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UV Index in Cardiff, GB

UV index


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Today's UV index in Cardiff, United Kingdom United Kingdom will be up to 0.6, indicating low risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.


Today's tips

Today, the UV index suggests low sun danger (0-2) in Cardiff, reaching up to 0.6. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.

Cardiff Weather

Read more here about the climate and sun exposure in and around Cardiff.

UV Index in Cardiff

The UV index in Cardiff can vary throughout the year. In summer (June-August), it typically reaches moderate to high levels, ranging from 6 to 8, which indicates a moderate to high risk of harm from unprotected sun exposure. It's important to apply sunscreen, wear protective clothing, and seek shade during peak hours to minimize the risk of sunburn and skin damage.

Weather Seasons

UV index

Cardiff experiences four distinct weather seasons. In spring (March-May), temperatures gradually increase, averaging around 10-15 °C (50-59 °F). Summer (June-August) brings mild to warm weather, with temperatures averaging 15-25 °C (59-77 °F), occasionally reaching the high 20s (mid to high 80s °F). Autumn (September-November) sees temperatures dropping from around 14-20 °C (57-68 °F), with some rainfall. Winter (December-February) is relatively mild, with temperatures ranging from 2-8 °C (36-46 °F) and occasional frost.

Cardiff's Climate

Compared to other regions, Cardiff enjoys a relatively milder climate due to its coastal location. The average annual sunlight hours are around 1,450, which is slightly higher than the UK average. However, it is still important to take necessary sun protection measures, especially during the summer months when the sun's rays are stronger.

Annual Sun Radiation

The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Cardiff. It's designed to provide you with a better understanding of the yearly weather and sun exposure.


* This page's content about the UV index in Cardiff (United Kingdom) is for educational and informational purposes only. The developers and data providers are not liable for the accuracy, reliability, or availability of the information. The information is not a substitute for professional medical advice, and the developers and data providers are not medical professionals. Seek advice from a qualified health provider for any medical concerns, and do not disregard medical advice or delay seeking it based on the information provided on this site.