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Climate - Southampton (England)


Average weather, temperature, rainfall, sunshine hours

Flag - England

Southampton, where it's located


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Climate chart - Southampton
The climate of Southampton is oceanic, with quite cold, rainy winters and mild, relatively rainy summers.
The city is located in the south of England, in the county of Hampshire, and overlooks the so-called Southampton Water, an estuary into which sea waters penetrate, and which then opens into a stretch of sea called The Solent, beyond which we find the Isle of Wight.
To the west of the city, we find instead the New Forest National Park.
Winter is not very cold, but the sky is often cloudy, the humidity is high and there are periods when the wind blows moderate or strong. The rains are frequent.
Snow is rare, but can occasionally occur. On the coldest nights of the year, the temperature generally drops to around -5 °C (23 °F), but can sometimes drop to lower values. The temperature dropped to -10 °C (14 °F) in January 1987.
In summer, temperatures are generally mild or cool. It can also rain, albeit a little less often than in winter.
However, hot periods cannot be ruled out, usually of short duration. The temperature reached 35 °C (95 °F) in June 1976 and in August 1990.

Southampton

Best Time


The best time to visit Southampton is the summer, from June to August, since it is the warmest of the year, although even in this season, it's better to bring a sweatshirt, a light jacket and an umbrella. The month of June is a bit cooler, so you may prefer July and August. September is a good month as well: it's a bit rainier than the summer months, but the temperatures are still pleasant, especially in the first part.
As previously mentioned, the sea is very cool even in summer, however, on sunny days, when the breeze is not too cool, you can sunbathe.

Southampton - Climate data


In Southampton, the average temperature of the coldest month (January) is of 6.0 °C (42.7 °F), that of the warmest month (July) is of 18.3 °C (64.9 °F). Here are the average temperatures.
Southampton - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January396384842.7
February396374842.9
March4127.9405346.2
April61510.4435850.7
May91813.6496456.5
June122116.3546961.3
July142318.3577364.9
August142318.2577364.8
September122015.8536860.5
October91612.5486154.5
November6128.9425448
December496.4384943.5
Year815.511.746.459.853

In Southampton, precipitation amounts to 820 millimeters (32.3 inches) per year: so, it is at an intermediate level. It ranges from 45 mm (1.8 in) in the driest months (May, July) to 100 mm (3.9 in) in the wettest one (November). Here is the average precipitation.
Southampton - Average precipitation
MonthMillimetersInchesDays
January903.512
February652.610
March552.210
April5029
May451.88
June552.28
July451.88
August602.48
September602.49
October953.712
November1003.913
December953.713
Year82032.3120

At Southampton, the sea temperature ranges from 8.5 °C (47 °F) in February, March to 17 °C (63 °F) in August, September. Here are the average sea temperatures.
Southampton - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January9.549
February8.547
March8.547
April9.549
May1152
June13.556
July15.560
August1762
September1762
October15.560
November13.556
December11.553
Year12.654.7

In Southampton, there are on average around 1705 sunshine hours per year. Here are the average hours of sunshine per day.
Southampton - Sunshine hours
MonthAverageTotal
January265
February385
March4125
April6180
May7215
June7210
July7225
August6.5205
September5150
October3.5115
November2.575
December255
Year4.71705

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