Mississauga (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mississauga.
Climate overview of Mississauga
Temperatures in Mississauga, Ontario, Canada, vary greatly throughout the year. July is the hottest month at 27°C (81°F), while January is the coldest at 0°C (32°F).
With around 941 mm (37 in) of annual rain/snowfall, the city has moderate precipitation levels. April is the wettest month and February the driest. It also has warm summers and very cold winters. July is the sunniest month, averaging 9.8 hours of sunshine per day.
Mississauga Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mississauga - and find the best time to visit.
Monthly Temperature in Mississauga
The climate in Mississauga is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold 0°C (32°F) in the coolest month, January.
Nights vary from 17°C (63°F) in July to around -8°C (18°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mississauga
Generally, Mississauga receives mid-range precipitation levels, with 941 mm (37 in) annually. Precipitation levels in Mississauga remain relatively steady throughout the year. April has the most rain, with 93 mm (3.7 in) over 11 days. In the driest month February, this drops slightly to 66 mm (2.6 in), making the city's climate fairly predictable. For more details, please visit our Mississauga Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Mississauga
For those who appreciate different seasons, Mississauga serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.8 hours of sunshine daily, and embrace the darker days in January, offering only 2.6 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Mississauga by Month
The relative humidity is high throughout the year in Mississauga.
The city experiences its highest humidity in January, reaching 72%. In May, the humidity drops to its lowest level at 53%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Mississauga
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Mississauga
What is the best time to visit Mississauga?
June, July, August and September typically offer the most optimal weather in Mississauga. In contrast, January, February, March, November and December tend to have less optimal conditions. Mississauga has warm summers and very cold winters.
What temperatures can I expect in Mississauga?
Daytime highs range from 0°C (32°F) in January to 27°C (81°F) in July. Nighttime lows range from -8°C (18°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Mississauga get?
Annual rainfall is around 941 mm (37 in). April is the wettest month with 93 mm (3.7 in), while February is the driest with 66 mm (2.6 in).
How sunny is Mississauga?
Mississauga receives around 2,184 hours of sunshine per year. July is the sunniest month with 295 hours, while January is the cloudiest with just 78 hours. Overall, Mississauga enjoys abundant sunshine.
Mississauga 3-Day Forecast
Mississauga on the map
Mississauga is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most beautiful lakes in Canada
Explore Canada's stunning lakes: Lake Louise, Lake Superior, Maligne Lake, Emerald Lake, and Lake Okanagan, each offering unique beauty and activities.
Canoeing the south Nahannii
The South Nahanni in the northwest of Canada is one of the most impressive wilderness rivers in the world. Canoeing the south Nahanni is something you must add to your bucket list.
See Polar Bears in Churchill Canada
Thousands of bears gather at the small town of Churchill. In the evening the northern lights give a light show against the dark evening sky. An unforgettable experience.
Banff National Park
Snowy mountains, clear blue lakes and green forests make Banff National Park a wonderful bucket list destination. The pristine wilderness is a mecca for walkers.