London UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index7.8
- Avg Clouds9%
- Max Temp25.5 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in London, Canada 
will reach a high of 7.8 today. This means a high level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-22
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
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.
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