Average monthly water temperature in Castlereagh, the United Kingdom

On this page you find the mean water temperature over the year in Castlereagh (Down County), the United Kingdom. Discover when the water is at its warmest and coolest, perfect for planning your visit.

Data from: Belfast, Ireland (24 KM, 15 Miles).

Water temperatures in Castlereagh stay on the cooler side throughout the year. The warmest month, August, averages 13°C (55°F).

The coldest water temperature month is February, averaging 7°C (45°F). These cooler conditions are not the best for swimming enthusiasts.

Castlereagh 3-Day Forecast

10-Day Forecast

More climate data for Castlereagh

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Castlereagh climate overview or explore weather in the United Kingdom.

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