Swansea weather in July 2025

Expect daytime maximum temperatures of 20°C in Swansea, Wales in July based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 75 mm of rainfall in the month.

  • 20°C maximum daytime temperature in July in Swansea20
    20°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in July in Swansea13
    13 days with some rainfall
  • 13°C minimum night-time temperature in July in Swansea13
    13°C min night temperature
  • 16 hours of daylight per day in July in Swansea16
    16 hours of daylight per day
  • No heat & humidity in July in Swansea0
    No heat & humidity
  • 75 mm monthly rainfall in July in Swansea75
    75 mm of monthly rainfall
  • UV (maximum) index 6 (High) in July in Swansea6
    6 (High) UV index
  • 16°C sea temperature in July in Swansea16
    16°C sea temperature

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The July 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)

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More about Wales

How hot is it in Swansea in July?

Daytime temperatures usually reach 20°C in Swansea in July, falling to 13°C at night.

How sunny is it in Swansea in July?

There are normally 6 hours of bright sunshine each day in Swansea in July - that's 38% of daylight hours.

How warm is the sea around Swansea in July?

The average sea temperature around Swansea in July is 16°C.

Does it rain in Swansea in July?

There are usually 13 days with some rain in Swansea in July and the average monthly rainfall is 75mm.

Swansea July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:02 20:37
Wednesday, 16th July 2025 04:17 20:26
Thursday, 31st July 2025 04:38 20:05

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