Climate averages 1991–2020
Mississauga weather
in May.
A mild, moderately wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Mississauga: daytime highs average 17.7°C and nights cool to about 8.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 81 mm of rain on roughly 11 days, which makes May a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 41 min on an average May day.
The nearest other city in this atlas is Etobicoke (10 km away). In May its highs average 17.0°C, 0.6°C cooler than Mississauga, with 72 mm of rain.
Among the 86 cities listed in Canada, Mississauga ranks 33rd of 86 for the warmest May highs and joint 31st of 86 for the driest May (rainfall, lowest first). The mean May high of those 86 cities is 17.0°C; Mississauga is 0.7°C warmer than that mean.
From May to June, average highs rise by 5.4°C to 23.1°C, and monthly rainfall rises from 81 mm to 82 mm.
The annual picture
May in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Mississauga climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.2°C-8.4°C | -8.4°C | 70 | 10.9 | 9.39 h |
| February | -0.6°C-9.0°C | -9.0°C | 56 | 8.7 | 10.510 h |
| March | 4.3°C-4.5°C | -4.5°C | 65 | 9.6 | 11.912 h |
| April | 10.9°C1.7°C | 1.7°C | 89 | 11.3 | 13.413 h |
| May, selected | 17.7°C8.1°C | 8.1°C | 81 | 10.9 | 14.715 h |
| June | 23.1°C14.2°C | 14.2°C | 82 | 11.3 | 15.415 h |
| July | 26.0°C17.4°C | 17.4°C | 74 | 10.1 | 15.115 h |
| August | 25.1°C17.0°C | 17.0°C | 66 | 9.4 | 14.014 h |
| September | 21.3°C13.5°C | 13.5°C | 75 | 9.1 | 12.613 h |
| October | 14.2°C7.3°C | 7.3°C | 83 | 11.1 | 11.111 h |
| November | 7.3°C1.2°C | 1.2°C | 77 | 10.2 | 9.710 h |
| December | 1.8°C-4.0°C | -4.0°C | 70 | 10.6 | 9.09 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Etobicoke in MayCanada · 10 kmHigh 17.0°C · Low 8.1°C · 72 mm rain
- Oakville in MayCanada · 14 kmHigh 16.8°C · Low 8.8°C · 81 mm rain
- Brampton in MayCanada · 15 kmHigh 18.5°C · Low 8.0°C · 79 mm rain
- Milton in MayCanada · 19 kmHigh 18.5°C · Low 8.8°C · 83 mm rain
- Toronto in MayCanada · 25 kmHigh 15.8°C · Low 8.0°C · 72 mm rain
- Burlington in MayCanada · 26 kmHigh 17.4°C · Low 8.8°C · 81 mm rain
- Vaughan in MayCanada · 31 kmHigh 17.5°C · Low 7.8°C · 72 mm rain
- Thornhill in MayCanada · 32 kmHigh 16.9°C · Low 8.2°C · 72 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Mississauga) is explained once on the Mississauga year overview and on the Sources, method and limits page.
Oakville and Burlington lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.