Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of San Sebastián de la Gomera, where the sun shines brightly due to its Csa climate. Awareness of UV levels is essential not just for sunburn prevention but also for maintaining long-term skin health. The UV Index in this scenic locale can reach a peak of 11 around midday, signaling a high risk of harm from unprotected sun exposure. Given the region's typical UV exposure risks, being informed about the daily UV Index can help you safeguard your skin while enjoying the stunning landscapes that San Sebastián de la Gomera has to offer.
In the early hours of the day, the UV Index remains low, peaking at 1 by 08:00 and gradually climbing to 3 at 10:00. However, from 11:00 onwards, it soars dramatically, reaching its peak of 11 between 13:00 and 15:00, signaling the highest risk for sun exposure. As the afternoon progresses into the evening, the index slowly declines, dropping to 9 at 16:00 and further to 4 by 18:00. By 19:00, it settles at a mild 2, illustrating the need for sun protection during midday hours while reminding us to enjoy the sun safely throughout the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 8 | 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 experiences significant seasonal variation, peaking during the warmer months. From January (UV Index 5) to February (UV Index 7), conditions gradually worsen, signaling the approach of higher UV exposure. The months of March through September present the highest risk, with UV Index values reaching 12 in May and June, categorizing these months as extreme. Residents and visitors are advised to take extra precautions during these high-risk months, using sunscreen, wearing protective clothing, and seeking shade especially during peak sun hours. As the year progresses into October (UV Index 9) and November (UV Index 7), UV levels begin to decline, allowing for safer outdoor activities in the cooler months of December and January (UV Index 5). Always stay informed and protect your skin from harmful UV radiation!
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Barcelona UVI | 3 | 4 | 5 | 7 | 8 | 10 | 10 | 9 | 7 | 6 | 3 | 2 |
| Zaragoza UVI | 3 | 4 | 6 | 8 | 9 | 11 | 11 | 9 | 8 | 6 | 3 | 2 |
| Valencia UVI | 3 | 4 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 4 | 3 |
| Madrid UVI | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 9 | 8 | 6 | 4 | 3 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |
| San Sebastian de la Gomera | 5 | 7 | 9 | 11 | 12 | 12 | 11 | 11 | 11 | 9 | 7 | 5 |