Saint John Weather in May

What's the weather like in Saint John (New Brunswick) in May 2023?

The climate in Saint John during May can be summarized as cool and damp.

May is in the spring in Saint John and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 14°C (57°F), whilst at night 5°C (41°F) is normal.

Saint John weather averages (imperial / metric)
Daytime temperature 13.6°C 56.5°F
Nightly temperature 5°C 41°F
Average temperature 9.3°C 48.7°F
Daily sunshine 7 hrs
Avg rainfall 109 mm 4.3 ins
Rainy days 14 days
Sea temperature 5.9°C 42.6°F
Humidity 73%
Windspeed 16.2kph 10 mph

On average May is the 4th wettest month of the year in Saint John with around 109mm 4.3 inches of rain making it a damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.

On the flip side this corresponds to an average of 7 hours of sunshine per day.

May temperatures in Saint John

Saint John average temperature in May

May rainfall

Saint John average rain in May

May hourly sunshine

Saint John average rain in May

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 May 2022.

Other monthly averages

Best places to visit in May

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)

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