Buenos Aires vs Puerto Iguazú: which is better, month by month

Buenos Aires beats Puerto Iguazú in 9 of 12 months — its lead peaks in January (79 vs 50) — while Puerto Iguazú wins July; they are within 3 points in June and August.

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.

Buenos Aires

🇦🇷 Argentina · mild climate

Best month: October 90/100
Months won: 9 of 12

Puerto Iguazú

🇦🇷 Argentina · tropical climate

Best month: July 87/100
Months won: 1 of 12

Buenos Aires vs Puerto Iguazú — all 12 months

Month	Buenos Aires	Puerto Iguazú	Winner	Gap
January	79Bhot, a little rain, clean air	50Dsweltering, rainy, clean air	Buenos Aires	29
February	79Bhot, rainy, clean air	53Dsweltering, rainy, clean air	Buenos Aires	26
March	81Awarm, rainy, clean air	59Dsweltering, rainy, clean air	Buenos Aires	22
April	84Anice, rainy, clean air	72Bhot, rainy, clean air	Buenos Aires	12
May	82Anice, a little rain, clean air	74Bwarm, soaked, clean air	Buenos Aires	8
June	78Bcool, a little rain, clean air	80Awarm, rainy, clean air	Tie	2
July	76Bcool, a little rain, clean air	87Awarm, a little rain, clean air	Puerto Iguazú	11
August	82Acool, a little rain, clean air	81Awarm, rainy, clean air	Tie	1
September	86Anice, a little rain, clean air	76Bhot, rainy	Buenos Aires	10
October	90Snice, rainy, clean air	66Chot, soaked, clean air	Buenos Aires	24
November	88Awarm, a little rain, clean air	64Csweltering, rainy, clean air	Buenos Aires	24
December	83Ahot, a little rain, clean air	55Dsweltering, soaked, clean air	Buenos Aires	28

A month is a tie when the two are within 3 points. The widest gap is January (79 vs 50). Tap a month for that month's temperature, rain, humidity and air quality side by side.