March weather forecast and climate
Belfast, United Kingdom

A close-up view of the Northern Ireland City Hall located in Belfast, United Kingdom
A close-up view of the Northern Ireland City Hall located in Belfast, United Kingdom

What is the temperature in March in Belfast?

In Belfast, in March, the average high-temperature is 9.5°C (49.1°F), and the average low-temperature is 2.9°C (37.2°F).

How many days does it rain in March in Belfast?

In Belfast, in March, it is raining for 14 days, with typically 67mm (2.6") of accumulated precipitation.

When is the sea coldest in Belfast?

Month with the coldest seawater in Belfast is March, with an average sea temperature of 8°C (46.4°F). Swimming in 8°C (46.4°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the water temperature in March in Belfast?

In Belfast, United Kingdom, in March, the average water temperature is 8°C (46.4°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
Average temperature in March - Belfast, United Kingdom
  • Average high temperature in March: 9.5°C

The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (7.1°C).

  • Average low temperature in March: 2.9°C

The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).

Average rainfall in March - Belfast, United Kingdom
  • Average rainfall in March: 67mm

The wettest month (with the highest rainfall) is October (89.6mm).
The driest month (with the lowest rainfall) is May (57.3mm).

Average rainfall days in March - Belfast, United Kingdom
  • Average rainfall days in March: 14 days

The month with the highest number of rainy days is January (14.8 days).
The month with the lowest number of rainy days is June (11.3 days).

Average sea temperature in March - Belfast, United Kingdom
  • Average sea temperature in March: 8°C

The best month for swimming (with the highest average sea temperature) is September (14.3°C).
The coldest month (with the lowest average sea temperature) is March (8°C).

Average daylight in March / Average sunshine in March - Belfast, United Kingdom
  • Average daylight in March: 11.9h

The month with the longest days is June (Average daylight: 17.2h).
The month with shortest days is December (Average daylight: 7.4h).

  • Average sunshine in March: 3.3h

The month with most sunshine is May (Average sunshine: 6.4h).
The month with least sunshine is December (Average sunshine: 1.5h).

Average UV index in March - Belfast, United Kingdom
  • Average UV index in March: 2

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).

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