Swansea weather in June 2025

Expect daytime maximum temperatures of 18°C in Swansea in June based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 78 mm of rainfall in the month.

  • 18°C maximum daytime temperature in June in Swansea18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 15 days with some rainfall in June in Swansea15
    15 days with some rainfall
  • 11°C minimum night-time temperature in June in Swansea11
    11°C min night temperature
  • 17 hours of daylight per day in June in Swansea17
    17 hours of daylight per day
  • No heat & humidity in June in Swansea0
    No heat & humidity
  • 78 mm monthly rainfall in June in Swansea78
    78 mm of monthly rainfall
  • UV (maximum) index 6 (High) in June in Swansea6
    6 (High) UV index
  • 14°C sea temperature in June in Swansea14
    14°C sea temperature

More about Swansea

Swansea by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Wales

Alfa Travel: Mystery break deal for 2025/2026

  • Book a mystery deal with Alfa travels
  • Choose your dates and length of stay
  • Enjoy destinations across the UK
Go to Alfa Travel deal >>

View all Alfa Travel offers

The June weather guide for Wales (Swansea) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Wales

How hot is it in Swansea in June?

Daytime temperatures usually reach 18°C in Swansea in June, falling to 11°C at night.

How sunny is it in Swansea in June?

There are normally 7 hours of bright sunshine each day in Swansea in June - that's 40% of daylight hours.

How warm is the sea around Swansea in June?

The average sea temperature around Swansea in June is 14°C.

Does it rain in Swansea in June?

There are usually 15 days with some rain in Swansea in June and the average monthly rainfall is 78mm.

Swansea June sunrise & sunset times

Browse the sunrise and sunset times for Swansea in June 2025. Select a month to view Swansea sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st June 2025 04:04 20:24
Sunday, 15th June 2025 03:57 20:35
Monday, 30th June 2025 04:02 20:37

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^