Istanbul vs Izmir: which is better, month by month

Izmir beats Istanbul in 6 of 12 months — its lead peaks in March (82 vs 72) — while Istanbul wins June to July; they are within 3 points in the other 4 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.

Istanbul

🇹🇷 Turkey · mild climate

Best month: May 94/100
Months won: 2 of 12

Izmir

🇹🇷 Turkey · mild climate

Best month: October 93/100
Months won: 6 of 12

Istanbul vs Izmir — all 12 months

Month	Istanbul	Izmir	Winner	Gap
January	59Dcold, rainy, muggy air	62Ccool, rainy, muggy air	Tie	3
February	66Ccold, a little rain, muggy air	73Bcool, a little rain, muggy air	Izmir	7
March	72Bcool, a little rain, muggy air	82Anice, a little rain	Izmir	10
April	84Anice, a little rain, muggy air	92Snice, a little rain	Izmir	8
May	94Snice, a little rain, muggy air	91Swarm, a little rain	Tie	3
June	87Ahot, dry	81Ahot, a little rain	Istanbul	6
July	78Bhot, a little rain	74Bsweltering, dry	Istanbul	4
August	77Bhot, dry, clean air	76Bsweltering, dry	Tie	1
September	86Awarm, a little rain	85Ahot, dry	Tie	1
October	88Anice, a little rain, clean air	93Swarm, a little rain	Izmir	5
November	74Bcool, rainy, clean air	78Bnice, rainy, muggy air	Izmir	4
December	63Ccold, rainy, muggy air	67Ccool, rainy, muggy air	Izmir	4

A month is a tie when the two are within 3 points. The widest gap is March (72 vs 82). Tap a month for that month's temperature, rain, humidity and air quality side by side.