UV Index in Saint Helier, Jersey

Last updated: May 3, 2025

Understanding the UV Index in Saint Helier, Jersey is essential for protecting your skin and maintaining overall health. With UV levels rising particularly around midday, being aware of the forecast helps prevent sunburn and minimizes long-term skin damage. Saint Helier's Cfb climate brings mild temperatures but can also lead to unexpected UV exposure during the sunny months. By staying informed and taking appropriate precautions, you can enjoy the beautiful Jersey coastline while keeping your skin safe and healthy.

Hourly UV Index in Saint Helier

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 Saint Helier

During the year, the UV Index exhibits notable seasonal variations, with high-risk months emerging from late spring through summer. May through August sees a significant increase in UV levels, peaking in June and July at a very high index of 9, where the recommended burn time is just 15 minutes. Conversely, the winter months of December and January present a low exposure risk with an index of 1 to 2 and burn times extending up to 45 minutes. Visitors and residents are advised to take extra precautions during the high and very high UV months, which include applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially between 10 AM and 4 PM when UV rays are strongest. Stay informed and protect your skin to enjoy the outdoors safely!

Monthly Maximum UV Index for Saint Helier, Jersey

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Saint Helier. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec234679986421
Data source: Statistical UV Index data for Saint Helier, 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 Saint Helier UV Index with Other Jersey Cities

The table above highlights how UV exposure in Saint Helier compares to other major locations across Jersey. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Saint Helier's solar exposure compared to other cities in Jersey. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Saint Helier234679986421
Le Hocq UVI234679986421