The highest day temperature in May 2023 was 91°F. The lowest night temperature was 33°F. The average values for day and night temperatures during May were 65.0°F и 49.2°F respectivly.

The average sea surface temperature in May 2023 for Montreal was 57.4°F. The maximum and minimum values were 46.4°F and 65.6°F respectively.

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in May for Montreal is 3.0 in.

The average wind speed in May is 8.6 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Montreal in May is 8.1 hours.