Last updated: July 2, 2025
In San Juan Yaee, Mexico, understanding the UV Index is crucial for safeguarding your skin against harmful ultraviolet rays. With its Cwb climate, the region experiences notable variations in sun exposure, making awareness essential for sunburn prevention and long-term skin health. The UV levels soar to a staggering 15 around midday, peaking at 13 at noon, highlighting the urgency of protective measures during peak hours. By staying informed about UV Index readings, you can enjoy the outdoors while minimizing risks associated with intense sunlight.
The UV Index throughout the day presents a fascinating journey of sunlight intensity, peaking dramatically between 12 PM and 2 PM. Starting the morning with a gentle UV Index of 1 at 7 AM, the sun gradually warms up, reaching 3 by 9 AM. However, it's the midday sun that truly asserts itself, soaring to a striking 15 at 1 PM, when sun safety is paramount. As the afternoon progresses, the index begins to decline, dropping to 9 by 4 PM and fading to a tranquil 1 by 7 PM. With such a pronounced peak, it's essential to remain vigilant during those hours of highest exposure—remember to wear sunscreen, seek shade, and stay hydrated!
| 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 | 9 | very high | 15 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 15 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variations, peaking in the summer months. January starts with a UV Index of 10 (very high), but by February, it rises sharply to 12 (extreme), and continues to escalate until it reaches its maximum in July at 15 (extreme). This elevated threat persists through August, dropping only slightly to 14 in September and back down to 12 in October. The high-risk months for UV exposure are February through September, where the UV Index consistently stays at 12 or above. Residents and visitors are strongly advised to take precautions during these periods, including wearing sunscreen, protective clothing, and limiting sun exposure to avoid skin damage, especially during peak hours when burn time can be as little as 10 minutes. As winter approaches, UV levels decrease, but it's still vital to maintain sun safety practices in November and December, where the UV Index is 10 and 9, respectively.
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 |
| 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 |
| San Juan Yaee | 10 | 12 | 14 | 14 | 14 | 14 | 15 | 13 | 14 | 12 | 10 | 9 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |