Southampton weather in May
Long-run climate averages for Southampton, England in May, plus what the forecast models say for the days ahead.
In May, Southampton averages 17°C by day and 9°C at night. The wettest month is usually March.
May in Southampton averages a daytime high of 17°C and an overnight low of 9°C, which reads as mild for this part of the world. Across the whole year Southampton sees roughly 1058 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like - for that, see the live Southampton forecast with every model compared and how much they currently agree.
Southampton weather by month
what to expect in Southampton through the yearHere is Southampton's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Southampton by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Southampton, scoring 85/100 on our CheckWeather Score, ahead of the Met Office at 84. See the full UK accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Southampton in May?
Is May a good time to visit Southampton?
Does it rain a lot in Southampton in May?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .