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Warmest sea in Portugal in September

187 coastal locations in Portugal ranked by their typical September sea temperature. Region-wide average in September: 19.9°C. The top of the list is where to find the warmest swimming this month.

Warmest in September

Fora (Iheus Selvagens)

24.0°C September mean in Portugal

Regional September average

19.9°C

across all 187 coastal locations in Portugal

Vs annual mean

+2.2°C

above the year-round regional average

What the Portugal sea feels like in September

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.

Portugal monthly average 15.4°C to 20.0°C
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  • Warmest month August 20.0°C
  • Coldest month March 15.4°C
  • Annual mean 17.7°C
  • Months above 20°C 0 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 Portugal month rankings:

Portugal sea temperature map (live)

The map shows today's latest reading at every Portugal 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 Portugal 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 Fora (Iheus Selvagens) Madeira 24.0°C
2 Porto do Moniz Madeira 24.0°C
3 Porto da Cruz Madeira 24.0°C
4 Vila do Porto Açores 23.9°C
5 Campanario Madeira 23.9°C
6 Ponta do Sol Madeira 23.9°C
7 Canico Madeira 23.8°C
8 Funchal Madeira 23.8°C
9 Machico Madeira 23.8°C
10 Santa Maria Island Azores 23.8°C
11 Faja da Ovelha Continental Portugal 23.8°C
12 Porto Moniz Madeira 23.8°C
13 Sao Vicente Madeira 23.8°C
14 Vila De Porto Santo Madeira 23.8°C
15 Canical Madeira 23.7°C
16 Porto Santo Madeira 23.6°C
17 Vila Baleira Madeira 23.6°C
18 Vila Franca do Campo Azores 23.5°C
19 Ponta Delgada Azores 23.5°C
20 Rosto de Cao Azores 23.5°C
21 Sao Miguel Island Azores 23.4°C
22 Faja de Baixo Azores 23.4°C
23 Rabo de Peixe Azores 23.4°C
24 Lajes (Flores) Açores 23.4°C
25 Santa Cruz (Flores) Açores 23.4°C
Show 25 more ▸
26 Flores Island Azores 23.3°C
27 Corvo Island Azores 23.2°C
28 Pico Island Azores 23.2°C
29 Sao Jorge Island Azores 23.1°C
30 Sao Roque do Pico Azores 23.1°C
31 Faial Island Azores 23.1°C
32 Horta Azores 23.1°C
33 Madalena Azores 23.1°C
34 Angra do Heroismo Azores 23.1°C
35 Horta,Azores Açores 23.1°C
36 Praia da Vitoria Azores 23.1°C
37 Terceira Island Azores 23.1°C
38 Graciosa Island Azores 23.1°C
39 Santa Cruz Açores 23.1°C
40 Ilha do Farol Continental Portugal 21.8°C
41 Castro Marim Continental Portugal 21.6°C
42 Monte Gordo Continental Portugal 21.6°C
43 Praia Verde Continental Portugal 21.6°C
44 Vila Real de Santo Antonio Continental Portugal 21.6°C
45 Cabanas de Tavira Continental Portugal 21.5°C
46 Cacela Velha Continental Portugal 21.5°C
47 Fuseta Continental Portugal 21.5°C
48 Manta Rota Continental Portugal 21.5°C
49 Praia do Barril Continental Portugal 21.5°C
50 Tavira Continental Portugal 21.5°C

Coldest 10 in Portugal in September

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

# Location September mean
1 Altura Continental Portugal 16.8°C
2 Caminha Continental Portugal 16.8°C
3 Esmoriz Continental Portugal 16.8°C
4 Torreira Continental Portugal 16.8°C
5 Vila do Conde Continental Portugal 16.8°C
6 Esposende Continental Portugal 16.9°C
7 Ofir Continental Portugal 16.9°C
8 Viana do Castelo Continental Portugal 16.9°C
9 Afife Continental Portugal 16.9°C
10 Moledo Continental Portugal 16.9°C

More on this region