What is the weather like in Reykjavík vs Sydney in September?

In September, Reykjavík averages 11°C high / 6°C low with about 133 mm of rain; Sydney averages 20°C high / 13°C low with about 73 mm.

Reykjavík vs Sydney in September

Sydney is the better pick in September — 89 vs 68 on SeasonMap's comfort score. Sydney is nice, a little rain, clean air, while Reykjavík is cold, rainy, clean air.

Reykjavík vs Sydney — September climate, side by side

	🇮🇸 Reykjavík	🇦🇺 Sydney
Comfort score	68/100 (C)	89/100 (A)
Feels-like high	8°C	19°C
Avg high / low	11° / 6°	20° / 13°
Rainfall	133 mm	73 mm
Rainy days	18	7
Humidity	85%	66%
Air quality (AQI)	32	45

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

Month by month

Reykjavík vs Sydney in September — FAQ

Is September better in Reykjavík or Sydney?: Sydney is the better pick in September — 89 vs 68 on SeasonMap's comfort score. Sydney is nice, a little rain, clean air, while Reykjavík is cold, rainy, clean air.
What is the weather like in Reykjavík vs Sydney in September?: In September, Reykjavík averages 11°C high / 6°C low with about 133 mm of rain; Sydney averages 20°C high / 13°C low with about 73 mm.