The temperatures in Saint John in September are usually low and can range between 11°C and 18°C.
You can expect about 3 to 8 days of rain in Saint John during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Saint John in September 2024.
If you’re planning to visit Saint John in the near future, we highly recommend that you review the 14 day weather forecast for Saint John before you arrive.
Temperatures
18° / 11°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
72
mm
Sun Hours
9.5
Hrs
