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Coldest sea in Portugal in May

187 coastal locations in Portugal ranked by typical May sea temperature, coldest first. Region-wide average in May: 17.3°C.

Coldest in May

Altura

15.8°C May mean in Portugal

Regional May average

17.3°C

across all 187 coastal locations in Portugal

Vs annual mean

-0.4°C

below the year-round regional average

What the Portugal sea feels like in May

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 May fits in the year

May 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 May 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 May

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

# Location May mean
1 Altura Continental Portugal 15.8°C
2 Caminha Continental Portugal 15.8°C
3 Esmoriz Continental Portugal 15.8°C
4 Torreira Continental Portugal 15.8°C
5 Vila do Conde Continental Portugal 15.8°C
6 Esposende Continental Portugal 15.9°C
7 Ofir Continental Portugal 15.9°C
8 Viana do Castelo Continental Portugal 15.9°C
9 Afife Continental Portugal 15.9°C
10 Aver-o-Mar Continental Portugal 15.9°C
11 Moledo Continental Portugal 15.9°C
12 Povoa de Varzim Continental Portugal 15.9°C
13 Vila Praia de Ancora Continental Portugal 15.9°C
14 Oporto (Porto) Porto 16.0°C
15 Canidelo 16.0°C
16 Espinho Continental Portugal 16.0°C
17 Leca da Palmeira Continental Portugal 16.0°C
18 Leixoes Continental Portugal 16.0°C
19 Matosinhos Continental Portugal 16.0°C
20 Porto Continental Portugal 16.0°C
21 Vila Nova de Gaia Continental Portugal 16.0°C
22 Alhandra Continental Portugal 16.2°C
23 Amadora Continental Portugal 16.2°C
24 Azenhas do Mar Continental Portugal 16.2°C
25 Cabo da Roca Continental Portugal 16.2°C
Show 25 more ▸
26 Ericeira Continental Portugal 16.2°C
27 Moscavide Continental Portugal 16.2°C
28 Povoa de Santa Iria Continental Portugal 16.2°C
29 Praia da Adraga Continental Portugal 16.2°C
30 Sao Joao da Talha Continental Portugal 16.2°C
31 Sintra Continental Portugal 16.2°C
32 Costa Nova Continental Portugal 16.3°C
33 Aveiro Continental Portugal 16.4°C
34 Praia de Mira Continental Portugal 16.4°C
35 Buarcos Continental Portugal 16.5°C
36 Figueira da Foz Continental Portugal 16.5°C
37 Furadouro Continental Portugal 16.5°C
38 Pedrogao Continental Portugal 16.5°C
39 Praia da Vieira Continental Portugal 16.5°C
40 Vieira de Leiria Continental Portugal 16.5°C
41 Caldas da Rainha Continental Portugal 16.5°C
42 Foz do Arelho Continental Portugal 16.5°C
43 Leiria Continental Portugal 16.5°C
44 Obidos Continental Portugal 16.5°C
45 Baleal Island Continental Portugal 16.6°C
46 Peniche Continental Portugal 16.6°C
47 Praia da Areia Branca Continental Portugal 16.6°C
48 Nazare Continental Portugal 16.6°C
49 Salir do Porto Continental Portugal 16.6°C
50 Sao Martinho do Porto Continental Portugal 16.6°C

Warmest 10 in Portugal in May

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

# Location May mean
1 Fora (Iheus Selvagens) Madeira 20.7°C
2 Porto do Moniz Madeira 20.3°C
3 Porto da Cruz Madeira 20.2°C
4 Campanario Madeira 20.0°C
5 Ponta do Sol Madeira 20.0°C
6 Vila De Porto Santo Madeira 20.0°C
7 Canico Madeira 19.9°C
8 Funchal Madeira 19.9°C
9 Machico Madeira 19.9°C
10 Faja da Ovelha Continental Portugal 19.8°C

More on this region