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London UV Index Today

Day Summary

The UV index in London, Canada Flag of Canada will reach a high of 7.1 today. This means a high level of sun exposure. See our tips below to stay safe!

Last checked: 2025-08-02

Hourly Forecast Chart

Today's Safety Tips

Be careful! The sun's rays are strong. Try to stay in the shade between 10 a.m. and 4 p.m. Wear a hat, sunglasses, and reapply SPF 30+ sunscreen every 2 hours.

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 UV Index Trend

See the UV index hour by hour for London. When the level is high, it's smart to find some shade.

Disclaimer

* The information on this page about the UV index in London is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.