UV Index in Barcelona, Spain

Last updated: May 3, 2025

Understanding the UV Index in Barcelona, Spain, is crucial for anyone looking to enjoy the sun safely. As a vibrant city that basks in Mediterranean warmth, awareness of UV levels plays a vital role in preventing sunburns and promoting long-term skin health. With peak UV readings reaching as high as 9 in the afternoon, it's essential for both locals and visitors to stay informed about UV exposure risks. In Barcelona’s Cfb climate, where sunny days are plentiful, embracing sun safety practices can make all the difference in enjoying your outdoor adventures while safeguarding your skin.

Hourly UV Index in Barcelona

The UV Index starts off mild at 1 during the early hours, peaking at 9 between 1:00 PM and 2:00 PM—the sun's intensity is at its strongest during this period, urging everyone to take necessary precautions. As the sun begins to set, the index gradually declines, dropping back down to 1 by 7:00 PM. Notably, the hours from 10:00 AM to 3:00 PM are critical, where the UV Index climbs to 6 and above. For optimal safety during this sunny day, be sure to apply sunscreen and wear protective clothing during peak hours!

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
08:001low45 min
09:002low45 min
10:004moderate30 min
11:006high25 min
12:008very high15 min
13:009very high15 min
14:009very high15 min
15:008very high15 min
16:007high25 min
17:005moderate30 min
18:003moderate30 min
19:001low45 min

Monthly UV Index Trends in Barcelona

As the seasons change, so does the UV Index, which indicates the potential for skin damage due to sun exposure. From January to March, the UV levels are moderate, with an index ranging from 3 to 5 and a burn time of 30 minutes. However, as we transition into April and May, the index climbs sharply, peaking at 8 in May and marked as very high, reducing burn time to just 15 minutes. The months of June and July are particularly concerning, maintaining a UV Index of 10, signifying extreme exposure risk. Even August remains high at 9, before tapering off in September and October to a high of 7 and 6, respectively, where burn times increase back to 25 minutes. The winter months of November and December see much lower UV levels, with indices of 3 and 2 and extended burn times of 30 and 45 minutes. Residents and visitors should take extra precautions during the high-risk months of April to August, applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak hours to minimize sun damage.

Monthly Maximum UV Index for Barcelona, Spain

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Barcelona. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec34579101097632
Data source: Statistical UV Index data for Barcelona, 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 Barcelona UV Index with Other Spain Cities

The table above highlights how UV exposure in Barcelona compares to other major locations across Spain. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Barcelona's solar exposure compared to other cities in Spain. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Barcelona34578101097632
Zaragoza UVI34689111198632
Valencia UVI34689111098643
Madrid UVI346810111198643
Sevilla UVI3579101110109743