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Warmest sea in Portugal in August

187 coastal locations in Portugal ranked by their typical August sea temperature. Region-wide average in August: 20.0°C. The top of the list is where to find the warmest swimming this month.

Warmest in August

Vila do Porto

24.6°C August mean in Portugal

Regional August average

20.0°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 August

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 August fits in the year

August 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 August 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 August

Sorted by the typical August 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 August mean
1 Vila do Porto Açores 24.6°C
2 Lajes (Flores) Açores 24.3°C
3 Santa Cruz (Flores) Açores 24.3°C
4 Santa Maria Island Azores 24.2°C
5 Santa Cruz Açores 24.0°C
6 Flores Island Azores 24.0°C
7 Horta,Azores Açores 24.0°C
8 Corvo Island Azores 23.9°C
9 Vila Franca do Campo Azores 23.9°C
10 Sao Jorge Island Azores 23.9°C
11 Sao Miguel Island Azores 23.8°C
12 Faial Island Azores 23.8°C
13 Horta Azores 23.8°C
14 Madalena Azores 23.8°C
15 Pico Island Azores 23.8°C
16 Ponta Delgada Azores 23.8°C
17 Rosto de Cao Azores 23.8°C
18 Sao Roque do Pico Azores 23.8°C
19 Faja de Baixo Azores 23.8°C
20 Rabo de Peixe Azores 23.8°C
21 Graciosa Island Azores 23.8°C
22 Angra do Heroismo Azores 23.7°C
23 Porto do Moniz Madeira 23.7°C
24 Praia da Vitoria Azores 23.7°C
25 Terceira Island Azores 23.7°C
Show 25 more ▸
26 Porto da Cruz Madeira 23.7°C
27 Canico Madeira 23.5°C
28 Funchal Madeira 23.5°C
29 Machico Madeira 23.5°C
30 Campanario Madeira 23.5°C
31 Ponta do Sol Madeira 23.5°C
32 Vila De Porto Santo Madeira 23.5°C
33 Faja da Ovelha Continental Portugal 23.4°C
34 Porto Moniz Madeira 23.4°C
35 Sao Vicente Madeira 23.4°C
36 Canical Madeira 23.4°C
37 Fora (Iheus Selvagens) Madeira 23.3°C
38 Porto Santo Madeira 23.2°C
39 Vila Baleira Madeira 23.2°C
40 Castro Marim Continental Portugal 22.3°C
41 Monte Gordo Continental Portugal 22.3°C
42 Praia Verde Continental Portugal 22.3°C
43 Vila Real de Santo Antonio Continental Portugal 22.3°C
44 Cabanas de Tavira Continental Portugal 21.9°C
45 Cacela Velha Continental Portugal 21.9°C
46 Fuseta Continental Portugal 21.9°C
47 Manta Rota Continental Portugal 21.9°C
48 Praia do Barril Continental Portugal 21.9°C
49 Tavira Continental Portugal 21.9°C
50 Ilha do Farol Continental Portugal 21.7°C

Coldest 10 in Portugal in August

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

# Location August mean
1 Aver-o-Mar Continental Portugal 16.9°C
2 Esposende Continental Portugal 16.9°C
3 Ofir Continental Portugal 16.9°C
4 Povoa de Varzim Continental Portugal 16.9°C
5 Viana do Castelo Continental Portugal 16.9°C
6 Afife Continental Portugal 17.0°C
7 Altura Continental Portugal 17.0°C
8 Caminha Continental Portugal 17.0°C
9 Esmoriz Continental Portugal 17.0°C
10 Moledo Continental Portugal 17.0°C

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