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

In September, Charlottetown averages 21°C high / 11°C low with about 94 mm of rain; St. John's, Newfoundland averages 18°C high / 9°C low with about 91 mm.

Charlottetown vs St. John's, Newfoundland in September

Charlottetown is the better pick in September — 82 vs 77 on SeasonMap's comfort score. Charlottetown is nice, rainy, clean air, while St. John's, Newfoundland is nice, rainy, clean air.

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

	🇨🇦 Charlottetown	🇨🇦 St. John's, Newfoundland
Comfort score	82/100 (A)	77/100 (B)
Feels-like high	20°C	17°C
Avg high / low	21° / 11°	18° / 9°
Rainfall	94 mm	91 mm
Rainy days	9	10
Humidity	77%	81%
Air quality (AQI)	37	36

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

Month by month

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

Is September better in Charlottetown or St. John's, Newfoundland?: Charlottetown is the better pick in September — 82 vs 77 on SeasonMap's comfort score. Charlottetown is nice, rainy, clean air, while St. John's, Newfoundland is nice, rainy, clean air.
What is the weather like in Charlottetown vs St. John's, Newfoundland in September?: In September, Charlottetown averages 21°C high / 11°C low with about 94 mm of rain; St. John's, Newfoundland averages 18°C high / 9°C low with about 91 mm.