Freshwater Bay — Sea temperature now
Isle of Wight family beach.
Fresh water with a light chop and a light breeze — fresh conditions — a wetsuit is recommended.
Location
Freshwater Bay 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 Freshwater Bay
The sea in Freshwater Bay peaks in August, when the water averages around 17°C.
On average, 0 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Outside peak season the water drops toward 9°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically February at around 8°C, when cold-water swimmers dominate the coast.
Freshwater Bay sea temperature history
Long-term climatology for Freshwater Bay shows an annual mean sea temperature of 12°C, ranging from 8°C in winter to 17°C at the summer peak.
The seasonal swing is roughly 9°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 Freshwater Bay, 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.
Freshwater Bay sea temperature: frequently asked questions
What is the warmest month to swim in Freshwater Bay?
August is the warmest month in Freshwater Bay, when the sea averages about 17°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Freshwater Bay?
The coldest month in Freshwater Bay is typically February, when the water averages around 8°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Freshwater Bay without a wetsuit?
The sea in Freshwater Bay rarely climbs above 20°C, so a wetsuit is recommended year-round for anything longer than a quick dip.
Do I need a wetsuit in Freshwater Bay?
Outside peak summer the water in Freshwater Bay drops toward 9°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 Freshwater Bay?
The long-term annual mean sea temperature in Freshwater Bay is about 12°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Freshwater Bay?
The live reading at the top of this page shows the current sea temperature in Freshwater Bay, 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
| Month | Sea | Comfort |
|---|---|---|
| Jan | 9°C | Cold |
| Feb | 8°C | Cold |
| Mar | 8°C | Cold |
| Apr | 9°C | Cold |
| May | 11°C | Cold |
| Jun | 14°C | Bracing |
| Jul | 16°C | Bracing |
| Aug ⭐ | 17°C | Bracing |
| Sep | 16°C | Bracing |
| Oct | 14°C | Bracing |
| Nov | 12°C | Cold |
| Dec | 10°C | Cold |