Climate and monthly weather forecast
Mississauga, Canada

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The climate of Mississauga

Mississauga, located in Canada, finds itself positioned under a unique climatological umbrella classified under the Köppen climate classification as Dfb. This climatic frame translates to a humid continental profile, characterized by the absence of a dry season yet accompanied by warm summers. Wide variations in weather parameters mark Mississauga's climate, painting a diverse and dynamic meteorological landscape for the city throughout the year.

Temperature fluctuates significantly ranging from -6.1°C (21°F) in the cold of January to a much warmer 24.8°C (76.6°F) in July's heat. The city experiences a gradual increase in temperature from the start of the year till midsummer before it begins to drop gradually towards the year-end. Mississauga's humidity remains relatively constant, hovering around 78% in the middle of the year before rising to 83% towards the end. Rainfall sees highs of 80mm (3.15") in July and lows of 55mm (2.17") in September and November, while snowfall hits peak levels of 83mm (3.27") and 127mm (5") in January and February respectively, falling to bare traces from June to October.

Sunlight and UV Index show predictable patterns, both peaking in summer months, thereby indicating longer, brighter days during this period. Wind speed averages around 19.7km/h (12.2mph) in December with gusts reaching maximum speeds of 30.2km/h (18.8mph). This climatic concoction positions Mississauga as a region with a unique blend of conditions, worthy of exploration and discovery.

The best time to visit Mississauga

Ideal travel conditions largely depend on personal preferences. However, objectively speaking, one may find the period between May to September most agreeable. This period is marked by warm temperatures ranging from 16.2°C (61.2°F) to 24.8°C (76.6°F) and relative humidity around 78%. Rainfall averages between 72mm (2.83") and 80mm (3.15") with no snow recorded, translating into ideal conditions for outdoor activities. With 9.2 to 10.7 hours of sunshine per day and a UV Index fluctuating between 4 and 6, it is an optimal time for those seeking a sun-filled getaway.

The worst time to visit Mississauga

The city’s harshest months are undeniably from December to February. During these months, temperatures sink to lows between -6.1°C (21°F) and -1.5°C (29.3°F) with snowfall reaching significant heights of 76mm (2.99") to 127mm (5"). Although December offers 9 hours of daylight, these are matched by a minimal sun exposure of 3.2 hours daily and a low UV Index of 1. With wind speeds peaking at 19.7km/h (12.2mph) in December, travelling during these months can be quite challenging especially for those unaccustomed to harsh winter conditions.

Spring weather in Mississauga

Spring, from March to May, is marked by a gradual warming of temperatures, starting from -0.5°C (31.1°F) in March to the pleasant 16.2°C (61.2°F) in May. Coupled with the combination of 60mm (2.36") to 79mm (3.11") average rainfall and receding snowfall (only 40mm (1.57") in March, falling to traces in May), the weather becomes relatively mild. The daylight hours increase from 12 in March to 14.7 hours in May, giving way to longer days. It is also during this period that the UV Index begins its ascent from 2 to 4.

Summer weather in Mississauga

Summers in Mississauga spanning June to August offer warm temperatures reaching high points of up to 24.8°C (76.6°F). The relative humidity remains constant at 78% while the city experiences an average rainfall from 72mm (2.83") to 80mm (3.15"). The summer months provide 15.4 hours of daylight at their peak in June, along with 9.8 to 10.7 hours of sunshine per day, and higher UV indexes between 5 and 6. These factors contribute to warm and satisfying summer days with ample light for outdoor activities.

Autumn weather in Mississauga

Autumn in Mississauga, from September to November, is characterized by temperatures that drop gradually between 21.5°C (70.7°F) to 7.8°C (46°F) throughout this timeframe. Rainfall during these months is around 55mm (2.17") to 73mm (2.87"), with snowfall remaining negligible until November when it records 43mm (1.69"). Though the daylight hours decrease from 12.5 hours to 9.7 hours in this period, the length of sun exposure maintains a moderate average of 4.5 to 9.4 hours per day. Autumn aligns with a decline in the UV index from 4 to 2.

