UV Index in Ranua, Finland

Last updated: June 2, 2025

In Ranua, Finland, being mindful of the UV Index is crucial for protecting your skin and overall health. Understanding the levels of ultraviolet radiation can help you take necessary precautions against sunburn and long-term skin damage. Ranua, characterized by its Dfc climate, experiences unique UV exposure risks, particularly during the summer months when the index can climb to a level of 6 around midday. By staying informed about the UV Index, you can enjoy the beautiful Finnish summer while safeguarding your skin from harmful rays.

Hourly UV Index in Ranua

The UV Index rises steadily through the morning, starting at a mild 1 at 07:00, then climbing to 2 by 08:00. As the sun reaches its peak, it hits a maximum of 6 at both 13:00 and 14:00, signifying a high potential for harm from unprotected sun exposure. The intensity then begins to wane, dropping back to 5 by 15:00 and gradually descending to 2 by 19:00. It’s advisable to stay protected when the index reaches 5 or higher, especially during the midday hours when the sunlight is strongest. So, prepare for vibrant outdoor activities in the morning and evening, but take caution 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
10:004moderate30 min
11:005moderate30 min
12:005moderate30 min
13:006high25 min
14:006high25 min
15:005moderate30 min
16:004moderate30 min
17:003moderate30 min
18:002low45 min
19:002low45 min

Monthly UV Index Trends in Ranua

During the year, the UV Index varies significantly, indicating fluctuating levels of sun exposure risk. From January to February, the UV Index remains low at 1, with a burn time of 45 minutes, making it relatively safe for outdoor activities. As spring approaches, the index rises to 2 in March and reaches 3 in April, transitioning into the moderate category with a burn time of 30 minutes. The high-risk months occur in June and July, when the UV Index peaks at 6, necessitating cautious sun exposure, since the burn time is reduced to just 25 minutes. In August, the UV Index decreases slightly to 4, followed by a gradual decline to 3 in September and 2 in October. By November and December, the UV Index drops back to 1, again allowing for 45 minutes of safe exposure. Visitors and residents are advised to take greater precautions during the summer months and to use sunscreen, wear protective clothing, and seek shade, especially during peak hours.

Monthly Maximum UV Index for Ranua, Finland

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Ranua. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec112456643111
Data source: Statistical UV Index data for Ranua, 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 Ranua UV Index with Other Finland Cities

The table above highlights how UV exposure in Ranua 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.
Ranua's solar exposure compared to other cities in Finland. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Ranua112346643211
Tampere UVI113456653211
Vantaa UVI113457754211
Espoo UVI113457754211
Helsinki UVI113457754211
Turku UVI123457754211