Mississauga Weather in May
Mississauga in May sees moderate daytime temperatures of 18°C (64°F) and nighttime lows of 8°C (46°F). Rainfall is fairly high this month at around 82 mm (3.2 in), so pack a rain jacket to stay dry.
Rainfall in Mississauga in May
This month experiences about 11 days of rain according to historical data, averaging 82 mm (3.2 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Mississauga in May
Expect highs of 18°C (64°F) in Mississauga in May, with nights dropping to around 8°C (46°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Mississauga in May
The month enjoys around 230 hours of sunshine, creating mostly sunny days with good weather conditions.If you prefer enjoying temperate temperatures and rain-free days, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Mississauga's climate page.
Mississauga Temperature in May
Min Temperature
8°C (46°F)
Max Temperature
18°C (64°F)
Chance of Rain
35%
Precipitation
82 mm (3.2 in)
Rainy days
11 days
Humidity
53%
Sunshine
230 hours
Percentage Sunshine
50%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mississauga typically rise from around 15°C (59°F) at the start of May to approximately 22°C (72°F) by the end. Nights are cool, with lows typically ranging from 6°C (43°F) to 13°C (55°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Mississauga in May
Browse day-by-day weather records for Mississauga spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mississauga historical weather extremes in May
Our historical data for Mississauga spans 1976 to 2025, revealing these weather extremes.
- The hottest May day on record in Mississauga reached 34°C (93°F) (May 29, 2006).
- Mississauga registered its coldest May night on May 9, 2020, with temperatures dropping to -3°C (27°F).
Best Places in Canada in May
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in May →
perfect weather
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tolerable
unpleasant
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What to Wear in Mississauga in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Mississauga in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Mississauga's climate page.
Temperature Rainfall Sunshine Humidity
See the full Mississauga climate overview or explore weather in Canada.
