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Wales Weather July

To help you choose the best time to travel, you can find climate data below on the weather in Wales in July.

Wales Weather July:CardiffSwansea
day temperatureaverage daily high+21.7°C+19.6°C
night temperatureaverage daily low+13.1°C+13.9°C
sea temperaturesea temperature+15.5°C+15.8°C
Daylight hoursdaylight hours16.8h16.8h
sunny hours per daysunny/overcast hours6.4/10.4h
average monthly precipitationaverage monthly precipitation78 mm72 mm

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Temperature in Wales

The average daily maximum in July is +21.7 — +19.6°C, and the minimum +13.1 — +13.9°C.

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Sea temperature

The average monthly temperature in the Bristol Channel on the beaches of Cardiff in July is +15.5 degrees and on the beaches of Swansea +15.8 degrees.

The water is cold and only apt for bathing for the most hardy people.

Wales climate by month


The normal amount of precipitation for July is from 72 to 78 mm, which may cause a change of plans on certain days.