UV Index in Boulogne-sur-Mer, France

Last updated: May 3, 2025

Understanding the UV Index in Boulogne-sur-Mer is crucial for anyone looking to enjoy the sun safely in this beautiful coastal town. With a climate zone (Cfb) that offers moderate temperatures and plenty of sunny days, awareness of UV levels can help prevent sunburn and protect your skin health. The UV Index varies throughout the day, peaking at 7 between 1 PM and 3 PM, indicating a higher risk of harm from the sun's rays. Being informed about these levels not only enhances your outdoor experience but also safeguards your long-term well-being while enjoying the vibrant beach life that Boulogne-sur-Mer has to offer.

Hourly UV Index in Boulogne-sur-Mer

As the sun climbs higher in the sky, the UV Index begins to surge, peaking at 7 between 13:00 and 15:00. Starting the day at a mild 1 at 07:00, the index gradually rises, hitting 6 by 12:00 and reaching its zenith at 13:00. For those venturing outdoors, this is the time to take precautions, as exposure levels can lead to skin damage. The afternoon sees a slight decline, with the index dropping back to 5 at 16:00 and tapering down to 1 by sunset at 19:00. It’s essential to stay vigilant and protect your skin 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
08:001low45 min
09:002low45 min
10:003moderate30 min
11:005moderate30 min
12:006high25 min
13:007high25 min
14:007high25 min
15:007high25 min
16:005moderate30 min
17:004moderate30 min
18:003moderate30 min
19:001low45 min

Monthly UV Index Trends in Boulogne-sur-Mer

The seasonal UV changes throughout the year reveal notable fluctuations in sun exposure risk. January and February present the lowest UV Index values (2), classified as low exposure, with a burn time of 45 minutes. As spring approaches, March and April see an increase to moderate levels (4 and 5), shortening burn time to 30 minutes. The risk peaks during May through July, with high (7) to very high (8) UV Index levels, leading to significantly reduced burn times of just 15 to 25 minutes. August starts to decline slightly to a high level (7), while September and October return to moderate ratings. The year wraps up with November and December falling back to low UV levels (2 and 1), allowing for longer burn times once more. Visitors and residents should particularly be cautious from May through July, taking proactive measures such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours to minimize the risk of UV-related harm.

Monthly Maximum UV Index for Boulogne-sur-Mer, France

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Boulogne-sur-Mer. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec224678875421
Data source: Statistical UV Index data for Boulogne-sur-Mer, 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 Boulogne-sur-Mer UV Index with Other France Cities

The table above highlights how UV exposure in Boulogne-sur-Mer compares to other major locations across France. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Boulogne-sur-Mer's solar exposure compared to other cities in France. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Boulogne-sur-Mer224578875421
Paris UVI235689886421
Lyon UVI2356810986532
Nice UVI2467810987532
Marseille UVI2457910987532
Toulouse UVI24679101097532