The highest day temperature in August 2025 was 95°F. The lowest night temperature was 45°F. The average values for day and night temperatures during August were 78.2°F и 59.3°F respectivly.

The average sea surface temperature in August 2025 for Quebec was 75.7°F. The maximum and minimum values were 71.0°F and 80.2°F respectively.

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

Precipitation total in August for Quebec is 3.2 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 6.5 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 Quebec in August is 8.3 hours.