Sea temperature and swimming season in Spain

When the sea is warm enough to swim in 21 coastal cities in Spain.

City	Warmest	Coldest	Swimming season
Barcelona	26.8°C Aug	13.5°C Feb	Jun – Oct (5 months)
Valencia	27.4°C Aug	14.2°C Feb	May – Nov (7 months)
Málaga	24.4°C Aug	15.4°C Feb	Jun – Oct (5 months)
Palma	27.6°C Aug	14.7°C Feb	May – Nov (7 months)
Las Palmas de Gran Canaria	23.8°C Sep	19.5°C Mar	all year
Alicante	27.4°C Aug	14.7°C Feb	May – Nov (7 months)
Bilbao	22.6°C Aug	13.1°C Feb	Jun – Oct (5 months)
Vigo	17.4°C Sep	13.7°C Feb	never comfortable
Gijón	21.2°C Aug	13.2°C Mar	Jul – Sep (3 months)
A Coruña	18.0°C Aug	13.3°C Mar	never comfortable
Santa Cruz de Tenerife	24.3°C Sep	19.7°C Mar	all year
Almería	25.9°C Aug	15.4°C Feb	Jun – Oct (5 months)
Donostia / San Sebastián	23.1°C Aug	12.7°C Jan	Jun – Oct (5 months)
Santander	22.3°C Aug	13.1°C Mar	Jun – Oct (5 months)
Castelló de la Plana	27.6°C Aug	13.9°C Feb	May – Nov (7 months)
Marbella	22.7°C Aug	15.6°C Feb	Jun – Oct (5 months)
Algeciras	21.7°C Aug	15.7°C Mar	Jul – Oct (4 months)
Cadiz	23.7°C Aug	15.6°C Feb	May – Nov (7 months)
Melilla	25.0°C Aug	15.9°C Feb	May – Nov (7 months)
Torrevieja	27.3°C Aug	14.8°C Feb	May – Nov (7 months)
Sanlúcar de Barrameda	23.7°C Aug	15.6°C Feb	May – Nov (7 months)