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Warmest sea in South America in March

947 coastal locations in South America ranked by their typical March sea temperature. Region-wide average in March: 22.4°C. The top of the list is where to find the warmest swimming this month.

Warmest in March

Areia Branca (Salineiro Terminal)

29.4°C March mean in Brazil

Regional March average

22.4°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 March

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 March fits in the year

March 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 March mean, useful for trip planning weeks or months ahead.

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 warmest South America locations in March

Sorted by the typical March mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location March mean
1 Areia Branca (Salineiro Terminal) State of Sergipe 29.4°C
2 Cabedelo (Rio Paraiba) Paraíba 29.3°C
3 Cabedelo Paraiba 29.2°C
4 Joao Pessoa Paraiba 29.2°C
5 Areia Branca Rio Grande do Norte 29.1°C
6 Porto de Natal Rio Grande do Norte 29.1°C
7 Canoa Quebrada Ceara 29.1°C
8 Maracajau Rio Grande do Norte 29.1°C
9 Macau Rio Grande do Norte 29.1°C
10 Pipa Rio Grande do Norte 29.1°C
11 Natal Rio Grande do Norte 29.1°C
12 Pecem Ceara 29.1°C
13 Ponta Negra Rio Grande do Norte 29.1°C
14 Jaboatão Pernambuco 29.1°C
15 Jacuma Paraiba 29.0°C
16 Pitimbu Paraiba 29.0°C
17 Tambaba Paraiba 29.0°C
18 Touros Rio Grande do Norte 29.0°C
19 Porto de Suape Pernambuco 29.0°C
20 Acaraú Ceará 29.0°C
21 Itamaraca Pernambuco 29.0°C
22 Itapissuma Pernambuco 29.0°C
23 Muro Alto Beach Pernambuco 29.0°C
24 Olinda Pernambuco 29.0°C
25 Paulista Pernambuco 29.0°C
Show 25 more ▸
26 Port of Pecem Ceara 29.0°C
27 Porto de Galinhas Pernambuco 29.0°C
28 Barra Grande Ceara 29.0°C
29 Paracuru Ceara 29.0°C
30 Cabo de Santo Agostinho Pernambuco 29.0°C
31 Ipojuca Pernambuco 29.0°C
32 Jaboatao dos Guararapes Pernambuco 29.0°C
33 Luis Correla Piauí 29.0°C
34 Recife Pernambuco 29.0°C
35 Baia do Sancho Pernambuco 28.9°C
36 Caucaia Ceara 28.9°C
37 Cumbuco Ceara 28.9°C
38 Fernando de Noronha Pernambuco 28.9°C
39 Fortaleza Ceara 28.9°C
40 Jijoca de Jericoacoara Ceara 28.9°C
41 Maracaipe Pernambuco 28.9°C
42 Maragogi Alagoas 28.9°C
43 Praia dos Carneiros Pernambuco 28.9°C
44 Serrambi Pernambuco 28.9°C
45 Porto De Pedras Alagoas 28.9°C
46 Covenas 28.9°C
47 Antunes Alagoas 28.9°C
48 Sao Jose da Coroa Grande Pernambuco 28.9°C
49 Tamandare Pernambuco 28.9°C
50 Camocim Ceara 28.9°C

Coldest 10 in South America in March

Same data the other way. Helpful if you want to know which South America coasts to avoid for swimming in March.

# Location March mean
1 Weddell Sea Argentine Antarctica -1.8°C
2 Ronne Ice Shelf Argentine Antarctica -1.8°C
3 Signy Island Argentine Antarctica 0.6°C
4 Scotia Bay Argentine Antarctica 0.6°C
5 Diego Ramirez Magallanes Region 8.1°C
6 Puerto Vancouver Tierra del Fuego Province 8.3°C
7 Port Stanley-A East Falkland 8.3°C
8 Caleta Brent Tierra del Fuego Province 8.4°C
9 Puerto San Juan del Salvamento Tierra del Fuego 8.4°C
10 Isla Observatorio Tierra del Fuego Province 8.5°C

More on this region