Sea temperature in Italy
Live water temperatures and swimming conditions across 407 beaches on the Italy coast.
Best time to swim in Italy
The sea in Italy 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 13°C, when cold-water swimmers dominate the coast.
Italy sea temperature history
Long-term climatology for Italy shows an annual mean sea temperature of 19°C, ranging from 13°C in winter to 26°C at the summer peak.
The seasonal swing is roughly 13°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 Italy, 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.
Italy sea temperature: frequently asked questions
What is the warmest month to swim in Italy?
August is the warmest month in Italy, when the sea averages about 26°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Italy?
The coldest month in Italy is typically February, when the water averages around 13°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Italy without a wetsuit?
The main swimming season in Italy 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 Italy?
Outside peak summer the water in Italy 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 Italy?
The long-term annual mean sea temperature in Italy is about 19°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Italy?
The live reading at the top of this page shows the current sea temperature in Italy, 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 Italy
Region hubs with live sea temperatures, swim conditions and a beach directory.