What is the weather like in Monaco vs Saint Helier in September?

In September, Monaco averages 25°C high / 19°C low with about 58 mm of rain; Saint Helier averages 20°C high / 14°C low with about 77 mm.

Monaco vs Saint Helier in September

Monaco is the better pick in September — 89 vs 83 on SeasonMap's comfort score. Monaco is warm, a little rain, muggy air, while Saint Helier is nice, a little rain, clean air.

Monaco vs Saint Helier — September climate, side by side

	Monaco	Saint Helier
Comfort score	89/100 (A)	83/100 (A)
Feels-like high	27°C	19°C
Avg high / low	25° / 19°	20° / 14°
Rainfall	58 mm	77 mm
Rainy days	9	11
Humidity	75%	79%
Air quality (AQI)	55	43

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

Monaco vs Saint Helier in September — FAQ

Is September better in Monaco or Saint Helier?: Monaco is the better pick in September — 89 vs 83 on SeasonMap's comfort score. Monaco is warm, a little rain, muggy air, while Saint Helier is nice, a little rain, clean air.
What is the weather like in Monaco vs Saint Helier in September?: In September, Monaco averages 25°C high / 19°C low with about 58 mm of rain; Saint Helier averages 20°C high / 14°C low with about 77 mm.