Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The onset of May marks an average high-temperature of a still refreshing 15.7°C (60.3°F), hardly differing from April's 13.3°C (55.9°F). May brings Southampton a consistent average low-temperature of 7.8°C (46°F).Humidity
In May, the average relative humidity is 80%.Rainfall
In Southampton, United Kingdom, during May, the rain falls for 15.8 days and regularly aggregates up to 31mm (1.22") of precipitation. In Southampton, during the entire year, the rain falls for 184.9 days and collects up to 482mm (18.98") of precipitation.Snowfall
April through October are months without snowfall.Sea temperature
In Southampton, the average seawater temperature in May is 11.5°C (52.7°F).Note: With an efficient thermal swimsuit, one can navigate 11.5°C (52.7°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 13°C (55.4°F) feels chilly.
Daylight
The average length of the day in May is 15h and 33min.On the first day of May, sunrise is at 5:37 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 4:57 am and sunset at 9:09 pm BST.
Sunshine
In May, the average sunshine is 8.1h.UV index
In Southampton, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 4 in May translates into these instructions:
Take necessary precautions - Defending against sun damage is advocated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What are May temperatures in Southampton?
What is the average humidity in May in Southampton?
How much does it rain in Southampton in May?
When it does not snow in Southampton?
What is the water temperature in May in Southampton?
How many hours of daylight does Southampton have in May?
When is the sunrise / sunset in May in Southampton?
How many hours of sunshine does Southampton have in May?
What is the UV index reading in May in Southampton?
Average temperature in May
Southampton, United Kingdom
- Average high temperature in May: 15.7°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 May: 7.8°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).
Average pressure in May
Southampton, United Kingdom
- Average pressure in May: 1016.9mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed in May
Southampton, United Kingdom
- Average wind speed in May: 14.4km/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).
Average humidity in May
Southampton, United Kingdom
- Average humidity in May: 80%
The months with the highest relative humidity are January and December (87%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in May
Southampton, United Kingdom
- Average rainfall in May: 31mm
The wettest month (with the highest rainfall) is December (61mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in May
Southampton, United Kingdom
- Average rainfall days in May: 15.8 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).
Average snowfall in May
Southampton, United Kingdom
- Average snowfall in May: 0mm
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).
Average snowfall days in May
Southampton, United Kingdom
- Average snowfall days in May: 0 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).
Average sea temperature in May
Southampton, United Kingdom
- Average sea temperature in May: 11.5°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).
Average daylight in May /
Average sunshine in May
Southampton, United Kingdom
- Average daylight in May: 15h and 4min
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 May: 8h and 1min
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).
Average sunshine days in May
Southampton, United Kingdom
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is March (14 days).
The month with the least sunshine days is November (8.9 days).
Average UV index in May
Southampton, United Kingdom
- Average UV index in May: 4
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).
Average cloud cover in May
Southampton, United Kingdom
- Average cloud cover in May: 46
The month with the most cloud cover is November (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 44).
Average visibility in May
Southampton, United Kingdom
- Average visibility in May: 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).
Southampton, United Kingdom
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