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Coldest sea in Portugal in August

187 coastal locations in Portugal ranked by typical August sea temperature, coldest first. Region-wide average in August: 20.0°C.

Coldest in August

Aver-o-Mar

16.9°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.

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 Portugal locations in August

Sorted by typical August mean from a decade of daily readings, coldest first. Click any place for the full location page.

# 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
11 Torreira Continental Portugal 17.0°C
12 Vila do Conde Continental Portugal 17.0°C
13 Vila Praia de Ancora Continental Portugal 17.0°C
14 Oporto (Porto) Porto 17.2°C
15 Canidelo 17.3°C
16 Espinho Continental Portugal 17.3°C
17 Leca da Palmeira Continental Portugal 17.3°C
18 Leixoes Continental Portugal 17.3°C
19 Matosinhos Continental Portugal 17.3°C
20 Porto Continental Portugal 17.3°C
21 Vila Nova de Gaia Continental Portugal 17.3°C
22 Costa Nova Continental Portugal 17.7°C
23 Alhandra Continental Portugal 17.7°C
24 Amadora Continental Portugal 17.7°C
25 Azenhas do Mar Continental Portugal 17.7°C
Show 25 more ▸
26 Cabo da Roca Continental Portugal 17.7°C
27 Ericeira Continental Portugal 17.7°C
28 Moscavide Continental Portugal 17.7°C
29 Povoa de Santa Iria Continental Portugal 17.7°C
30 Praia da Adraga Continental Portugal 17.7°C
31 Sao Joao da Talha Continental Portugal 17.7°C
32 Sintra Continental Portugal 17.7°C
33 Aveiro Continental Portugal 18.0°C
34 Praia de Mira Continental Portugal 18.0°C
35 Furadouro Continental Portugal 18.1°C
36 Pedrogao Continental Portugal 18.1°C
37 Praia da Vieira Continental Portugal 18.1°C
38 Vieira de Leiria Continental Portugal 18.1°C
39 Buarcos Continental Portugal 18.1°C
40 Figueira da Foz Continental Portugal 18.1°C
41 Porto de Aveiro Aveiro 18.1°C
42 Caldas da Rainha Continental Portugal 18.2°C
43 Foz do Arelho Continental Portugal 18.2°C
44 Leiria Continental Portugal 18.2°C
45 Obidos Continental Portugal 18.2°C
46 Nazare Continental Portugal 18.4°C
47 Salir do Porto Continental Portugal 18.4°C
48 Sao Martinho do Porto Continental Portugal 18.4°C
49 Aljezur Continental Portugal 18.6°C
50 Arrifana Beach Continental Portugal 18.6°C

Warmest 10 in Portugal in August

Same data the other way. The warmest spots for the same month.

# 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

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