Climate averages 1991–2020
Québec weather
in May.
A mild, wet month: the 5th warmest and the joint 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Québec: daytime highs average 17.1°C and nights cool to about 6.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 101 mm of rain on roughly 13 days, which makes May a wet month (the joint 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 01 min on an average May day.
The nearest other city in this atlas is Trois-Rivières (114 km away). In May its highs average 18.0°C, 0.9°C warmer than Québec, with 96 mm of rain.
Among the 86 cities listed in Canada, Québec ranks joint 45th of 86 for the warmest May highs and 75th of 86 for the driest May (rainfall, lowest first). The mean May high of those 86 cities is 17.0°C; Québec is 0.1°C warmer than that mean.
From May to June, average highs rise by 5.0°C to 22.1°C, and monthly rainfall rises from 101 mm to 118 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
Québec climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -7.0°C-15.9°C | -15.9°C | 83 | 11.8 | 9.09 h |
| February | -5.0°C-14.0°C | -14.0°C | 69 | 9.8 | 10.310 h |
| March | 0.8°C-8.2°C | -8.2°C | 81 | 10.7 | 11.912 h |
| April | 8.1°C-1.6°C | -1.6°C | 104 | 11.4 | 13.614 h |
| May, selected | 17.1°C6.7°C | 6.7°C | 101 | 13.1 | 15.015 h |
| June | 22.1°C12.6°C | 12.6°C | 118 | 12.4 | 15.816 h |
| July | 24.3°C15.6°C | 15.6°C | 120 | 14.1 | 15.515 h |
| August | 23.2°C14.7°C | 14.7°C | 113 | 13.1 | 14.214 h |
| September | 18.9°C10.4°C | 10.4°C | 109 | 11.6 | 12.613 h |
| October | 11.3°C4.1°C | 4.1°C | 125 | 12.2 | 10.911 h |
| November | 3.8°C-2.7°C | -2.7°C | 98 | 12.6 | 9.49 h |
| December | -3.2°C-11.1°C | -11.1°C | 101 | 12.7 | 8.69 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
- Trois-Rivières in MayCanada · 114 kmHigh 18.0°C · Low 8.0°C · 96 mm rain
- Sherbrooke in MayCanada · 166 kmHigh 17.3°C · Low 7.0°C · 117 mm rain
- Saguenay in MayCanada · 179 kmHigh 15.2°C · Low 4.0°C · 92 mm rain
- Repentigny in MayCanada · 209 kmHigh 18.4°C · Low 8.2°C · 93 mm rain
- Terrebonne in MayCanada · 224 kmHigh 18.4°C · Low 8.3°C · 95 mm rain
- Longueuil in MayCanada · 226 kmHigh 18.5°C · Low 8.3°C · 100 mm rain
- Mercier–Hochelaga-Maisonneuve in MayCanada · 226 kmHigh 18.5°C · Low 8.3°C · 100 mm rain
- Saint-Jean-sur-Richelieu in MayCanada · 230 kmHigh 18.4°C · Low 8.1°C · 104 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 Québec) is explained once on the Québec year overview and on the Sources, method and limits page.