Average monthly water temperature in Belfast, Ireland
On this page you find the mean water temperature over the year in Belfast (County Antrim), Ireland. Discover the unique water temperature patterns, from its warmest to its coolest months.
Water in Belfast maintains a consistently cool profile. The warmest month, August, has an average temperature of 13°C (55°F).
The coldest water temperature month is February, averaging 7°C (45°F). These conditions are ideal for enjoying peaceful, less crowded water activities.
Belfast Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Belfast - and find the best time to visit.
Belfast 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Belfast climate overview or explore weather in Ireland.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Go to Dingle in Ireland
Dolphins, Whales and breathtaking views. The colorful fishing village Dingle in Ireland has it all and this town is a must for your bucket list.
An Irish adventure like no other in Killarney National Park
Head down to the South West part of the country, County Kerry, to the small town of Killarney. If you want to experience what Ireland is really all about
Horseback riding in Ireland
Ireland is the most ideal place in the world for horseback riding. Combine this with the most hospitable people you will ever encounter and you have an unforgettable dream trip to add to your bucket list.