Swimming in Belfast in march 2025: Average sea temperature in march and tide times in march 2025

Average sea temperature in Belfast in march 2025.

In march, according to seasonal norms, the sea temperature in Belfast is:

Minimum: 45°F

Average: 47°F

Maximum: 49°F

Other useful seasonal weather averages in march:

  • Outside temperature: 40°F to 49°F
  • Most common weather: "Cloudy"
  • The wind blows at 0.6mph
  • It rains a total of 3.9in, over 6 day(s).

Should we swim in Belfast in march?

No... The water temperature in Belfast in march is freezing

You won't be able to swim in Belfast in march! The water temperature is freezing, reaching as low as 45°F (and only 49°F at best)! Our advice: if you are going to Belfast this month, plan to sightsee and forget the beach!

Note also that in march, the climate is very bad with an average outside temperature of 44°F, 3.9in of precipitation (over 6 days) and 90.2 % humidity.

Water and normal seasonal temperatures in Belfast in march

March
Average sea temperature 47°F
Minimum sea temperature 45°F
Maximum sea temperature 49°F
Average outside temperature 45°F
Maximum outside temperature 49°F
Minimum outside temperature 40°F
Wind speed 14.9mph
Wind temperature 34°F
Precipitation 3.9in
Number of days of rain 6 jour(s)
(21%)
Humidity 91%
Visibility in kilometers 8.62km
Cloud cover 61%
Our opinion freezing swimming

Chart of the tides in march 2025

Tide times in march 2025 in Belfast

Swim elsewhere in Northern Ireland in march

City Average T° Max. T° Our opinion
Derry (Londonderry) in march48°F50°Ffreezing swimming
Portrush in march48°F49°Ffreezing swimming
Portstewart in march48°F49°Ffreezing swimming

Swim in Northern Ireland in march: sea temperature by city

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