Belfast weather in March

Weather in Belfast: March


	Average day temperature:	47.8°F
	Average night temperature:	39.4°F

	Sea water temperature:	45.1°F

	Number of sunny days:	4 days
	Day length:	10.8 - 13.0 hours

	Number of rainy days:	5 days
	Precipitation totals:	2.2 in.

more information

14 days
forecast

Belfast

sea water
temperature

Belfast

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2025

2024

2023

Day temperature

Night temperature

The highest day temperature during March of 2025 was 56°F. At the same time the lowest night temperature was 31°F. Daily and nightly averages during March were 49.8°F and 39.4°F.

Show year:

2025

2024

2023

The average sea water temperature in March of 2025 was 45.9°F. The highest and lowest sea temperatures during the month were 47.1°F and 45.0°F.

	Sunny days
	Partly cloudy days
	Cloudy days

13%

28%

59%

Mostly all days in March are cloudy but sunny and partly cloudy days are also possible.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

0.6

1.3

1.9

2.6

3.2

3.9

4.5

2.6

2.3

2.2

3.6

3.8

3.1

2.2

2.0

2.7

2.2

2.6

2.3

2.2

3.6

3.8

3.1

2.2

2.0

2.4

2.7

2.2

Precipitation total value in Belfast in March is 2.4 in. Other months of the year show relatively similar values.

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

2.3

4.6

6.9

9.2

11.5

13.8

16.0

12.1

11.2

11.1

9.9

9.2

8.3

8.9

9.1

10.1

13.4

11.3

12.1

11.2

11.1

9.9

9.2

8.3

8.9

9.1

10.1

10.8

13.4

11.3

The average wind speed value in March is 10.8 mph

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

0.0

1.2

2.3

3.5

4.7

5.8

7.0

8.2

9.4

2.0

2.8

3.2

4.8

5.3

5.4

6.8

5.6

5.3

2.7

3.0

2.0

2.8

3.2

4.8

5.3

5.4

6.8

5.6

5.3

4.3

2.7

3.0

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in March is: 4.3.