UV Index in St Martin, Guernsey

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in St Martin, Guernsey, where the climate offers both delightful sunny days and potential skin risks. With peak UV levels reaching 7 during midday, being aware of these fluctuations helps in preventing sunburn and preserving skin health. As a coastal area in a temperate maritime climate, St Martin experiences UV exposure that can vary dramatically throughout the day. By regularly checking the UV Index, you can enjoy the outdoors safely while minimizing the impact of harmful rays on your skin. Stay informed and protect your skin—your future self will thank you!

Hourly UV Index in St Martin

As the sun rises, the UV Index begins its slow ascent, starting at a mere 1 at 7:00 AM. By 8:00 AM, it climbs to 2, and as the clock strikes 9:00 AM, it reaches 3. The true intensity of the sun emerges around 10:00 AM, with the index leaping to 5. Just prior to noon, at 11:00 AM, it peaks at 6, but the real highlight comes at 12:00 PM, when it hits an impressive 7. This high continues until 2:00 PM, showcasing a strong midday sun before gradually easing off. By 3:00 PM, the index dips to 6, and by 4:00 PM, it further descends to 4. As the day winds down, the UV levels drop significantly; by 6:00 PM, it returns to 2, and finally settles back to 1 by 7:00 PM. Remember to protect yourself during those peak hours! ☀️

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:003moderate30 min
10:005moderate30 min
11:006high25 min
12:007high25 min
13:007high25 min
14:007high25 min
15:006high25 min
16:004moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in St Martin

Throughout the year, the UV Index fluctuates significantly, impacting the risk of skin damage from sun exposure. High-risk months for UV exposure include April through August, with the index peaking at a very high level of 9 in June. During these months, the recommended burn time decreases to as low as 15 minutes, necessitating caution. In contrast, January, November, and December experience lower UV levels, categorized as low with burn times of up to 45 minutes. Visitors and residents are advised to take protective measures during high UV periods by wearing sunscreen, protective clothing, and sunglasses, especially in the peak summer months. Stay informed and proactive to minimize the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for St Martin, Guernsey

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in St Martin. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec234679875421
Data source: Statistical UV Index data for St Martin, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare St Martin UV Index with Other Guernsey Cities

The table above highlights how UV exposure in St Martin compares to other major locations across Guernsey. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
St Martin's solar exposure compared to other cities in Guernsey. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
St Martin234679876421
St Anne UVI234679876421
Sark UVI234679876421
Saint Peter Port UVI234679876421
Saint Saviour UVI234679876421