Southampton weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Excellent
Best time to visit: May – September
What is the weather like in Southampton in June?
In June, Southampton is mild: daytime highs average 19 °C, and nights cool down to about 12 °C. The sea averages 14.3 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is frequent, with about 10 rainy days and 57 mm in total. All in all, June is an excellent month for a holiday in Southampton.
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 16 h 30 min04:51 – 21:20
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 24 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/London
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %78 %
- Few rainy daysweight 30 %59 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in June
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Southampton in June: quick answers
Is Southampton hot in June?
No. In June, Southampton is mild: daytime highs average 19 °C and nights drop to about 12 °C.
Can you swim in Southampton in June?
Only if you don't mind cold water: in June the sea averages just 14.3 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Southampton in June?
Rain is frequent, with about 10 rainy days and 57 mm in total.
Southampton month by month
The whole year in SouthamptonAll destinations: United KingdomWhere to go in JuneSea temperature in June
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences