UV Index in Bristol, United Kingdom

Last updated: June 2, 2025

Understanding the UV Index in Bristol, United Kingdom, is crucial for everyone who enjoys the outdoors. With the potential for harmful sun exposure, being aware of UV levels can help you take essential precautions against sunburn and safeguard your skin health. Bristol experiences a temperate maritime climate, leading to varying UV exposure throughout the year, with peak levels reaching as high as 8 during midday hours in the summer. By staying informed about the UV Index, you can better protect yourself and enjoy the beautiful Bristolian scenery without compromise.

Hourly UV Index in Bristol

Starting the day with a gentle UV Index of 1 at 7:00 AM, the sun gradually intensifies, reaching 2 by 8:00 AM. By 9:00 AM, the index climbs to 4, marking the beginning of a more active sun exposure period. The peak arrives at 12:00 PM, where the UV Index hits a robust 8, indicating that it's time to seek shade and lather on the sunscreen. Throughout the afternoon, the levels maintain a high of 8 until 2:00 PM, before gently tapering off to 7 by 3:00 PM and gradually declining to 5 by 4:00 PM, and further down to 3 by 5:00 PM. As the day winds down, the index falls to 2 at 6:00 PM and finally settles back to 1 by 7:00 PM, signaling a safe return to outdoor activities as the sun sets. Stay sun-smart and enjoy your 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
10:005moderate30 min
11:007high25 min
12:008very high15 min
13:008very high15 min
14:008very high15 min
15:007high25 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Bristol

Throughout the year, UV exposure varies significantly, with notable increases during the spring and summer months. From January to February, the UV Index remains low (1-2), allowing for safer outdoor activities with a burn time of 45 minutes. As we progress into March and April, the levels rise to a moderate range (4-5), reducing burn time to 30 minutes. The high-risk months of May through August see a dramatic increase, with UV Index values reaching 7-8 (high to very high), which significantly shortens burn time to 15-25 minutes. Finally, from September to October, the risk decreases as the UV Index drops to moderate levels (4-6), returning to safer exposure times. Visitors and residents are advised to take precautions during high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours, to minimize the risk of skin damage.

Monthly Maximum UV Index for Bristol, United Kingdom

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Bristol. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec224678875421
Data source: Statistical UV Index data for Bristol, 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 Bristol UV Index with Other United Kingdom Cities

The table above highlights how UV exposure in Bristol compares to other major locations across United Kingdom. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Bristol's solar exposure compared to other cities in United Kingdom. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Liverpool UVI123578875321
Sheffield UVI124578875421
Birmingham UVI124578876421
London UVI124578876421
Bristol124578876421