Copenhagen vs Oslo: which is better, month by month

Copenhagen beats Oslo in 6 of 12 months — its lead peaks in November (58 vs 47) — while Oslo wins July; they are within 3 points in the other 5 months.

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.

Copenhagen

🇩🇰 Denmark · mild climate

Best month: June 92/100
Months won: 6 of 12

Oslo

🇳🇴 Norway · mild climate

Best month: July 94/100
Months won: 1 of 12

Copenhagen vs Oslo — all 12 months

Month	Copenhagen	Oslo	Winner	Gap
January	43Fcold, a little rain, clean air	33Ffreezing, a little rain, clean air	Copenhagen	10
February	51Dcold, a little rain, clean air	43Ffreezing, a little rain, clean air	Copenhagen	8
March	62Ccold, a little rain, clean air	61Ccold, a little rain, clean air	Tie	1
April	75Bcold, a little rain, clean air	76Bcold, a little rain, clean air	Tie	1
May	83Acool, a little rain, clean air	83Anice, a little rain, clean air	Tie	0
June	92Snice, a little rain, clean air	90Snice, rainy, clean air	Tie	2
July	89Anice, rainy, clean air	94Swarm, rainy, clean air	Oslo	5
August	88Anice, a little rain, clean air	86Anice, rainy, clean air	Tie	2
September	82Anice, a little rain, clean air	74Bnice, rainy, clean air	Copenhagen	8
October	68Ccool, a little rain, clean air	59Dcold, rainy, clean air	Copenhagen	9
November	58Dcold, a little rain, clean air	47Fcold, a little rain, clean air	Copenhagen	11
December	47Fcold, a little rain, clean air	36Ffreezing, a little rain, clean air	Copenhagen	11

A month is a tie when the two are within 3 points. The widest gap is November (58 vs 47). Tap a month for that month's temperature, rain, humidity and air quality side by side.