UV Index in Sigtuna, Sweden

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Sigtuna, Sweden, as it directly impacts health and wellness during sunny days. With a climate classified as Dfb, Sigtuna experiences varying UV levels throughout the day, often peaking between 11:00 AM and 1:00 PM. Being aware of these levels is essential for preventing sunburn and safeguarding skin health, especially during the summer months when ultraviolet radiation can pose significant risks. From mild exposure to harmful rays, understanding the UV Index allows you to enjoy the beautiful outdoors while taking necessary precautions to protect yourself and your loved ones.

Hourly UV Index in Sigtuna

The UV Index rises steadily throughout the morning, starting at a mild 1 at 07:00 and reaching a peak of 7 by 13:00. During the midday hours, the index remains robust at 6, indicating the need for sun protection. As the afternoon progresses, the UV intensity gradually diminishes, dropping to 5 at 15:00 and further to 2 by 18:00, before settling back to 1 as the sun sets at 19:00. It's a day that emphasizes the importance of staying vigilant against UV exposure, particularly during the peak hours of 11:00 to 14:00.

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
12:006high25 min
13:007high25 min
14:006high25 min
15:005moderate30 min
16:004moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Sigtuna

The UV Index experiences notable seasonal changes, peaking during the summer months. From January to February, UV levels remain low (Index 1-2), allowing for a safe burn time of 45 minutes. As spring approaches in March, the index rises to 3, indicating a moderate exposure risk with a reduced burn time of 30 minutes, which continues into April and May. By June and July, UV levels escalate to 7, categorized as high, and the burn time decreases to just 25 minutes, marking this as a high-risk period for sun exposure. The UV Index begins to decline in August (Index 5) and remains moderate until September (Index 4), before returning to low levels in October, November, and December (Index 1-2, with burn times of 45 minutes). Consequently, residents and visitors are advised to take extra precautions during the summer months, particularly from June to July, by seeking shade, wearing protective clothing, and applying sunscreen to prevent sunburn and skin damage.

Monthly Maximum UV Index for Sigtuna, Sweden

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Sigtuna. 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 Sigtuna, 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 Sigtuna UV Index with Other Sweden Cities

The table above highlights how UV exposure in Sigtuna 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.
Sigtuna's solar exposure compared to other cities in Sweden. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Sollentuna UVI123457754211
Sigtuna123457754211
Uppsala UVI123457754211
Stockholm UVI123457754211
Goeteborg UVI123567765211
Malmoe UVI123567765311