Wales weather in July 2025

Expect 20°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Wales in July. Check more long-term weather averages for Wales in July before you book your next holiday to Wales in 2025/2026.

  • 20°C maximum daytime temperature in July in Wales (Cardiff)20
    20°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in July in Wales (Cardiff)13
    13 days with some rainfall
  • 12°C minimum night-time temperature in July in Wales (Cardiff)12
    12°C min night temperature
  • 16 hours of daylight per day in July in Wales (Cardiff)16
    16 hours of daylight per day
  • No heat & humidity in July in Wales (Cardiff)0
    No heat & humidity
  • 66 mm monthly rainfall in July in Wales (Cardiff)66
    66 mm of monthly rainfall
  • UV (maximum) index 6 (High) in July in Wales (Cardiff)6
    6 (High) UV index
  • 17°C sea temperature in July in Wales (Cardiff)17
    17°C sea temperature

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The July weather guide for Wales (Cardiff) 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.

Top Wales destinations

Below are average maximum temperatures at popular countries, regions and places in Wales in July. Select a holiday destination to see more weather parameters.

All Wales regions

All Wales destinations

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

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More about Wales

How hot is it in Wales in July?

Daytime temperatures usually reach 20°C in Cardiff, Wales in July, falling to 12°C at night.

How sunny is it in Wales in July?

There are normally 6 hours of bright sunshine each day in Cardiff, Wales in July - that's 39% of daylight hours.

How warm is the sea around Wales in July?

The average sea temperature around Cardiff, Wales in July is 17°C.

Does it rain in Wales in July?

There are usually 13 days with some rain in Cardiff, Wales in July and the average monthly rainfall is 66mm.

Wales July sunrise & sunset times

Browse the sunrise and sunset times for Wales in July 2025. Select a month to view Wales sunrise and sunset times for the next 12 months. The Wales sunrise and sunset times shown below are for Cardiff.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:00 20:33
Wednesday, 16th July 2025 04:15 20:22
Thursday, 31st July 2025 04:35 20:02

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