Average monthly water temperature in Southampton, the United Kingdom
On this page you find the mean water temperature over the year in Southampton (Hampshire), the United Kingdom. Take a closer look at the water temperature patterns and what they mean for swimming and recreation.
Water temperatures in Southampton stay on the cooler side throughout the year. The warmest month, September, averages 17°C (63°F).
The coldest water temperature month is March, averaging 9°C (48°F). These cooler conditions are not the best for swimming enthusiasts.
Southampton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Southampton - and find the best time to visit.
Southampton 3-Day Forecast
Temperature Rainfall Sunshine Humidity Water Temp
See the full Southampton climate overview or explore weather in the United Kingdom.
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