Helsinki vs Mariehamn: which is better, month by month

Helsinki beats Mariehamn in 9 of 12 months — its lead peaks in October (61 vs 49) — and they are within 3 points in January to March.

Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Helsinki

🇫🇮 Finland · mild climate

Best month: July 93/100
Months won: 9 of 12

Mariehamn

Åland Islands · mild climate

Best month: July 87/100
Months won: 0 of 12

Helsinki vs Mariehamn — all 12 months

Month	Helsinki	Mariehamn	Winner	Gap
January	30Ffreezing, a little rain, clean air	27Ffreezing, a little rain, clean air	Tie	3
February	38Ffreezing, a little rain, clean air	37Ffreezing, a little rain, clean air	Tie	1
March	52Dfreezing, a little rain, clean air	51Dfreezing, a little rain, clean air	Tie	1
April	70Bcold, a little rain, muggy air	63Ccold, a little rain, clean air	Helsinki	7
May	81Acool, a little rain, clean air	76Bcool, dry, clean air	Helsinki	5
June	90Snice, a little rain, clean air	82Anice, a little rain, clean air	Helsinki	8
July	93Snice, a little rain, clean air	87Anice, a little rain, clean air	Helsinki	6
August	87Anice, rainy, clean air	80Anice, a little rain, clean air	Helsinki	7
September	77Bcool, a little rain, clean air	73Bcool, a little rain, clean air	Helsinki	4
October	61Ccold, a little rain, clean air	49Fcold, rainy, clean air	Helsinki	12
November	45Fcold, a little rain, clean air	34Fcold, a little rain, clean air	Helsinki	11
December	34Ffreezing, a little rain, clean air	24Ffreezing, a little rain, clean air	Helsinki	10

A month is a tie when the two are within 3 points. The widest gap is October (61 vs 49). Tap a month for that month's temperature, rain, humidity and air quality side by side.