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Warmest sea in Brazil in September

298 coastal locations in Brazil ranked by their typical September sea temperature. Region-wide average in September: 23.1°C. The top of the list is where to find the warmest swimming this month.

Warmest in September

Ilha Do Brigue

29.9°C September mean in Brazil

Regional September average

23.1°C

across all 298 coastal locations in Brazil

Vs annual mean

-1.8°C

below the year-round regional average

What the Brazil sea feels like in September

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.

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

Where September fits in the year

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

All twelve Brazil month rankings:

Brazil sea temperature map (live)

The map shows today's latest reading at every Brazil location. The list below is based on the typical September 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 Brazil locations in September

Sorted by the typical September 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 September mean
1 Ilha Do Brigue State of Amapá 29.9°C
2 Macapa Amapa 29.8°C
3 Santana Amapa 29.8°C
4 Cocal State of Amapá 29.6°C
5 Barcarena Para 29.2°C
6 Cameta Para 29.2°C
7 Limoeiro do Ajuru Para 29.2°C
8 Oeiras do Para Para 29.2°C
9 Belem Para 29.2°C
10 Porto de Mosqueiro Pará 29.1°C
11 Ananindeua Para 29.0°C
12 Rio Negro (near Barcelos) Amazonas 28.8°C
13 Soure Para 28.7°C
14 Ilha De Colares Pará 28.6°C
15 Ilha dos Guaras State of Pará 28.6°C
16 Vigia Para 28.6°C
17 Sao Caetano de Odivelas Para 28.6°C
18 Amazon river (near Manaus) Amazonas 28.5°C
19 Marapanim Para 28.4°C
20 Disney Espirito Santo 28.4°C
21 Salinopolis Para 28.4°C
22 Sao Joao de Pirabas Para 28.3°C
23 Augusto Correa Para 28.2°C
24 Itaqui Maranhão 28.2°C
25 Ponta da Madeira Maranhão 28.2°C
Show 25 more ▸
26 Sao Luis Maranhao 28.1°C
27 Alcantara Maranhao 28.0°C
28 Sao Jose de Ribamar Maranhao 28.0°C
29 Ilha de Santana State of Maranhão 27.8°C
30 Luis Correla Piauí 27.4°C
31 Tutoia Maranhao 27.4°C
32 Lencois Maranhenses Maranhao 27.3°C
33 Luis Correia Piaui 27.2°C
34 Camocim Ceara 27.1°C
35 Saint Peter and Saint Paul Rocks Federal District 27.1°C
36 Acaraú Ceará 27.0°C
37 Jijoca de Jericoacoara Ceara 27.0°C
38 Pecem Ceara 26.9°C
39 Areia Branca (Salineiro Terminal) State of Sergipe 26.9°C
40 Barra Grande Ceara 26.9°C
41 Paracuru Ceara 26.9°C
42 Port of Pecem Ceara 26.9°C
43 Baia do Sancho Pernambuco 26.8°C
44 Caucaia Ceara 26.8°C
45 Cumbuco Ceara 26.8°C
46 Fernando de Noronha Pernambuco 26.8°C
47 Fortaleza Ceara 26.8°C
48 Canoa Quebrada Ceara 26.8°C
49 Areia Branca Rio Grande do Norte 26.7°C
50 Porto de Natal Rio Grande do Norte 26.7°C

Coldest 10 in Brazil in September

Same data the other way. Helpful if you want to know which Brazil coasts to avoid for swimming in September.

# Location September mean
1 Chui Rio Grande do Sul 13.9°C
2 Hermenegildo Rio Grande do Sul 13.9°C
3 Cassino Rio Grande do Sul 15.4°C
4 Rio Grande Rio Grande do Sul 15.4°C
5 Porto Rio Grande Rio Grande do Sul 15.5°C
6 Pelotas Rio Grande do Sul 15.7°C
7 Cidreira Rio Grande do Sul 16.9°C
8 Atlantida Sul Rio Grande do Sul 17.0°C
9 Capao da Canoa Rio Grande do Sul 17.0°C
10 Tramandai Rio Grande do Sul 17.0°C

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