Mar del Plata weather in September
September is a fair month to visit Mar del Plata: highs of 13°C (56°F) and about 77 mm (3.0 in) of rain on average. Nights average 7°C (45°F) and cloud cover 59% (NASA POWER, 2001–2025 averages). The sea averages 11°C (52°F). It is the 4th driest month of the year and the 4th coolest. Compared with August, it is warmer and about as wet; October brings highs of 16°C (61°F) and 101 mm (4.0 in) of rain.
Is September a good time to visit Mar del Plata?
fair month Weather score 55/100.
September is a fair month in Mar del Plata. The weather is usually best in Nov–Apr.
Does it rain a lot in Mar del Plata in September?
Some rain is normal: about 77 mm (3.0 in) falls in an average September. It is the 4th driest month of the year.
How warm is Mar del Plata in September?
Days average 13°C (56°F) and nights 7°C (45°F).
Mar del Plata weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 24°C (76°F) | 17°C (62°F) | 125 mm | 45% | 21°C (69°F) | best |
| February | 24°C (75°F) | 17°C (62°F) | 125 mm | 47% | 21°C (70°F) | best |
| March | 22°C (71°F) | 16°C (60°F) | 118 mm | 48% | 21°C (70°F) | best |
| April | 19°C (65°F) | 13°C (55°F) | 105 mm | 54% | 18°C (65°F) | best |
| May | 15°C (59°F) | 10°C (50°F) | 75 mm | 64% | 15°C (59°F) | fair |
| June | 12°C (54°F) | 7°C (45°F) | 62 mm | 64% | 13°C (55°F) | least pleasant |
| July | 11°C (51°F) | 6°C (42°F) | 70 mm | 67% | 10°C (51°F) | least pleasant |
| August | 12°C (53°F) | 6°C (43°F) | 78 mm | 62% | 10°C (50°F) | least pleasant |
| September | 13°C (56°F) | 7°C (45°F) | 77 mm | 59% | 11°C (52°F) | fair |
| October | 16°C (61°F) | 9°C (49°F) | 101 mm | 58% | 14°C (57°F) | fair |
| November | 19°C (67°F) | 12°C (53°F) | 106 mm | 49% | 16°C (61°F) | best |
| December | 23°C (73°F) | 15°C (58°F) | 115 mm | 46% | 18°C (65°F) | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months