UV Index in Varna, Bulgaria

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Varna, Bulgaria, where sunny days can quickly lead to overexposure to harmful ultraviolet rays. With peak UV levels often soaring to 9 during the midday hours, awareness of these fluctuations is vital for effective sunburn prevention and protecting skin health. Varna’s Cfa climate brings warm, sunny weather, amplifying the risk of sun damage, particularly between 10 AM and 4 PM. By staying informed about the UV Index, you can enjoy Varna's beautiful beaches and outdoor attractions while keeping your skin safe!

Hourly UV Index in Varna

The UV Index for the day showcases a notable rise in intensity as the sun climbs higher in the sky. Starting at a low of 1 at 7:00 AM, the index gradually increases to a moderate level of 3 by 9:00 AM. However, from 10:00 AM onward, things heat up significantly, peaking at a scorching 9 from noon to 2:00 PM. As the afternoon progresses, the UV Index gradually dips back to a friendly 3 by 5:00 PM, then descends further to 1 by the time evening sets in. This pattern underscores the importance of sun protection during peak hours, especially between 11:00 AM and 2:00 PM, when UV levels are at their highest.

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
11:007high25 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 Varna

As the seasons change, so do the UV index levels, which can significantly affect sun exposure for visitors and residents. January and December show low UV levels (Index 2), allowing for 45 minutes of safe exposure. However, as spring progresses, March and April enter the high category (Index 6-7), reducing safe burn time to 25 minutes. The summer months of May through August are particularly risky, with very high UV levels (Index 8-9) and a burn time dropping to just 15 minutes. As autumn approaches, September's UV index decreases to high (Index 7), allowing for 25 minutes of exposure, followed by moderate levels in October and November (Index 3-4), where safe burn times extend to 30 minutes. Residents and visitors are advised to monitor the UV index closely, especially between May and August, and take appropriate sun protection measures, including wearing sunscreen, hats, and protective clothing during high-risk months.

Monthly Maximum UV Index for Varna, Bulgaria

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Varna. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec246799997532
Data source: Statistical UV Index data for Varna, 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 Varna UV Index with Other Bulgaria Cities

The table above highlights how UV exposure in Varna compares to other major locations across Bulgaria. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Varna's solar exposure compared to other cities in Bulgaria. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Ruse UVI246789997532
Varna246789997532
Burgas UVI246799997532
Plovdiv UVI2468910997632
Sofia UVI24779101097632