What is the weather like in Helsinki vs Mariehamn in December?

In December, Helsinki averages 2°C high / -2°C low with about 59 mm of rain; Mariehamn averages 3°C high / -1°C low with about 64 mm.

Helsinki vs Mariehamn in December

Helsinki is the better pick in December — 34 vs 24 on SeasonMap's comfort score. Helsinki is freezing, a little rain, clean air, while Mariehamn is freezing, a little rain, clean air.

Helsinki vs Mariehamn — December climate, side by side

	🇫🇮 Helsinki	Mariehamn
Comfort score	34/100 (F)	24/100 (F)
Feels-like high	-3°C	-1°C
Avg high / low	2° / -2°	3° / -1°
Rainfall	59 mm	64 mm
Rainy days	12	13
Humidity	88%	82%
Air quality (AQI)	27	29

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

Month by month

Helsinki vs Mariehamn in December — FAQ

Is December better in Helsinki or Mariehamn?: Helsinki is the better pick in December — 34 vs 24 on SeasonMap's comfort score. Helsinki is freezing, a little rain, clean air, while Mariehamn is freezing, a little rain, clean air.
What is the weather like in Helsinki vs Mariehamn in December?: In December, Helsinki averages 2°C high / -2°C low with about 59 mm of rain; Mariehamn averages 3°C high / -1°C low with about 64 mm.