Platja Gran — Sea temperature now
Town beach beneath Tossa's medieval walls.
Warm water with a light chop and a light breeze — great swimming conditions.
Location
Platja Gran on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Monthly sea temperature averages
Typical year-round water temperature, based on regional climatology.
Best time to swim in Platja Gran
The sea in Platja Gran 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.
Platja Gran sea temperature history
Long-term climatology for Platja Gran 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 Platja Gran, 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.
Platja Gran sea temperature: frequently asked questions
What is the warmest month to swim in Platja Gran?
August is the warmest month in Platja Gran, when the sea averages about 26°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Platja Gran?
The coldest month in Platja Gran is typically February, when the water averages around 14°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Platja Gran without a wetsuit?
The main swimming season in Platja Gran 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 Platja Gran?
Outside peak summer the water in Platja Gran 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 Platja Gran?
The long-term annual mean sea temperature in Platja Gran is about 19°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Platja Gran?
The live reading at the top of this page shows the current sea temperature in Platja Gran, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jun – Jul – Aug – Sep – Oct
| Month | Sea | Comfort |
|---|---|---|
| Jan | 15°C | Bracing |
| Feb | 14°C | Bracing |
| Mar | 15°C | Bracing |
| Apr | 16°C | Bracing |
| May | 18°C | Pleasant |
| Jun | 22°C | Warm |
| Jul | 25°C | Warm |
| Aug ⭐ | 26°C | Hot |
| Sep | 24°C | Warm |
| Oct | 21°C | Pleasant |
| Nov | 18°C | Pleasant |
| Dec | 16°C | Bracing |