Swimming in Chile in september 2025 Sea temperature by city in september
Do you want to go to the beach in Chile 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 Chile by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Chile in september 2025
Here, find the average sea temperature in Chile in september in several coastal cities.
Easter island in september
70°F
min: 68°F / max: 71°F
North in september
63°F
min: 61°F / max: 65°F
Arica
60°F
min: 56°F / max: 64°F
Tongoy
57°F
min: 55°F / max: 59°F
Antofagasta
59°F
min: 57°F / max: 61°F
La Serena
57°F
min: 55°F / max: 59°F
Taltal
59°F
min: 56°F / max: 61°F
Patagonia in september
43°F
min: 42°F / max: 44°F
Parc national Isla Magdalena
49°F
min: 48°F / max: 50°F
Porvenir
43°F
min: 42°F / max: 44°F
Puerto Aguirre
49°F
min: 48°F / max: 50°F
Puerto Aisen
49°F
min: 48°F / max: 50°F
Central in september
56°F
min: 54°F / max: 58°F
56°F
min: 54°F / max: 57°F
Cobquecura
54°F
min: 52°F / max: 56°F
Pichilemu
56°F
min: 54°F / max: 57°F
Punta pite
56°F
min: 54°F / max: 58°F
Quintay
56°F
min: 54°F / max: 58°F
South in september
51°F
min: 49°F / max: 53°F
Bahía Mansa
53°F
min: 51°F / max: 55°F
Chiloe Island
52°F
min: 49°F / max: 53°F
Lebu
54°F
min: 52°F / max: 56°F
Lota
54°F
min: 52°F / max: 56°F
Puerto Montt
51°F
min: 50°F / max: 53°F
Where should you go swimming in Chile in the month of september?
Swimming in Chile in september is cool (in the best case scenario)
In september in Chile swimming conditions vary by city. Details below:
Swimming in september in Easter island and Iquique is possible but the sea is generally cool. So though the sea temperature may sometimes reach 71°F, it can also go as low as 68°F. Note that the average is 70°F.
Swimming in september in Arica and Tocopilla is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 56°F/max: 64°F).
Forget about swimming in Punta Arenas, Valparaiso, Constitucion, Quellon, Bahía Mansa, Cobquecura, Chiloe Island, Lebu, Lota, Parc national Isla Magdalena, Pichilemu, Porvenir, Puerto Aguirre, Puerto Montt, Punta pite, Quintay, San Antonio, Tongoy, Ancud, Antofagasta, Arauco, Calbuco, Concepción, Coronel, La Serena, Puerto Aisen, Taltal, Valdivia and Viña del Mar in september! The water temperature is freezing, reaching as low as 42°F (and only 44°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!
Where to go swimming in Chile in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Easter island
| September | |||
| Average sea temperature | 70°F | ||
| Minimum sea temperature | 68°F | ||
| Maximum sea temperature | 71°F | ||
| Average outside temperature | 67°F | ||
| Maximum outside temperature | 68°F | ||
| Minimum outside temperature | 67°F | ||
| Precipitation | 4in | ||
| Number of days of precipitation | 4 jour(s) (12%) | ||
| Cloud cover | 46% | ||
| Our opinion | cool swimming |
More information on swimming in Easter island in september
Iquique
| September | |||
| Average sea temperature | 63°F | ||
| Minimum sea temperature | 61°F | ||
| Maximum sea temperature | 65°F | ||
| Average outside temperature | 65°F | ||
| Maximum outside temperature | 70°F | ||
| Minimum outside temperature | 58°F | ||
| Precipitation | 0.1in | ||
| Cloud cover | 7% | ||
| Our opinion | cool swimming |
More information on swimming in Iquique in september
Punta Arenas
| September | |||
| Average sea temperature | 43°F | ||
| Minimum sea temperature | 42°F | ||
| Maximum sea temperature | 44°F | ||
| Average outside temperature | 43°F | ||
| Maximum outside temperature | 47°F | ||
| Minimum outside temperature | 41°F | ||
| Precipitation | 1.6in | ||
| Number of days of precipitation | 2 jour(s) (7%) | ||
| Cloud cover | 54% | ||
| Our opinion | freezing swimming |
More information on swimming in Punta Arenas in september
Valparaiso
| September | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 54°F | ||
| Maximum sea temperature | 58°F | ||
| Average outside temperature | 59°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 54°F | ||
| Precipitation | 0.6in | ||
| Number of days of precipitation | 1 jour(s) (3%) | ||
| Cloud cover | 23% | ||
| Our opinion | freezing swimming |
More information on swimming in Valparaiso in september
Constitucion
| September | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 54°F | ||
| Maximum sea temperature | 57°F | ||
| Average outside temperature | 56°F | ||
| Maximum outside temperature | 61°F | ||
| Minimum outside temperature | 52°F | ||
| Precipitation | 2.4in | ||
| Number of days of precipitation | 3 jour(s) (9%) | ||
| Cloud cover | 28% | ||
| Our opinion | freezing swimming |
More information on swimming in Constitucion in september
List of coastal cities in Chile
| Easter island in september | cool swimming |
| Iquique in september | cool swimming |
| Punta Arenas in september | freezing swimming |
| Valparaiso in september | freezing swimming |
| Constitucion in september | freezing swimming |
| Quellon in september | freezing swimming |
| Arica in september | cold swimming |
| Bahía Mansa in september | freezing swimming |
| Cobquecura in september | freezing swimming |
| Chiloe Island in september | freezing swimming |
| Lebu in september | freezing swimming |
| Lota in september | freezing swimming |
| Parc national Isla Magdalena in september | freezing swimming |
| Pichilemu in september | freezing swimming |
| Porvenir in september | freezing swimming |
| Puerto Aguirre in september | freezing swimming |
| Puerto Montt in september | freezing swimming |
| Punta pite in september | freezing swimming |
| Quintay in september | freezing swimming |
| San Antonio in september | freezing swimming |
| Tongoy in september | freezing swimming |
| Ancud in september | freezing swimming |
| Antofagasta in september | freezing swimming |
| Arauco in september | freezing swimming |
| Calbuco in september | freezing swimming |
| Concepción in september | freezing swimming |
| Coronel in september | freezing swimming |
| La Serena in september | freezing swimming |
| Puerto Aisen in september | freezing swimming |
| Taltal in september | freezing swimming |
| Tocopilla in september | cold swimming |
| Valdivia in september | freezing swimming |
| Viña del Mar in september | freezing swimming |