UV Index in Banja Luka, Bosnia and Herzegovina

Last updated: June 2, 2025

Understanding the UV Index in Banja Luka, Bosnia and Herzegovina is crucial for protecting your skin and overall health. With peak levels reaching a high of 9 during midday, awareness of UV exposure is essential to prevent sunburn and long-term skin damage. The city's Cfb climate contributes to significant UV radiation during summer months, making it vital for residents and visitors alike to monitor these levels. By staying informed about the UV Index, you can enjoy the sunny days while safeguarding your skin.

Hourly UV Index in Banja Luka

The UV Index throughout the day presents a clear pattern of intensity, peaking at midday. Starting from a mild level of 1 at 07:00, the index rises steadily, reaching 2 by 08:00. The real surge occurs between 09:00 and 13:00, where it escalates from 4 to a striking 9—the highest point of the day. As the afternoon unfolds, the intensity slightly declines to 7 at 15:00, before tapering off to 5 at 16:00. The evening sees a further decrease, settling back to 2 by 18:00 and returning to 1 at 19:00. For those enjoying outdoor activities, it’s essential to take precautions, especially during the peak hours from 11:00 to 14:00 when the UV rays are most potent.

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
09:004moderate30 min
10:006high25 min
11:008very high15 min
12:009very high15 min
13:009very high15 min
14:009very high15 min
15:007high25 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Banja Luka

Throughout the year, the UV Index experiences significant seasonal changes, impacting sun exposure and burn times. January and December see low UV levels (Index 2), with burn times of 45 minutes, while February and November moderate (Index 3), reducing burn time to 30 minutes. As spring arrives, March (Index 5) indicates a moderate risk before transitioning to April's high level (Index 7) with a burn time of 25 minutes. The peak risk occurs in May and June, where the UV Index reaches 8 to 9, categorizing exposure as very high and necessitating protective measures within just 15 minutes of sun exposure. July continues this trend, while August sees a slight decrease to 8. The UV Index tapers off in September (Index 7), October (Index 5), and November (Index 3), before returning to low levels in December. Visitors and residents are advised to take extra precautions during May through August, including wearing protective clothing, applying sunscreen, and seeking shade during peak hours to minimize the risk of UV exposure.

Monthly Maximum UV Index for Banja Luka, Bosnia and Herzegovina

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Banja Luka. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Statistical UV Index data for Banja Luka, 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 Banja Luka UV Index with Other Bosnia and Herzegovina Cities

The table above highlights how UV exposure in Banja Luka compares to other major locations across Bosnia and Herzegovina. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Banja Luka's solar exposure compared to other cities in Bosnia and Herzegovina. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Banja Luka235789987532
Tuzla UVI246789987532
Zenica UVI24678101087532
Mostar UVI24679101097532
Sarajevo UVI34789101097532