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Coldest sea in South America in October

947 coastal locations in South America ranked by typical October sea temperature, coldest first. Region-wide average in October: 19.4°C.

Coldest in October

Ronne Ice Shelf

-1.8°C October mean in Argentina

Regional October average

19.4°C

across all 947 coastal locations in South America

Vs annual mean

-1.0°C

below the year-round regional average

What the South America sea feels like in October

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

South America monthly average 18.1°C to 22.7°C
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  • Warmest month February 22.7°C
  • Coldest month August 18.1°C
  • Annual mean 20.4°C
  • Months above 20°C 7 of 12

Where October fits in the year

October sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve South America month rankings:

South America sea temperature map (live)

The map shows today's latest reading at every South America location. The list below is based on the typical October mean.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 coldest South America locations in October

Sorted by typical October mean from a decade of daily readings, coldest first. Click any place for the full location page.

# Location October mean
1 Ronne Ice Shelf Argentine Antarctica -1.8°C
2 Weddell Sea Argentine Antarctica -1.8°C
3 Signy Island Argentine Antarctica -1.5°C
4 Scotia Bay Argentine Antarctica -1.5°C
5 Rio Grande 5.1°C
6 Caleta la Mision Tierra del Fuego 5.1°C
7 Tierra del Fuego 5.1°C
8 Bahía San Sebastián Tierra del Fuego 5.4°C
9 Cabo Virgenes Santa Cruz 5.5°C
10 Magellan Strait East Entrance Magallanes Region 5.5°C
11 Punta Dungeness Magallanes y la Antártica Chilena 5.5°C
12 Diego Ramirez Magallanes Region 5.6°C
13 Port Stanley-A East Falkland 5.6°C
14 Punta Catalina Magallanes y la Antártica Chilena 5.7°C
15 Rio Gallegos 5.9°C
16 Berkeley Sound Lafonia 5.9°C
17 Port Stanley-B East Falkland 5.9°C
18 Port Salvador Entrance East Falkland 5.9°C
19 Stanley 5.9°C
20 Puerto Vancouver Tierra del Fuego Province 5.9°C
21 Cabo Posesion Magallanes y la Antártica Chilena 5.9°C
22 Ajax Bay East Falkland 6.0°C
23 New Haven East Falkland 6.0°C
24 North West Islands North West Islands 6.0°C
25 Caleta Brent Tierra del Fuego Province 6.0°C
Show 25 more ▸
26 Bleaker Island East Falkland 6.0°C
27 Adventure Sound East Falkland 6.0°C
28 Fanny Cove Creek East Falkland 6.0°C
29 North Arm East Falkland 6.0°C
30 Fitzroy Creek East Falkland 6.0°C
31 Golding Island North West Islands 6.0°C
32 Pebble Island North West Islands 6.0°C
33 Bahia Crossley Tierra del Fuego 6.1°C
34 Lively Settlement East Falkland 6.1°C
35 Mare Harbour East Falkland 6.1°C
36 Puerto San Juan del Salvamento Tierra del Fuego 6.1°C
37 Fox Bay West Falkland 6.1°C
38 Keppel Sound West Falkland 6.1°C
39 Isla Observatorio Tierra del Fuego Province 6.1°C
40 Port Stephens West Falkland 6.2°C
41 Bahia Aguirre Tierra del Fuego 6.2°C
42 Albemarle West Falkland 6.2°C
43 Saunders Island North West Islands 6.2°C
44 Bahia Buen Suceso Tierra del Fuego 6.2°C
45 Great Island East Falkland 6.2°C
46 Port Howard Lafonia 6.2°C
47 Speedwell Island Falkland Sound 6.2°C
48 Swan Island Swan Island 6.2°C
49 Isla de los Estados 6.2°C
50 New Island North West Islands 6.3°C

Warmest 10 in South America in October

Same data the other way. The warmest spots for the same month.

# Location October mean
1 Bahia el Tablazo Zulia 30.4°C
2 El Toro Zulia 30.4°C
3 Punta de Palmas Zulia 30.4°C
4 Malecon Zulia 30.3°C
5 Cabimas 30.2°C
6 El Toro 30.2°C
7 Maracaibo 30.2°C
8 Tia Juana 30.2°C
9 Macapa Amapa 30.0°C
10 Santana Amapa 30.0°C

More on this region