Weather Guide

London, Ontario, Canada Average Monthly Weather

Weather score34Poor annual avg

Best months: July, August, June

Across the year, average daytime temperatures are around 12°C, sunshine averages 5.1h per day, and rainfall totals about 963mm. Sea temperatures average 11°C across the year.

London, Ontario, Canada, Canada travel weather guide
Photo by pemond on Pixabay

Annual weather

Annual averages

Temp

12°C

Rain

963mm

Annual total

Sun

5.1h

Sea

11°C

Weather score

34

Poor avg

Seasonal climate calendar

Trip feel

Cool

Average highs are around 7°C, so pack for cooler days.

Showers

Rainfall averages 92mm, so some wet days are possible.

Limited sun

Sunshine averages 2.4h per day, so this is not one of the brighter months.

Cool sea

Sea temperatures average 11°C, so the water can feel cool.

Map

Weather map

Compare London, Ontario, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.

Temperature

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November7°C average high

November is on the cooler side of London's year, useful if you prefer less intense daytime heat.

Warmest monthsJune to September

This stretch sets the upper range for average daytime heat.

November92mm average rain

November is wetter than London's yearly average, so flexible plans matter more.

Driest monthsJanuary to July and September to October

This is the drier part of the year, when outdoor plans usually need less weather flexibility.

November2.4 hours average sun

November is one of London's cloudier months, so sunshine-led plans are less reliable.

Brightest monthsMay to August

This stretch has the strongest sunshine in the monthly averages.

Sea temperature

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November11°C average sea

November is close to London's yearly sea-temperature average, so swimming comfort is fairly typical.

Warmest seaJuly to September

Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.

Weather score

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November17 weather score

November is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.

Best weather monthsJuly to August

These months have the strongest weather score in the monthly averages.

Hotels in London, Ontario, Canada