March weather forecast
Southampton, United Kingdom

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A lovely water fountain in front of the City Art Gallery building in Southampton, United Kingdom
A lovely water fountain in front of the City Art Gallery building in Southampton, United Kingdom

Weather in March

The first whispers of spring become noticeable in March. Temperature ranges escalate to between 4.1°C (39.4°F) and 10.4°C (50.7°F) showcasing a positional shift in the weather pattern. Wind speed drops to 17.5km/h (10.9mph), marking a calmer atmosphere as winter's gusty reign concludes. With increased sunshine hours and longer daylight duration, March becomes a harbinger of the sunnier days ahead. Nature begins to break free from its frosty chains, paving the way for the blooming season to commence.

Temperature

As Southampton steps into March, the average high-temperature holds at a cool 10.4°C (50.7°F), hinting at a minor fluctuation from the prior month. In the month of March, the temperature in Southampton generally rests at an average low of 4.1°C (39.4°F).

Humidity

In March, the average relative humidity in Southampton is 83%.

Rainfall

In Southampton, in March, during 13 rainfall days, 31mm (1.22") of precipitation is typically accumulated. Throughout the year, in Southampton, there are 184.9 rainfall days, and 482mm (18.98") of precipitation is accumulated.

Snowfall

Months with snowfall in Southampton are January through March, November and December. March is the last month it regularly snows. During 0.3 snowfall days, in March, Southampton aggregates 1mm (0.04") of snow. In Southampton, during the entire year, snow falls for 4.5 days and aggregates up to 20mm (0.79") of snow.

Sea temperature

March is the month with the coldest seawater in Southampton, with an average sea temperature of 8.6°C (47.5°F).
Note: Dipping into 8.6°C (47.5°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.

Daylight

In Southampton, the average length of the day in March is 11h and 55min.
On the first day of March, sunrise is at 6:48 am and sunset at 5:47 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 6:37 pm GMT.

Sunshine

In March, the average sunshine is 5.8h.

UV index

The average daily maximum UV index in March is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In March, the maximum UV index of 3 translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. 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. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

What is the temperature in March in Southampton?

In Southampton, in March, the average high-temperature is 10.4°C (50.7°F), and the average low-temperature is 4.1°C (39.4°F).

What is the average humidity in March in Southampton?

In March, the average relative humidity is 83%.

How much does it rain in Southampton in March?

In Southampton, in March, during 13 rainfall days, 31mm (1.22") of precipitation is typically accumulated.

What is the last month it snows in Southampton?

March is the last month it regularly snows in Southampton. During 0.3 snowfall days, in March, Southampton aggregates 1mm (0.04") of snow.

What month is the sea coldest in Southampton?

March is the month with the coldest seawater, with an average sea temperature of 8.6°C (47.5°F).

What is the water temperature in March in Southampton?

In Southampton, in March, the average water temperature is 8.6°C (47.5°F). Swimming in 8.6°C (47.5°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.

How many hours of daylight does Southampton have in March?

In March, the average day length in Southampton is 11h and 55min.

What time are sunrise and sunset in March in Southampton?

On the first day of March in Southampton, sunrise is at 6:48 am and sunset at 5:47 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 6:37 pm GMT.

How long on average sun shines in March in Southampton?

In March, the average sunshine duration in Southampton is 5.8h.

How high is the UV index in March in Southampton?

In Southampton, United Kingdom, the average daily maximum UV index in March is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Southampton, United Kingdom

Average temperature in March - Southampton, United Kingdom
  • Average high temperature in March: 10.4°C

The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (7.4°C).

  • Average low temperature in March: 4.1°C

The month with the highest average low temperature is August (13.3°C).
The coldest months (with the lowest average low temperature) are January and February (3.3°C).

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Average pressure in March
Southampton, United Kingdom

Average pressure in March - Southampton, United Kingdom
  • Average pressure in March: 1015.7mbar

The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).

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Average wind speed in March
Southampton, United Kingdom

Average wind speed in March - Southampton, United Kingdom
  • Average wind speed in March: 17.5km/h

The windiest month (with the highest average wind speed) is February (19.3km/h).
The calmest month (with the lowest average wind speed) is July (14km/h).

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Average humidity in March
Southampton, United Kingdom

Average humidity in March - Southampton, United Kingdom
  • Average humidity in March: 83%

The months with the highest relative humidity are January and December (87%).
The months with the lowest relative humidity are July and August (79%).

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Average rainfall in March
Southampton, United Kingdom

Average rainfall in March - Southampton, United Kingdom
  • Average rainfall in March: 31mm

The wettest month (with the highest rainfall) is December (61mm).
The driest month (with the least rainfall) is April (27mm).

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Average rainfall days in March
Southampton, United Kingdom

Average rainfall days in March - Southampton, United Kingdom
  • Average rainfall days in March: 13 days

The month with the highest number of rainy days is November (17.5 days).
The month with the least rainy days is September (12.3 days).

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Average snowfall in March
Southampton, United Kingdom

Average snowfall in March - Southampton, United Kingdom
  • Average snowfall in March: 1mm

The month with the highest snowfall is December (8mm).
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
Southampton, United Kingdom

Average snowfall days in March - Southampton, United Kingdom
  • Average snowfall days in March: 0.3 days

The month with the highest number of snowfall days is January (1.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in March
Southampton, United Kingdom

Average sea temperature in March - Southampton, United Kingdom
  • Average sea temperature in March: 8.6°C

The best month for swimming (with the highest average sea temperature) is September (17.3°C).
The coldest month (with the lowest average sea temperature) is March (8.6°C).

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

Average daylight in March / Average sunshine in March - Southampton, United Kingdom
  • Average daylight in March: 11h and 5min

The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).

  • Average sunshine in March: 5h and 5min

The month with the most sunshine is July (Average sunshine: 8h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

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Average sunshine days in March
Southampton, United Kingdom

Average sunshine days in March - Southampton, United Kingdom
  • Average sunshine days in March: 14 days

The month with the most sunshine days is March (14 days).
The month with the least sunshine days is November (8.9 days).

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Average UV index in March
Southampton, United Kingdom

Average UV index in March - Southampton, United Kingdom
  • Average UV index in March: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and November (UV index 2).

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Average cloud cover in March
Southampton, United Kingdom

Average cloud cover in March - Southampton, United Kingdom
  • Average cloud cover in March: 52

The month with the most cloud cover is November (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 44).

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Average visibility in March
Southampton, United Kingdom

Average visibility in March - Southampton, 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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Southampton, United Kingdom

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