Saint John Weather in August

What's the weather like in Saint John (New Brunswick) in August 2024?

The climate in Saint John during August can be summarized as mild and a little damp.

August is in the summer in Saint John and is typically the warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 13°C (55°F) is normal.

Saint John weather averages (imperial / metric)
Daytime temperature 21.4°C 70.4°F
Nightly temperature 12.7°C 54.8°F
Average temperature 17°C 62.6°F
Daily sunshine 7.5 hrs
Avg rainfall 97 mm 3.8 ins
Rainy days 12 days
Sea temperature 15°C 59°F
Humidity 79%
Windspeed 12.6kph 8 mph

On average August is the 3rd driest month of the year in Saint John with around 97mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.5 hours of sunshine per day.

August temperatures in Saint John

Saint John average temperature in August

August rainfall

Saint John average rain in August

August hourly sunshine

Saint John average rain in August

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Saint John in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Saint John weather stats

Saint John weather statistics
Hottest month: August 21.1°C 70°F
Driest month: March 95mm 3.7ins
Sunniest month: August 7.5hrs
Coldest month: January -2.3°C 27.9°F
Wettest month: December 145mm 5.7ins
Map showing location of Saint John (45.27271, -66.06766) Saint John map pin © Google

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