UV Index in Mostar, Bosnia and Herzegovina

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of Mostar, Bosnia and Herzegovina, where the sun's rays can be particularly intense. With peak UV levels reaching up to 10 during midday, awareness of these fluctuations is essential for preventing sunburn and protecting your skin health. Mostar's temperate maritime climate brings delightful sunny days, but it also elevates the risk of UV exposure, making it vital to know when to seek shade or apply sunscreen. Stay informed and enjoy the beautiful vistas of Mostar while keeping your skin safe!

Hourly UV Index in Mostar

As the sun rises, the UV Index starts its ascent, with a gentle 1 at 07:00. By 08:00, it begins to climb, reaching 2, signaling a reminder to take care. The real intensity kicks in at 10:00, where the index peaks at 6, escalating to a scorching 9 by noon. The hottest moment arrives at 13:00, showcasing a dramatic 10—a level that demands serious sun protection. Although the UV level begins to drop after this peak, it remains notable; at 14:00, it settles at 9, then declines gently, hitting 3 by 17:00. As daylight fades towards the evening, it tapers off to 2 at 18:00 and finally returns to a safe 1 by 19:00. It's a vivid reminder of the sun's power throughout the day!

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
13:0010very 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 Mostar

Throughout the year, seasonal changes in UV exposure highlight significant fluctuations in the UV Index. The months of May through August are particularly high-risk, with UV Index values reaching a peak of 10, indicating very high exposure and a burn time of only 15 minutes. Visitors and residents should remain vigilant during these months, employing protective measures such as sunscreen and clothing, especially between 10 AM and 4 PM when UV exposure is strongest. March and April also show increased risk with UV Index values of 6 and 7 respectively. Conversely, January and December present lower risk levels, with UV Index values of 2 indicating low exposure and longer potential burn times of 45 minutes. It is essential to monitor UV levels year-round and adjust sun protection strategies accordingly to ensure safety.

Monthly Maximum UV Index for Mostar, Bosnia and Herzegovina

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Mostar. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Statistical UV Index data for Mostar, 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 Mostar UV Index with Other Bosnia and Herzegovina Cities

The table above highlights how UV exposure in Mostar 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.
Mostar's solar exposure compared to other cities in Bosnia and Herzegovina. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Banja Luka UVI235789987532
Tuzla UVI246789987532
Zenica UVI24678101087532
Mostar24679101097532
Sarajevo UVI34789101097532