March weather forecast
Belfast, United Kingdom

The Northern Ireland City Hall located in Belfast, United Kingdom
The Northern Ireland City Hall located in Belfast, United Kingdom

Weather in March

The first month of the spring, March, is also a frosty month in Belfast, United Kingdom, with an average temperature varying between 3.2°C (37.8°F) and 8.5°C (47.3°F).

Temperature

In March, the average high-temperature is essentially the same as in February - a still frosty 8.5°C (47.3°F). In March, in Belfast, the average low-temperature is 3.2°C (37.8°F).

Humidity

The average relative humidity in March is 84%.

Rainfall

In Belfast, it is raining for 17.9 days, with typically 48mm (1.89") of accumulated precipitation. In Belfast, United Kingdom, during the entire year, the rain falls for 220.2 days and collects up to 626mm (24.65") of precipitation.

Snowfall

Months with snowfall in Belfast are January through March, November and December. March is the last month it regularly snows. During 1.2 snowfall days, in March, Belfast aggregates 4mm (0.16") of snow. Throughout the year, there are 8.2 snowfall days, and 47mm (1.85") of snow is accumulated.

Sea temperature

With an average sea temperature of 8°C (46.4°F), March is the month with the coldest seawater in Belfast.
Note: Swimming in 8°C (46.4°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in March is 11h and 53min.
On the first day of the month, sunrise is at 7:13 am and sunset at 5:59 pm GMT. On the last day of March, sunrise is at 6:58 am and sunset at 7:57 pm BST.
Note: On Sunday, 26. March 2023, at 1:00 am, Daylight Saving Time starts, and the time zone changes from GMT to BST. Daylight Saving Time lasts until Sunday, 29. October 2023, at 2:00 am; consequently, the time zone reverts from BST to GMT.

Sunshine

In Belfast, the average sunshine in March is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in March interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in March in Belfast?

The average high-temperature, in March, in Belfast, is 8.5°C (47.3°F), while the average low-temperature is 3.2°C (37.8°F).

What is the average humidity in March in Belfast?

In Belfast, United Kingdom, the average relative humidity in March is 84%.

How much does it rain in Belfast in March?

In Belfast, United Kingdom, in March, it is raining for 17.9 days, with typically 48mm (1.89") of accumulated precipitation.

What is the last month it snows in Belfast?

March is the last month it regularly snows in Belfast, United Kingdom. During 1.2 snowfall days, in March, Belfast aggregates 4mm (0.16") of snow.

When is the sea coldest in Belfast?

With an average sea temperature of 8°C (46.4°F), March is the month with the coldest seawater in Belfast, United Kingdom.

How cold is the water in March in Belfast?

In March, the average sea temperature in Belfast, United Kingdom, 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.

What is the average length of the day in March in Belfast?

The average day length in March in Belfast is 11h and 53min.

When is the sunrise / sunset in March in Belfast?

On the first day of March in Belfast, sunrise is at 7:13 am and sunset at 5:59 pm GMT. On the last day of the month, sunrise is at 6:58 am and sunset at 7:57 pm BST.

When does Daylight Saving Time (DST) start in March in Belfast?

On Sunday, 26. March 2023, at 1:00 am, Daylight Saving Time starts, and the time zone changes from GMT to BST. DST ends on Sunday, 29. October 2023, at 2:00 am.

How long on average sun shines in March in Belfast?

In Belfast, United Kingdom, the average sunshine duration in March is 4.9h.

What is the month with the lowest UV index in Belfast?

The months with the lowest UV index in Belfast are January through March, November and December, with an average maximum UV index of 2.

What is the UV index intensity in March in Belfast?

The average daily maximum UV index in March in Belfast is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Belfast, United Kingdom

Average temperature in March - Belfast, United Kingdom
  • Average high temperature in March: 8.5°C

The warmest month (with the highest average high temperature) is July (16.9°C).
The month with the lowest average high temperature is January (6.8°C).

  • Average low temperature in March: 3.2°C

The month with the highest average low temperature is August (11.3°C).
The coldest month (with the lowest average low temperature) is February (2.8°C).

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Average pressure in March
Belfast, United Kingdom

Average pressure in March - Belfast, United Kingdom
  • Average pressure in March: 1013.2mbar

The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.3mbar).

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Average wind speed in March
Belfast, United Kingdom

Average wind speed in March - Belfast, United Kingdom
  • Average wind speed in March: 18.6km/h

The windiest month (with the highest average wind speed) is January (21.3km/h).
The calmest months (with the lowest average wind speed) are June and July (13.7km/h).

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Average humidity in March
Belfast, United Kingdom

Average humidity in March - Belfast, United Kingdom
  • Average humidity in March: 84%

The months with the highest relative humidity are January and December (88%).
The months with the lowest relative humidity are April and May (83%).

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Average rainfall in March
Belfast, United Kingdom

Average rainfall in March - Belfast, United Kingdom
  • Average rainfall in March: 48mm

The wettest month (with the highest rainfall) is August (72mm).
The driest month (with the least rainfall) is May (38mm).

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Average rainfall days in March
Belfast, United Kingdom

Average rainfall days in March - Belfast, United Kingdom
  • Average rainfall days in March: 17.9 days

The month with the highest number of rainy days is August (23 days).
The month with the least rainy days is April (16.1 days).

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Average snowfall in March
Belfast, United Kingdom

Average snowfall in March - Belfast, United Kingdom
  • Average snowfall in March: 4mm

The month with the highest snowfall is February (25mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in March
Belfast, United Kingdom

Average snowfall days in March - Belfast, United Kingdom
  • Average snowfall days in March: 1.2 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in March
Belfast, United Kingdom

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).

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Average daylight in March /
Average sunshine in March
Belfast, United Kingdom

Average daylight in March / Average sunshine in March - Belfast, United Kingdom
  • Average daylight in March: 11h and 53min

The month with the longest days is June (Average daylight: 17h and 11min).
The month with the shortest days is December (Average daylight: 7h and 22min).

  • Average sunshine in March: 4h and 54min

The month with the most sunshine is June (Average sunshine: 7h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).

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Average sunshine days in March
Belfast, United Kingdom

Average sunshine days in March - Belfast, United Kingdom
  • Average sunshine days in March: 9.2 days

The month with the most sunshine days is April (11.5 days).
The month with the least sunshine days is August (5.6 days).

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Average UV index in March
Belfast, United Kingdom

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

The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in March
Belfast, United Kingdom

Average cloud cover in March - Belfast, United Kingdom
  • Average cloud cover in March: 60

The months with the most cloud cover are January and February (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 55).

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Average visibility in March
Belfast, United Kingdom

Average visibility in March - Belfast, United Kingdom
  • Average visibility in March: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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