Monthly weather forecast and climate
Southampton, United Kingdom

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

What is the coldest month in Southampton?

January is the coldest month, with an average high-temperature of 8.4°C (47.1°F) and an average low-temperature of 2.9°C (37.2°F).

How many days does it rain in Southampton?

In Southampton, during the entire year, the rain falls for 114.8 days and collects up to 779.6mm (30.7") of precipitation.

When is the sea coldest in Southampton?

Month with the coldest seawater is March, with an average sea temperature of 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.

What is the warmest month in Southampton?

The warmest month in Southampton, United Kingdom, is July, with an average high-temperature of 22.4°C (72.3°F) and an average low-temperature of 13.7°C (56.7°F).

What is the driest month in Southampton?

July is the month with the least rainfall in Southampton. Rain falls for 7.4 days and accumulates 42mm (1.7") of precipitation.

What is the month with the warmest sea water in Southampton?

September is the month with the warmest seawater in Southampton, with an average sea temperature of 17.3°C (63.1°F). For swimming, a surface water temperature of 17.3°C (63.1°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the wettest month in Southampton?

November is the month with the most rainfall in Southampton, United Kingdom. Rain falls for 11.5 days and accumulates 94mm (3.7") of precipitation.
Average temperature - Southampton, United Kingdom
Average rainfall - Southampton, United Kingdom

The wettest month (with the highest rainfall) is November (94mm).
The driest month (with the lowest rainfall) is July (42mm).

Average rainfall days - Southampton, United Kingdom

The month with the highest number of rainy days is January (12.2 days).
The month with the lowest number of rainy days is July (7.4 days).

Average sea temperature - Southampton, United Kingdom

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).

Average daylight / Average sunshine - Southampton, United Kingdom
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