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Coldest sea in Brazil

298 coastal locations in Brazil ranked by year-round average sea temperature, coldest first. The regional average is 24.9°C. The top of the list is where the water stays cold all year. The contrast list at the bottom shows the warmest coasts for context.

Coldest location

Chui

Year-round average 18.2°C in Brazil

Regional average

24.9°C

across all 298 Brazil coastal locations

Coldest month

August

22.6°C region-wide average

Brazil monthly average 22.6°C to 27.1°C
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  • Warmest month February 27.1°C
  • Coldest month August 22.6°C
  • Annual mean 24.9°C
  • Months above 20°C 12 of 12

Month by month across Brazil

Sea temperatures in Brazil swing from 22.6°C in August to 27.1°C in February on average across every coast we track. That spread of 4°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

Brazil sea temperature map

Today's pin colours show the latest daily reading at every Brazil location we track. Cool blues cluster around the high-latitude coasts.

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 locations in Brazil

Coastal locations across Brazil sorted by year-round average, coldest first. Honest cold-water swimming country. Click any place for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 Chui Rio Grande do Sul 18.2°C
2 Hermenegildo Rio Grande do Sul 18.2°C
3 Cassino Rio Grande do Sul 19.5°C
4 Rio Grande Rio Grande do Sul 19.5°C
5 Porto Rio Grande Rio Grande do Sul 19.6°C
6 Pelotas Rio Grande do Sul 19.6°C
7 Cidreira Rio Grande do Sul 20.5°C
8 Atlantida Sul Rio Grande do Sul 20.5°C
9 Capao da Canoa Rio Grande do Sul 20.5°C
10 Tramandai Rio Grande do Sul 20.5°C
11 Xangri-La Rio Grande do Sul 20.5°C
12 Arroio do Sal Rio Grande do Sul 20.8°C
13 Tapes Rio Grande do Sul 20.8°C
14 Torres Rio Grande do Sul 20.9°C
15 Ararangua Santa Catarina 20.9°C
16 Arroio do Silva Santa Catarina 20.9°C
17 Guaiba Rio Grande do Sul 21.2°C
18 Porto Alegre Rio Grande do Sul 21.2°C
19 Laguna Santa Catarina 21.3°C
20 Barra do Camacho Santa Catarina 21.3°C
21 Armacao Santa Catarina 21.6°C
22 Ferrugem Beach Santa Catarina 21.6°C
23 Gamboa Santa Catarina 21.6°C
24 Garopaba Santa Catarina 21.6°C
25 Guarda do Embau Santa Catarina 21.6°C
Show 25 more ▸
26 Ibiraquera Santa Catarina 21.6°C
27 Imbituba Santa Catarina 21.6°C
28 Pantano do Sul Santa Catarina 21.6°C
29 Pinheira Santa Catarina 21.6°C
30 Ponta do Papagaio Santa Catarina 21.6°C
31 Praia do Rosa Santa Catarina 21.6°C
32 Campinas Santa Catarina 22.1°C
33 Costeira do Pirajubae Santa Catarina 22.1°C
34 Florianopolis Santa Catarina 22.1°C
35 Freguesia do Ribeirao da Ilha Santa Catarina 22.1°C
36 Palhoca Santa Catarina 22.1°C
37 Saco dos Limoes Santa Catarina 22.1°C
38 Santo Antonio de Lisboa Santa Catarina 22.1°C
39 Tapera Santa Catarina 22.1°C
40 Trindade Santa Catarina 22.1°C
41 Barra da Lagoa Santa Catarina 22.3°C
42 Biguacu Santa Catarina 22.3°C
43 Campeche Beach Santa Catarina 22.3°C
44 Campeche Island Santa Catarina 22.3°C
45 Daniela beach Santa Catarina 22.3°C
46 Governador Celso Ramos Santa Catarina 22.3°C
47 Joaquina Beach Santa Catarina 22.3°C
48 Jurere Santa Catarina 22.3°C
49 Lagoa da Conceicao Santa Catarina 22.3°C
50 Mole Beach Santa Catarina 22.3°C

Warmest 10 in Brazil for contrast

Same data flipped. Useful if you want to know which Brazil coasts stay warmest year-round before you commit to a cold-water swim trip.

# Location Annual mean
1 Ilha Do Brigue State of Amapá 29.3°C
2 Macapa Amapa 29.3°C
3 Santana Amapa 29.3°C
4 Barcarena Para 29.2°C
5 Cameta Para 29.2°C
6 Limoeiro do Ajuru Para 29.2°C
7 Oeiras do Para Para 29.2°C
8 Porto de Mosqueiro Pará 29.1°C
9 Belem Para 29.1°C
10 Ananindeua Para 29.1°C

More on this region