Mar del Plata vs Rosario: which is better, month by month

Rosario beats Mar del Plata in 8 of 12 months — its lead peaks in September (91 vs 70) — while Mar del Plata wins January to March; they are within 3 points in December.

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.

Mar del Plata

🇦🇷 Argentina · mild climate

Best month: January 87/100
Months won: 3 of 12

Rosario

🇦🇷 Argentina · mild climate

Best month: September 91/100
Months won: 8 of 12

Mar del Plata vs Rosario — all 12 months

Month	Mar del Plata	Rosario	Winner	Gap
January	87Ahot, a little rain, clean air	75Bsweltering, rainy, clean air	Mar del Plata	12
February	85Awarm, rainy, clean air	77Bsweltering, rainy, clean air	Mar del Plata	8
March	86Awarm, rainy, clean air	81Ahot, rainy, clean air	Mar del Plata	5
April	74Bnice, a little rain, clean air	84Awarm, rainy, clean air	Rosario	10
May	66Ccool, a little rain, clean air	83Anice, a little rain, clean air	Rosario	17
June	61Ccool, a little rain, clean air	81Anice, dry, clean air	Rosario	20
July	59Dcool, a little rain, clean air	79Bnice, a little rain, clean air	Rosario	20
August	67Ccool, a little rain, clean air	85Anice, a little rain, clean air	Rosario	18
September	70Bcool, a little rain, clean air	91Snice, a little rain, clean air	Rosario	21
October	76Bnice, a little rain, clean air	91Swarm, a little rain, clean air	Rosario	15
November	78Bwarm, rainy, clean air	86Ahot, rainy, clean air	Rosario	8
December	82Awarm, rainy, clean air	81Ahot, a little rain, clean air	Tie	1

A month is a tie when the two are within 3 points. The widest gap is September (70 vs 91). Tap a month for that month's temperature, rain, humidity and air quality side by side.