Sea temperature in Spain
Live water temperatures and swimming conditions across 417 beaches on the Spain coast.
Best time to swim in Spain
The sea in Spain peaks in August, when the water averages around 26°C.
The main swimming season runs from June – October, when surface temperatures stay comfortable for extended sessions.
On average, 5 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like May and November are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 16°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically February at around 14°C, when cold-water swimmers dominate the coast.
Spain sea temperature history
Long-term climatology for Spain shows an annual mean sea temperature of 19°C, ranging from 14°C in winter to 26°C at the summer peak.
The seasonal swing is roughly 12°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Spain, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Values are area averages; individual beaches vary by exposure and depth.
Spain sea temperature: frequently asked questions
What is the warmest month to swim in Spain?
August is the warmest month in Spain, when the sea averages about 26°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Spain?
The coldest month in Spain is typically February, when the water averages around 14°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Spain without a wetsuit?
The main swimming season in Spain runs from June – October — about 5 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Spain?
Outside peak summer the water in Spain drops toward 16°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Spain?
The long-term annual mean sea temperature in Spain is about 19°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Spain?
The live reading at the top of this page shows the current sea temperature in Spain, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Coastal regions of Spain
Region hubs with live sea temperatures, swim conditions and a beach directory.