Climate Insights for Ajax

Downtown, Durham Region, Greater Toronto, Canada

Hottest
August
23°C peak74°F peak
Coldest
January
-4°C low24°F low
Wettest
April
111 mm rain4.4 in rain
Best to Visit
June, July, August
Mild temps & low rain

Climate Overview

The climate in Ajax is cool. The average annual temperature is 9°C and approximately 1,004 mm of precipitation falls per year. Ajax receives a notable amount of rainfall throughout the year, including during its driest month. Ajax is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to -4°C. Snowfall occurs from January to December, with around 139cm accumulating over the season.The climate in Ajax is cool. The average annual temperature is 48°F and approximately 39.5 in of precipitation falls per year. Ajax receives a notable amount of rainfall throughout the year, including during its driest month. Ajax is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 24°F. Snowfall occurs from January to December, with around 55in accumulating over the season.

Temperature

-10°0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 0°Average: -2°Min: -4°FebMax: 1°Average: -2°Min: -4°MarMax: 4°Average: 1°Min: -1°AprMax: 7°Average: 5°Min: 3°MayMax: 12°Average: 10°Min: 8°JunMax: 18°Average: 16°Min: 14°JulMax: 23°Average: 21°Min: 19°AugMax: 23°Average: 21°Min: 20°SepMax: 20°Average: 18°Min: 17°OctMax: 15°Average: 13°Min: 11°NovMax: 8°Average: 5°Min: 4°DecMax: 3°Average: 1°Min: -1°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 33°FAverage: 28°FMin: 24°FFebMax: 34°FAverage: 29°FMin: 25°FMarMax: 39°FAverage: 34°FMin: 31°FAprMax: 45°FAverage: 41°FMin: 38°FMayMax: 54°FAverage: 50°FMin: 47°FJunMax: 65°FAverage: 61°FMin: 58°FJulMax: 74°FAverage: 70°FMin: 67°FAugMax: 74°FAverage: 71°FMin: 67°FSepMax: 69°FAverage: 65°FMin: 62°FOctMax: 58°FAverage: 55°FMin: 51°FNovMax: 46°FAverage: 42°FMin: 39°FDecMax: 37°FAverage: 33°FMin: 30°F
Max
Average
Min

Temperatures in Ajax vary considerably across the year, with a 27°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 23°C with a mean of 21°C. The coldest month is January, when overnight lows fall to -4°C and the daily average is -2°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.Temperatures in Ajax vary considerably across the year, with a 50°F difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 74°F with a mean of 71°F. The coldest month is January, when overnight lows fall to 24°F and the daily average is 28°F. Daily temperature variation is modest, with an average difference of 7°F between highs and lows. The sharpest temperature change occurs between October and November, with a 13°F shift in average temperatures.

Precipitation

0mm25mm50mm75mm100mm125mm150mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 89mmSnow: 33mmFebPrecipitation: 80mmSnow: 40mmMarPrecipitation: 94mmSnow: 17mmAprPrecipitation: 111mmSnow: 7mmMayPrecipitation: 83mmSnow: 0mmJunPrecipitation: 70mmSnow: 0mmJulPrecipitation: 71mmSnow: 0mmAugPrecipitation: 68mmSnow: 0mmSepPrecipitation: 62mmSnow: 0mmOctPrecipitation: 94mmSnow: 0mmNovPrecipitation: 80mmSnow: 9mmDecPrecipitation: 101mmSnow: 33mm
Precipitation
Snow
0in2in4in6in8in10in12in14in16inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 3.5inSnow (in): 13inFebPrecipitation: 3.2inSnow (in): 16inMarPrecipitation: 3.7inSnow (in): 7inAprPrecipitation: 4.4inSnow (in): 3inMayPrecipitation: 3.3inSnow (in): 0inJunPrecipitation: 2.7inSnow (in): 0inJulPrecipitation: 2.8inSnow (in): 0inAugPrecipitation: 2.7inSnow (in): 0inSepPrecipitation: 2.4inSnow (in): 0inOctPrecipitation: 3.7inSnow (in): 0inNovPrecipitation: 3.2inSnow (in): 4inDecPrecipitation: 4inSnow (in): 13in
Precipitation
Snow (in)

