Waterloo, Canada Climate by Month
Waterloo, Ontario, Canada
Warm summers and freezing winters, with rain spread through the year.
The climate in Waterloo is one of warm summers and freezing winters, with rain spread through the year. Afternoon highs range from 27°F (-3°C) in January to 79°F (26°C) in July, and February nights average 14°F (-10°C). About 38 in (955 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 81% relative humidity.
- Warmest month
- 79°F(26°C)
- Average high, July
- Coldest nights
- 14°F(-10°C)
- Average low, February
- Rain per year
- 38 in(955 mm)
- No clear rainy season
- Humidity
- 81%
- Sunniest: July
Best and worst months in Waterloo
Best for weatherJune and August are the best time for weather in Waterloo: highs near 76°F (25°C) and about 3.3 in (83 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 27°F (-3°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)
Waterloo weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 27°F(-3°C) | 14°F(-10°C) | 2.8 in(72 mm) | 100% | 1.4 |
| FebFebruary | 29°F(-2°C) | 14°F(-10°C) | 2.5 in(63 mm) | 100% | 2.4 |
| MarMarch | 38°F(3°C) | 23°F(-5°C) | 2.4 in(60 mm) | 87% | 3.4 |
| AprApril | 51°F(11°C) | 33°F(1°C) | 3.3 in(83 mm) | 66% | 4.4 |
| MayMay | 65°F(18°C) | 45°F(7°C) | 3.8 in(96 mm) | 68% | 5.3 |
| JunJuneBest | 75°F(24°C) | 55°F(13°C) | 3.3 in(84 mm) | 72% | 5.9 |
| JulJuly | 79°F(26°C) | 59°F(15°C) | 3.7 in(95 mm) | 74% | 5.9 |
| AugAugustBest | 78°F(26°C) | 57°F(14°C) | 3.2 in(82 mm) | 74% | 5.1 |
| SepSeptember | 72°F(22°C) | 51°F(11°C) | 3.1 in(80 mm) | 75% | 4.0 |
| OctOctober | 58°F(14°C) | 41°F(5°C) | 3.4 in(87 mm) | 76% | 2.4 |
| NovNovember | 45°F(7°C) | 31°F(0°C) | 3.3 in(84 mm) | 78% | 1.4 |
| DecDecember | 33°F(1°C) | 22°F(-5°C) | 2.7 in(69 mm) | 98% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
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