Swimming in Argentina in september 2025 Sea temperature by city in september
Do you want to go to the beach in Argentina in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Argentina by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Argentina in september 2025
Here, find the average sea temperature in Argentina in september in several coastal cities.
Pampas in september
58°F
min: 54°F / max: 62°F
51°F
min: 48°F / max: 54°F
51°F
min: 49°F / max: 55°F
La Plata
58°F
min: 54°F / max: 62°F
Magdalena
58°F
min: 54°F / max: 62°F
Necochea
51°F
min: 49°F / max: 54°F
Patagonia in september
50°F
min: 48°F / max: 52°F
Comodoro Rivadavia
47°F
min: 45°F / max: 49°F
Río Gallegos
41°F
min: 40°F / max: 43°F
Valdés
50°F
min: 48°F / max: 52°F
Caleta Olivia
47°F
min: 45°F / max: 49°F
Rawson
50°F
min: 48°F / max: 52°F
Where should you go swimming in Argentina in the month of september?
Swimming in Argentina in september is freezing
In september in Argentina swimming conditions are generally the same everywhere.
Forget about swimming in Buenos Aires, Mar del Plata, Bahía Blanca, Puerto Madryn, Comodoro Rivadavia, Río Gallegos, Valdés, Caleta Olivia, La Plata, Magdalena, Necochea, Quilmes, Rawson, San Antonio Oeste and Villa Gesell in september! The water temperature is freezing, reaching as low as 54°F (and only 62°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!
Where to go swimming in Argentina in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Buenos Aires
| September | |||
| Average sea temperature | 58°F | ||
| Minimum sea temperature | 54°F | ||
| Maximum sea temperature | 62°F | ||
| Average outside temperature | 59°F | ||
| Maximum outside temperature | 65°F | ||
| Minimum outside temperature | 54°F | ||
| Precipitation | 4.3in | ||
| Number of days of precipitation | 5 jour(s) (16%) | ||
| Cloud cover | 34% | ||
| Our opinion | freezing swimming |
More information on swimming in Buenos Aires in september
Mar del Plata
| September | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 48°F | ||
| Maximum sea temperature | 54°F | ||
| Average outside temperature | 54°F | ||
| Maximum outside temperature | 58°F | ||
| Minimum outside temperature | 49°F | ||
| Precipitation | 3.3in | ||
| Number of days of precipitation | 4 jour(s) (14%) | ||
| Cloud cover | 36% | ||
| Our opinion | freezing swimming |
More information on swimming in Mar del Plata in september
Bahía Blanca
| September | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 49°F | ||
| Maximum sea temperature | 55°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 65°F | ||
| Minimum outside temperature | 49°F | ||
| Precipitation | 2.2in | ||
| Number of days of precipitation | 3 jour(s) (10%) | ||
| Cloud cover | 28% | ||
| Our opinion | freezing swimming |
More information on swimming in Bahía Blanca in september
Puerto Madryn
| September | |||
| Average sea temperature | 50°F | ||
| Minimum sea temperature | 48°F | ||
| Maximum sea temperature | 52°F | ||
| Average outside temperature | 56°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 50°F | ||
| Precipitation | 0.7in | ||
| Number of days of precipitation | 1 jour(s) (3%) | ||
| Cloud cover | 27% | ||
| Our opinion | freezing swimming |
More information on swimming in Puerto Madryn in september
Comodoro Rivadavia
| September | |||
| Average sea temperature | 47°F | ||
| Minimum sea temperature | 45°F | ||
| Maximum sea temperature | 49°F | ||
| Average outside temperature | 50°F | ||
| Maximum outside temperature | 58°F | ||
| Minimum outside temperature | 43°F | ||
| Precipitation | 1.1in | ||
| Number of days of precipitation | 2 jour(s) (5%) | ||
| Cloud cover | 30% | ||
| Our opinion | freezing swimming |
List of coastal cities in Argentina
| Buenos Aires in september | freezing swimming |
| Mar del Plata in september | freezing swimming |
| Bahía Blanca in september | freezing swimming |
| Puerto Madryn in september | freezing swimming |
| Comodoro Rivadavia in september | freezing swimming |
| Río Gallegos in september | freezing swimming |
| Valdés in september | freezing swimming |
| Caleta Olivia in september | freezing swimming |
| La Plata in september | freezing swimming |
| Magdalena in september | freezing swimming |
| Necochea in september | freezing swimming |
| Quilmes in september | freezing swimming |
| Rawson in september | freezing swimming |
| San Antonio Oeste in september | freezing swimming |
| Villa Gesell in september | freezing swimming |