Ajax is a moderately rainy area, receiving approximately 1,004 mm of precipitation annually, which averages out to around 84 mm per month. The wettest month is April, averaging 111 mm of rainfall. December and March also tend to see above-average precipitation. The driest month is September, with just 62 mm. That's 49 mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 139cm accumulating over the season. February typically sees the most snow at around 40cm.Ajax is a moderately rainy area, receiving approximately 39.5 in of precipitation annually, which averages out to around 3.3 in per month. The wettest month is April, averaging 4.4 in of rainfall. December and March also tend to see above-average precipitation. The driest month is September, with just 2.4 in. That's 1.9 in less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 55in accumulating over the season. February typically sees the most snow at around 16in.

Wind

0km/h5km/h10km/h15km/h20km/h25km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 24km/hFebWind Speed: 24km/hMarWind Speed: 21km/hAprWind Speed: 20km/hMayWind Speed: 15km/hJunWind Speed: 16km/hJulWind Speed: 14km/hAugWind Speed: 15km/hSepWind Speed: 16km/hOctWind Speed: 20km/hNovWind Speed: 22km/hDecWind Speed: 24km/h
Wind Speed
0mph5mph10mph15mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 15mphFebWind Speed: 15mphMarWind Speed: 13mphAprWind Speed: 12mphMayWind Speed: 10mphJunWind Speed: 10mphJulWind Speed: 9mphAugWind Speed: 9mphSepWind Speed: 10mphOctWind Speed: 13mphNovWind Speed: 14mphDecWind Speed: 15mph
Wind Speed

Ajax is mildly breezy, with an average annual wind speed of 19km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 24km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 24km/h in winter, 19km/h in spring, 15km/h in summer, 20km/h in autumn.Ajax is very windy, with an average annual wind speed of 12mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 15mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in July, with average winds dropping to 9mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6mph gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 15mph in winter, 12mph in spring, 9mph in summer, 12mph in autumn.

Best Time to Visit

Jan-2°28°F
Feb-2°29°F
Mar1°34°F
Apr5°41°F
May10°50°F
Jun16°61°F
Jul21°70°F
Aug21°71°F
Sep18°65°F
Oct13°55°F
Nov5°42°F
Dec1°33°F

The best time to visit Ajax is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 68 mm per month. By contrast, January can be quite cold with temperatures dropping to -4°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Ajax is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 67°F with modest rainfall averaging 2.7 in per month. By contrast, January can be quite cold with temperatures dropping to 24°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Ajax based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Ajax based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-4 °C24 °F
0 °C33 °F
24 km/h15 mph
89 mm3.5 in
33 cm13 in
Feb
-4 °C25 °F
1 °C34 °F
24 km/h15 mph
80 mm3.2 in
40 cm16 in
Mar
-1 °C31 °F
4 °C39 °F
21 km/h13 mph
94 mm3.7 in
17 cm7 in
Apr
3 °C38 °F
7 °C45 °F
20 km/h12 mph
111 mm4.4 in
7 cm3 in
May
8 °C47 °F
12 °C54 °F
15 km/h10 mph
83 mm3.3 in
0 cm0 in
Jun
14 °C58 °F
18 °C65 °F
16 km/h10 mph
70 mm2.7 in
0 cm0 in
Jul
19 °C67 °F
23 °C74 °F
14 km/h9 mph
71 mm2.8 in
0 cm0 in
Aug
20 °C67 °F
23 °C74 °F
15 km/h9 mph
68 mm2.7 in
0 cm0 in
Sep
17 °C62 °F
20 °C69 °F
16 km/h10 mph
62 mm2.4 in
0 cm0 in
OctCurrent
11 °C51 °F
15 °C58 °F
20 km/h13 mph
94 mm3.7 in
0 cm0 in
Nov
4 °C39 °F
8 °C46 °F
22 km/h14 mph
80 mm3.2 in
9 cm4 in
Dec
-1 °C30 °F
3 °C37 °F
24 km/h15 mph
101 mm4 in
33 cm13 in