Bilbao vs Porto: which is better, month by month

Porto beats Bilbao in 3 of 12 months — its lead peaks in August (95 vs 84) — while Bilbao wins May and October; they are within 3 points in the other 7 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.

Bilbao

🇪🇸 Spain · mild climate

Best month: June 91/100
Months won: 2 of 12

Porto

🇵🇹 Portugal · mild climate

Best month: August 95/100
Months won: 3 of 12

Bilbao vs Porto — all 12 months

Month	Bilbao	Porto	Winner	Gap
January	59Dcool, soaked, clean air	61Ccool, soaked, clean air	Tie	2
February	68Ccool, rainy, clean air	70Bcool, rainy, clean air	Tie	2
March	74Bcool, rainy, clean air	72Bcool, rainy, clean air	Tie	2
April	82Anice, rainy, clean air	79Bnice, rainy, clean air	Tie	3
May	90Snice, a little rain, clean air	86Anice, a little rain, clean air	Bilbao	4
June	91Swarm, a little rain, clean air	90Swarm, a little rain, clean air	Tie	1
July	88Awarm, a little rain, clean air	94Swarm, dry, clean air	Porto	6
August	84Ahot, a little rain, clean air	95Swarm, dry, clean air	Porto	11
September	86Awarm, rainy, clean air	91Swarm, a little rain, muggy air	Porto	5
October	81Anice, rainy, clean air	76Bnice, soaked, clean air	Bilbao	5
November	63Cnice, soaked, clean air	65Cnice, soaked, clean air	Tie	2
December	64Ccool, rainy, clean air	62Ccool, soaked, clean air	Tie	2

A month is a tie when the two are within 3 points. The widest gap is August (84 vs 95). Tap a month for that month's temperature, rain, humidity and air quality side by side.