What is the weather like in Ottawa vs St. John's, Newfoundland in September?

In September, Ottawa averages 22°C high / 11°C low with about 66 mm of rain; St. John's, Newfoundland averages 18°C high / 9°C low with about 91 mm.

Ottawa vs St. John's, Newfoundland in September

Ottawa is the better pick in September — 89 vs 77 on SeasonMap's comfort score. Ottawa is nice, a little rain, clean air, while St. John's, Newfoundland is nice, rainy, clean air.

Ottawa vs St. John's, Newfoundland — September climate, side by side

	🇨🇦 Ottawa	🇨🇦 St. John's, Newfoundland
Comfort score	89/100 (A)	77/100 (B)
Feels-like high	22°C	17°C
Avg high / low	22° / 11°	18° / 9°
Rainfall	66 mm	91 mm
Rainy days	7	10
Humidity	75%	81%
Air quality (AQI)	39	36

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Ottawa vs St. John's, Newfoundland in September — FAQ

Is September better in Ottawa or St. John's, Newfoundland?: Ottawa is the better pick in September — 89 vs 77 on SeasonMap's comfort score. Ottawa is nice, a little rain, clean air, while St. John's, Newfoundland is nice, rainy, clean air.
What is the weather like in Ottawa vs St. John's, Newfoundland in September?: In September, Ottawa averages 22°C high / 11°C low with about 66 mm of rain; St. John's, Newfoundland averages 18°C high / 9°C low with about 91 mm.