Ajax Climate by Month
Ajax, Ontario, Canada
Warm summers and freezing winters, with rain spread through the year.
The climate in Ajax is one of warm summers and freezing winters, with rain spread through the year. Expect highs of 79°F (26°C) in July and 30°F (-1°C) in January, with the coldest nights (January) near 16°F (-9°C). It gets 34 in (876 mm) of rain a year, spread across the months. The air is humid, averaging 80% relative humidity.
- Warmest month
- 79°F(26°C)
- Average high, July
- Coldest nights
- 16°F(-9°C)
- Average low, January
- Rain per year
- 34 in(876 mm)
- No clear rainy season
- Humidity
- 80%
- Sunniest: June
Best and worst months in Ajax
Best for weatherJune to August are the best time for weather in Ajax: highs near 77°F (25°C) and about 3.1 in (78 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is 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)
Ajax weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 30°F(-1°C) | 16°F(-9°C) | 2.2 in(56 mm) | 94% | 1.4 |
| FebFebruary | 32°F(0°C) | 18°F(-8°C) | 2.4 in(60 mm) | 88% | 2.2 |
| MarMarch | 40°F(4°C) | 26°F(-3°C) | 2.1 in(53 mm) | 79% | 3.4 |
| AprApril | 52°F(11°C) | 36°F(2°C) | 3.3 in(83 mm) | 72% | 4.3 |
| MayMay | 64°F(18°C) | 46°F(8°C) | 3.2 in(82 mm) | 67% | 5.5 |
| JunJuneBest | 74°F(23°C) | 56°F(13°C) | 3.2 in(82 mm) | 77% | 5.9 |
| JulJulyBest | 79°F(26°C) | 61°F(16°C) | 2.8 in(70 mm) | 72% | 5.8 |
| AugAugustBest | 78°F(25°C) | 60°F(16°C) | 3.3 in(83 mm) | 75% | 5.2 |
| SepSeptember | 71°F(21°C) | 53°F(12°C) | 3.2 in(81 mm) | 79% | 4.0 |
| OctOctober | 58°F(14°C) | 42°F(6°C) | 3.1 in(80 mm) | 82% | 2.3 |
| NovNovember | 46°F(8°C) | 33°F(1°C) | 3.1 in(80 mm) | 86% | 1.4 |
| DecDecember | 35°F(2°C) | 24°F(-5°C) | 2.6 in(66 mm) | 91% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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