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UV Index in London

Day Summary

Today's UV index in London, Canada Canada will be up to 7.3, indicating a high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.

Last checked: 2025-06-01

Forecast

Today's tips

With London's UV index reaching 7.3, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.

London's UV Index

The UV index in London, Canada, typically ranges from low in winter to moderate or high in summer, peaking around 6 to 7 during sunny days in June and July.

Weather Seasons

UV index

London experiences cold winters with snow, mild springs, warm summers, and cool autumns. The warmest months are July and August, while January is usually the coldest, often below freezing.

London's Climate

Compared to other Canadian cities, London has moderate weather, less harsh than northern areas. It is warmer than cities like Toronto in winter but cooler than southern US cities. Neighboring countries like the US often have higher summer UV levels.

Hourly Trend

See the UV index hour by hour for London, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.

Disclaimer

* This page's content about the UV index in London (Canada) 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.