Winter weather in Mississauga

Winter rolls out in its full glory in Mississauga from December to February, seeing temperatures plunging between -1.5°C (29.3°F) and -6.1°C (21°F). Surges in snowfall mark this period, registering 76mm (2.99") to 127mm (5") typical of Canadian winter. Daylight slides to the bottom of the year's scale, providing just 9 to 10.5 hours daily. However, sunshine durations are relatively short, ranging from 2.8 to 3.1 hours per day with the UV index standing at a year-round low of 1. Considering all these factors, winters in Mississauga are emblematic of a true Canadian experience.

Weather in January

January in Mississauga, Canada, sees the coldest temperatures of the year with the mercury dipping to a low of -6.1°C (21°F) on average. The onset of the year is characterized by snowy conditions, with more snowfall observed in this month compared to any other. Weather in January »

Weather in February

Despite the increase in daylight hours in February, the cold weather persists in this Canadian city, albeit with a slight increase in the average minimum temperature to -5.5°C (22.1°F). February is noted for its increased snowfall relative to January, recording an all-time high of 127mm (5"). Weather in February »

Weather in March

The month of March marks the transition from the harsh winter to the welcoming spring in Mississauga. Seen by a significant decrease in snowfall to 40mm (1.57"), and a surge in the average high temperature to 3.8°C (38.8°F). The increasing daylight and sunshine hours with a reduction in cloud cover signal the arrival of more pleasant times. Weather in March »

Weather in April

April sees the enthusiastic onset of spring in Mississauga, with a significant rise in mean maximum temperature to 9.4°C (48.9°F). The landscape transforms from white to a spectrum of colors as frozen rivers start flowing, and lush greenery takes the place of the receding snow. Weather in April »

Weather in May

May symbolizes the beginning of warm weather in Mississauga with the highest temperature escalating to 16.2°C (61.2°F). As the season transitions towards summer, cold winds get replaced by warm breezes, and the flora is in full bloom, casting a vibrant hue all around. Weather in May »

Weather in June

June in Mississauga sees a drastic increase in average maximum temperatures reaching a comfortable 20.9°C (69.6°F), announcing the onset of summer. With longer sunshine hours and more daylight, the city bursts into life, with buzzing outdoor activities and events. Weather in June »

Weather in July

July is the hottest month in Mississauga, experiencing the peak of summer warmth, moving up to a monthly maximum of 24.8°C (76.6°F). Just as high as the temperature, is the city's energy. Summer events, beach outings, and pool parties become the norm. Weather in July »

Weather in August

August’s weather remains much on par with July's, with maximum recorded average temperatures witnessing only a small dip to 24.6°C (76.3°F). This continuation of summer heat promotes outdoor events and activities throughout the city. Weather in August »

Weather in September

As September rolls in, it heralds the advent of fall in Mississauga, demonstrating a decrease in average temperature highs to 21.5°C (70.7°F). The lush greenery begins to change color, providing a picturesque cityscape scattered with hues of yellow, orange, and red. Weather in September »

Weather in October

October sees a stark change in climate with the average max temperature taking a steep fall to 14.4°C (57.9°F). Mississauga stands awash with vibrant autumn hues as the cool breeze rustles through the falling leaves. Days are sunnier than in September, but the chill in the air escalates missing the warmth of the summer gone by. Weather in October »

Weather in November

The winter season presents itself in November, as temperatures drop further, with the maximum reaching only 7.8°C (46°F). Snowfall makes a return, with the city beginning to see the first snow of the season. Days become shorter, and the chill in the air grows stronger, forcing residents to bundle up more warmly. Weather in November »

Weather in December

Mississauga in December is a winter wonderland, with the average maximum temperature down to a chilly 2.4°C (36.3°F). The city is a captivating sight, blanketed in fresh white snow. With Christmas around the corner, the festive cheer, combined with the winter cold, enhances the city's charm. Weather in December »

Frequently asked questions

What month is the coldest in Mississauga?

