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Coldest sea in South America in January

947 coastal locations in South America ranked by typical January sea temperature, coldest first. Region-wide average in January: 22.3°C.

Coldest in January

Weddell Sea

-1.8°C January mean in Argentina

Regional January average

22.3°C

across all 947 coastal locations in South America

Vs annual mean

+2.0°C

above the year-round regional average

What the South America sea feels like in January

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

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 January fits in the year

January 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 January 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 January

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

# Location January mean
1 Weddell Sea Argentine Antarctica -1.8°C
2 Ronne Ice Shelf Argentine Antarctica -1.8°C
3 Scotia Bay Argentine Antarctica 0.4°C
4 Signy Island Argentine Antarctica 0.4°C
5 Diego Ramirez Magallanes Region 7.4°C
6 Puerto Vancouver Tierra del Fuego Province 8.0°C
7 Caleta Brent Tierra del Fuego Province 8.1°C
8 Puerto San Juan del Salvamento Tierra del Fuego 8.1°C
9 Isla Observatorio Tierra del Fuego Province 8.2°C
10 Bahia Crossley Tierra del Fuego 8.2°C
11 Isla de los Estados 8.2°C
12 Cape Horn 8.3°C
13 Bahia Buen Suceso Tierra del Fuego 8.6°C
14 Caleta San Martin Magallanes and Chilean Antarctica 8.6°C
15 Bahia Thetis Tierra del Fuego Province 8.9°C
16 Port Stanley-A East Falkland 8.9°C
17 Ushuaia 9.0°C
18 Puerto Toro 9.1°C
19 Puerto Williams 9.1°C
20 Bahia Aguirre Tierra del Fuego 9.2°C
21 Punta Arenas 9.3°C
22 Strait of Magellan 9.3°C
23 Bleaker Island East Falkland 9.9°C
24 Puerto Natales 10.0°C
25 Adventure Sound East Falkland 10.0°C
Show 25 more ▸
26 Fanny Cove Creek East Falkland 10.0°C
27 North Arm East Falkland 10.0°C
28 Tierra del Fuego 10.1°C
29 Port Stephens West Falkland 10.1°C
30 Rio Grande 10.2°C
31 Stanley 10.3°C
32 Albemarle West Falkland 10.3°C
33 Fox Bay West Falkland 10.3°C
34 New Island North West Islands 10.3°C
35 Berkeley Sound Lafonia 10.3°C
36 Port Stanley-B East Falkland 10.3°C
37 Cabo Virgenes Santa Cruz 10.4°C
38 Magellan Strait East Entrance Magallanes Region 10.4°C
39 Punta Dungeness Magallanes y la Antártica Chilena 10.4°C
40 Fitzroy Creek East Falkland 10.4°C
41 Argentino Lake 10.5°C
42 El Calafate 10.5°C
43 Viedma Lake 10.5°C
44 Port Salvador Entrance East Falkland 10.5°C
45 Golding Island North West Islands 10.6°C
46 Pebble Island North West Islands 10.6°C
47 Caleta la Mision Tierra del Fuego 10.6°C
48 Keppel Sound West Falkland 10.7°C
49 Saunders Island North West Islands 10.7°C
50 Punta Catalina Magallanes y la Antártica Chilena 10.7°C

Warmest 10 in South America in January

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

# Location January mean
1 Covenas 29.3°C
2 Tolu 29.1°C
3 Macapa Amapa 29.0°C
4 Santana Amapa 29.0°C
5 Barcarena Para 28.9°C
6 Cameta Para 28.9°C
7 Limoeiro do Ajuru Para 28.9°C
8 Oeiras do Para Para 28.9°C
9 Porto de Mosqueiro Pará 28.9°C
10 Ilha Do Brigue State of Amapá 28.9°C

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