Helsinki vs Trondheim: which is better, month by month

Trondheim beats Helsinki in 2 of 12 months — its lead peaks in February (44 vs 38) — and they are within 3 points in April to January.

Each place is scored under the lens that suits its type. 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: 0 of 12

Trondheim

🇳🇴 Norway · mild climate

Best month: July 92/100
Months won: 2 of 12

Helsinki vs Trondheim — all 12 months

Month	Helsinki	Trondheim	Winner	Gap
January	30Ffreezing, a little rain, clean air	33Ffreezing, rainy, clean air	Tie	3
February	38Ffreezing, a little rain, clean air	44Ffreezing, a little rain, clean air	Trondheim	6
March	52Dfreezing, a little rain, clean air	56Dcold, a little rain, clean air	Trondheim	4
April	70Bcold, a little rain, muggy air	70Bcold, a little rain, clean air	Tie	0
May	81Acool, a little rain, clean air	80Acool, a little rain, clean air	Tie	1
June	90Snice, a little rain, clean air	88Anice, a little rain, clean air	Tie	2
July	93Snice, a little rain, clean air	92Snice, a little rain, clean air	Tie	1
August	87Anice, rainy, clean air	84Anice, rainy, clean air	Tie	3
September	77Bcool, a little rain, clean air	75Bcool, rainy, clean air	Tie	2
October	61Ccold, a little rain, clean air	60Ccold, rainy, clean air	Tie	1
November	45Fcold, a little rain, clean air	42Fcold, a little rain, clean air	Tie	3
December	34Ffreezing, a little rain, clean air	35Ffreezing, rainy, clean air	Tie	1

A month is a tie when the two are within 3 points. The widest gap is February (38 vs 44). Tap a month for that month's temperature, rain, humidity and air quality side by side.