Mississauga's January weather reaches an average high of -1.4°C (29.5°F) and an average low of -6.1°C (21°F), making it the coldest month.

What are the most humid months in Mississauga?

The months with the highest humidity in Mississauga, Canada, are January and February, with an average relative humidity of 83%.

How much does it rain in Mississauga?

Throughout the year, in Mississauga, there are 177.2 rainfall days, and 786mm (30.94") of precipitation is accumulated.

When does it snow in Mississauga?

January through May, October through December are months with snowfall in Mississauga.

How much does it snow in Mississauga?

In Mississauga, Canada, during the entire year, snow falls for 58.5 days and aggregates up to 403mm (15.87") of snow.

What is the month with the least sunshine in Mississauga?

The month with the least sunshine in Mississauga is January, with an average of 2.8h of sunshine.

What are the months with the lowest UV index in Mississauga?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

When does it snow the most in Mississauga?

February is the month with the most snowfall. Snow falls for 14.1 days and accumulates 127mm (5") of snow.

What are the months with the coldest sea water in Mississauga?

February and March, with an average sea temperature of 1.4°C (34.5°F), are months with the coldest seawater.

When is Daylight Saving Time (DST) in Mississauga?

On Sunday, 10. March 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends on Sunday, 03. November 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Mississauga?

June through September are months without snowfall.

When are the longest days in Mississauga?

June has the longest days of the year in Mississauga, Canada, with an average of 15h and 24min of daylight.

What month is the hottest in Mississauga?

In Mississauga, July records the average highest temperatures, peaking at 24.8°C (76.6°F) and reaching a low of 18.6°C (65.5°F).

What is the wettest month in Mississauga?

The month with the most rainfall in Mississauga, Canada, is July, when the rain falls for 17.7 days and typically aggregates up to 80mm (3.15") of precipitation.

What month has the most sunshine in Mississauga?

July has the most sunshine of the year in Mississauga, with an average of 10.7h of sunshine.

What are the months with the highest UV index in Mississauga?

July and August, with an average maximum UV index of 6, are months with the highest UV index.

What month is the sea warmest in Mississauga?

With an average sea temperature of 22.3°C (72.1°F), August is the month with the warmest seawater in Mississauga.

What is the least humid month in Mississauga?

September is the least humid month, with an average relative humidity of 74%.

What is the driest month in Mississauga?

September and November are months with the least rain when the rain falls for 15.1 days and typically aggregates up to 55mm (2.17") of rain.

What is the month with the shortest days in Mississauga?

With an average of 9h and 0min of daylight, December has the shortest days of the year in Mississauga.

Average temperature
Mississauga, Canada

Average temperature - Mississauga, Canada

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-1.4°C).

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

Average pressure
Mississauga, Canada

Average pressure - Mississauga, Canada

The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

Average wind speed
Mississauga, Canada

Average wind speed - Mississauga, Canada

The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).

Average humidity
Mississauga, Canada

Average humidity - Mississauga, Canada

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).

Average rainfall
Mississauga, Canada

Average rainfall - Mississauga, Canada

The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).

Average rainfall days
Mississauga, Canada

Average rainfall days - Mississauga, Canada

The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).

Average snowfall
Mississauga, Canada

Average snowfall - Mississauga, Canada

The month with the highest snowfall is February (127mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days
Mississauga, Canada

Average snowfall days - Mississauga, Canada

The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature
Mississauga, Canada

Average sea temperature - Mississauga, Canada

The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest months (with the lowest average sea temperature) are February and March (1.4°C).

Average daylight / Average sunshine
Mississauga, Canada

Average daylight / Average sunshine - Mississauga, Canada

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days
Mississauga, Canada

Average sunshine days - Mississauga, Canada

The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).

Average UV index
Mississauga, Canada

Average UV index - Mississauga, Canada

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average visibility
Mississauga, Canada

Average visibility - Mississauga, Canada

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).

Mississauga, Canada

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