UV Index in Onsala, Sweden

Last updated: July 2, 2025

In Onsala, Sweden, awareness of the UV Index is crucial for protecting your skin and maintaining health under the sun. Understanding UV levels helps in taking preventative measures against sunburn and long-term skin damage, especially during the sunnier months when the index peaks at 6 around noon. With a Cfb climate, Onsala experiences varying UV exposure, making it essential to remain vigilant. By keeping an eye on the UV Index, residents can enjoy outdoor activities while safeguarding their skin’s health.

Hourly UV Index in Onsala

The UV Index throughout the day presents a clear peak in intensity, rising steadily from a gentle 1 at 07:00 to an assertive maximum of 6 between 12:00 and 14:00. This midday surge emphasizes the importance of sun protection, as the index then gracefully descends back to 1 by 19:00. From 08:00 to 11:00, values increase moderately, showcasing an inviting morning glow, while midday hours certainly warrant caution as the sun reaches its zenith. After 15:00, a gradual decline signals a retreat of UV intensity, allowing a more relaxed late afternoon. Armed with this timely information, outdoor enthusiasts can plan their activities with sun safety in mind!

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
10:004moderate30 min
11:005moderate30 min
12:006high25 min
13:006high25 min
14:006high25 min
15:005moderate30 min
16:004moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Onsala

Throughout the year, the UV Index experiences notable seasonal changes, peaking from late spring to summer. High-risk months for UV exposure are May through August, with the UV Index reaching as high as 7 during June and July, necessitating increased caution for both visitors and residents. In these months, the burn time decreases significantly to just 25 minutes, indicating the need for protective measures such as sunscreen and clothing. As the seasons transition into fall and winter, UV levels drop, with January, February, October, November, and December classified as low-risk months, allowing for longer exposure times of 45 minutes without significant risk. Overall, it is crucial for everyone to be aware of these fluctuations and to take appropriate precautions, particularly during the higher risk months.

Monthly Maximum UV Index for Onsala, Sweden

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Onsala. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec123567665211
Data source: Statistical UV Index data for Onsala, 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 Onsala UV Index with Other Sweden Cities

The table above highlights how UV exposure in Onsala compares to other major locations across Sweden. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Onsala's solar exposure compared to other cities in Sweden. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sollentuna UVI123457754211
Uppsala UVI123457754211
Stockholm UVI123457754211
Onsala123567765211
Goeteborg UVI123567765211
Malmoe UVI123567765311