Sea Temperature in Cardiff in August

© Sebastian PRUS

Complete information on the sea temperature range in the Celtic Sea in Cardiff in August. Historical daily data. Climate details for August. Tips on swimming conditions and beach relaxation in Cardiff. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Cardiff Climate and Swimming Opportunities in August

Cardiff lies within the Wales in United Kingdom. The average daytime temperature in Cardiff in August is 19°C (67°F), while the nighttime average is 13°C (55°F). There are typically 13 rainy days during the month, with a total precipitation of 85 mm (3.3 inches). The daylight duration in August in Cardiff is 14 hours, with an average of 6 hours of sunshine per day. The average wind speed in August is 13 km/h (8 mph), and the humidity level is around 83%.

The water temperature in Cardiff in August ranges from 17°C to 18°C (63°F to 64°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 18°C (64°F) by mid-August and reaching 18°C (64°F) in the last ten days. Overall, the average sea temperature in Cardiff for August is 18°C (64°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Frequently Asked Questions About Water Temperatures in August in Cardiff