UV Index in Helsinki, Finland

Last updated: May 3, 2025

Understanding the UV Index is essential for residents and visitors in Helsinki, Finland, as it plays a crucial role in safeguarding skin health and preventing sunburn. As Helsinki experiences a Dfb climate with its unique daylight patterns, awareness of UV levels becomes particularly important during the sunnier months. By tracking the daily UV Index, which peaks at 5 around midday, you can take proactive measures to protect yourself and enjoy the outdoors responsibly. Remember, even on overcast days, UV rays can still impact your skin, making it vital to stay informed about exposure risks and sun safety practices.

Hourly UV Index in Helsinki

As the sun rises, the UV Index begins its climb, starting at a modest 1 at 7:00 AM. By 11:00 AM, it peaks at 4, signaling a steady increase in intensity. The midday sun reaches its zenith at 12:00 PM, with the UV Index hitting 5, a reminder to stay protected. The levels remain consistent at 5 from 12:00 PM to 2:00 PM, offering a perfect window for sun enthusiasts while also emphasizing the importance of sunscreen. As the afternoon wanes, the index gracefully decreases, settling at 3 by 4:00 PM and continuing to drop until it returns to 1 by 7:00 PM. This data highlights the dynamic nature of UV exposure throughout the day, urging us to enjoy the sunshine while remaining mindful of our skin protection.

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
09:002low45 min
10:003moderate30 min
11:004moderate30 min
12:005moderate30 min
13:005moderate30 min
14:005moderate30 min
15:004moderate30 min
16:003moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Helsinki

Throughout the year, UV exposure levels fluctuate significantly, with peak intensity occurring during the summer months. January through February feature low UV Index levels (1), allowing for safe outdoor activities with a burn time of 45 minutes. As spring approaches, March to May sees a gradual increase, reaching a moderate level (3-5) where exposure should be limited to 30 minutes to prevent skin damage. The high-risk months of June and July present the highest UV indices (7), necessitating heightened precautions and limiting direct sun exposure to 25 minutes. In late summer and fall, August to September sees a moderate decrease, while October through December return to low levels, similar to the start of the year, with a burn time of 45 minutes. Visitors and residents are advised to wear sunscreen, protective clothing, and seek shade, particularly during the high UV months to ensure skin safety and health.

Monthly Maximum UV Index for Helsinki, Finland

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Helsinki. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Statistical UV Index data for Helsinki, 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 Helsinki UV Index with Other Finland Cities

The table above highlights how UV exposure in Helsinki compares to other major locations across Finland. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Helsinki's solar exposure compared to other cities in Finland. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Tampere UVI113456653211
Helsinki113457754211
Vantaa UVI113457754211
Espoo UVI113457754211
Turku UVI123457754211