London, Canada Climate by Month
London, Ontario, Canada
Warm summers and freezing winters, with rain spread through the year.
London has warm summers and freezing winters, with rain spread through the year. Afternoon highs range from 30°F (-1°C) in January to 81°F (27°C) in July, and January nights average 17°F (-8°C). It gets 39 in (998 mm) of rain a year, spread across the months. The air is humid, averaging 78% relative humidity.
- Warmest month
- 81°F(27°C)
- Average high, July
- Coldest nights
- 17°F(-8°C)
- Average low, January
- Rain per year
- 39 in(998 mm)
- No clear rainy season
- Humidity
- 78%
- Sunniest: July
Best and worst months in London
Best for weatherThe most comfortable weather comes in June, August and September, with highs around 76°F (25°C) and about 3.3 in (84 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 30°F (-1°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
London weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 30°F(-1°C) | 17°F(-8°C) | 3.2 in(82 mm) | 94% | 1.4 |
| FebFebruary | 32°F(0°C) | 17°F(-8°C) | 2.8 in(70 mm) | 89% | 2.3 |
| MarMarch | 41°F(5°C) | 26°F(-3°C) | 2.8 in(71 mm) | 77% | 3.4 |
| AprApril | 54°F(12°C) | 36°F(2°C) | 3.4 in(86 mm) | 68% | 4.4 |
| MayMay | 67°F(20°C) | 47°F(9°C) | 3.7 in(93 mm) | 69% | 5.3 |
| JunJuneBest | 77°F(25°C) | 57°F(14°C) | 3.5 in(89 mm) | 71% | 5.9 |
| JulJuly | 81°F(27°C) | 61°F(16°C) | 3.2 in(81 mm) | 69% | 5.9 |
| AugAugustBest | 80°F(27°C) | 60°F(15°C) | 3.0 in(76 mm) | 73% | 5.1 |
| SepSeptemberBest | 73°F(23°C) | 53°F(12°C) | 3.4 in(86 mm) | 76% | 4.1 |
| OctOctober | 60°F(15°C) | 43°F(6°C) | 3.6 in(92 mm) | 77% | 2.4 |
| NovNovember | 47°F(8°C) | 33°F(1°C) | 3.4 in(87 mm) | 84% | 1.5 |
| DecDecember | 35°F(2°C) | 24°F(-4°C) | 3.3 in(85 mm) | 90% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like London →- 🇨🇦BrantfordOntario, Canada · Pop. 105k99%matchSame summer highsSame winter lowsLondon vs Brantford →
- 🇨🇦TorontoOntario, Canada · Pop. 2.8M99%matchSame winter lowsSame summer highsLondon vs Toronto →
- 🇨🇦ChathamOntario, Canada · Pop. 44k99%matchSame summer highsSame winter lowsLondon vs Chatham →
- 🇨🇦BurlingtonOntario, Canada · Pop. 187k99%matchSame winter lowsSame sunshineLondon vs Burlington →
- 🇺🇸CheektowagaNew York, United States · Pop. 75k99%matchSame summer highsSame winter lowsLondon vs Cheektowaga →