Last updated: July 2, 2025
Understanding the UV Index in San Juan y Martinez, Cuba, is essential for safeguarding skin health and preventing sunburn. The region’s tropical climate offers plenty of sunshine, but this also brings with it heightened UV exposure risks, particularly during the midday hours when the index peaks at 12. By staying informed about UV levels, residents and visitors can take proactive measures, such as applying sunscreen and seeking shade, to protect themselves from the harmful effects of excessive sun exposure. With UV indexes ranging from 1 in the early morning to a significant 12 around noon, awareness is key to enjoying the beautiful Cuban outdoors safely.
As the sun rises, the UV Index starts at 1 by 7:00 AM, indicating low risk for sun exposure. It gradually creeps up, reaching 2 by 9:00 AM, and begins to climb more steeply from 10:00 AM, peaking at a striking 12 between 1:00 PM and 2:00 PM. During this time, the risk level is high, so protective measures are essential. The Index decreases in the late afternoon, dropping to 5 by 5:00 PM and returning to a low 1 by 7:00 PM. It’s clear that midday is when the sun’s intensity is at its strongest, serving as an important reminder to stay safe and protected during those peak hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the levels of UV radiation. From January to December, the UV Index fluctuates, peaking at a high of 13 from April to June, categorizing these months as part of the extreme exposure category, where the burn time is as short as 10 minutes. Notably, February and March also present high risks with indices of 10 and 11, respectively. November and December, while having lower values at 8 and 7, still fall into the very high to high categories, cautioning residents and visitors. It's crucial for everyone to take protective measures during the high-risk months (February to October) by wearing sunscreen, protective clothing, and seeking shade to minimize exposure and prevent sunburn. Stay informed and safe by monitoring UV levels and adjusting outdoor activities accordingly.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Havana UVI | 7 | 10 | 11 | 12 | 12 | 13 | 12 | 12 | 12 | 10 | 8 | 7 |
| San Juan y Martinez | 7 | 10 | 11 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 8 | 7 |
| Camaguey UVI | 8 | 10 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 9 | 7 |
| Holguin UVI | 8 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 11 | 8 | 7 |
| Santiago de Cuba UVI | 9 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 9 | 8 |
| Guantanamo UVI | 9 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 9 | 8 |