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UV Index in Belfast, GB

UV index


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Today's UV index in Belfast, United Kingdom United Kingdom will be up to 0.4, 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 Belfast, reaching up to 0.4. Remember sunglasses and SPF 30+ on sunny days, and be cautious around reflective surfaces like sand, water, and snow for increased UV exposure.

Belfast Weather

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

UV Index in Belfast

Belfast experiences moderate UV (Ultraviolet) index levels throughout the year. In the summer months of June, July, and August, when the weather is generally milder, the UV index ranges from 5 to 6, indicating a moderate risk of harm from unprotected sun exposure. It is important to take precautions like wearing sunscreen, sunglasses, and a hat to protect your skin from the sun's rays.

Weather Seasons

UV index

Belfast has a temperate maritime climate, which means its weather is influenced by the surrounding seas. The city experiences mild winters with average temperatures ranging from 2 °C (36 °F) to 8 °C (46 °F), while summers are cool to mild with temperatures averaging between 12 °C (54 °F) and 19 °C (66 °F). Rainfall is evenly spread throughout the year, so you can expect showers anytime, making waterproof clothing a necessity.

Belfast's Climate

Compared to other cities in its region, Belfast receives less sunlight due to its northern location. This reduced sun exposure means that the city has shorter daylight hours during winter and longer daylight hours through the summer months. Consequently, it is crucial to take advantage of the limited sunshine during winter by getting outdoors when possible and ensuring proper sun protection during the brighter summer days.

Annual Sun Radiation

The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Belfast. 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 Belfast (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.