index data reveals a dynamic shift in sun intensity throughout the day. Early morning hours from 07:00 to 09:00 see a mild index, peaking at 3 by 09:00. However, the sun's strength escalates sharply as we approach midday, with the index skyrocketing to 12 at 12:00 and reaching its zenith at 14:00 with a striking 14. As the afternoon progresses, a gradual decline begins, dropping to 10 by 15:00, and tapering down as evening approaches. By 19:00, the UV Index returns to a gentle 1, reminiscent of the early morning's cool embrace. It's a clear reminder to stay protected during peak hours, especially between 11:00 and 14:00, when the sun poses its strongest rays.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | 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 levels display significant seasonal changes, with the highest exposures occurring during the spring and summer months. From February to October, the UV Index consistently reaches extreme levels of 11 to 14, indicating a burn time of just 10 minutes for unprotected skin. March to August are particularly high-risk months, where the potential for skin damage is greatest. Conversely, the UV Index dips in January, November, and December to 9 and below, categorizing exposure as very high but with longer burn times of up to 15 minutes. Visitors and residents should take precautionary measures during peak months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during midday hours to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Ramon | 9 | 11 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 12 | 9 | 8 |
| 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 |
| 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 |