Sea Temperature in Penarth in August

© Helen Kennedy

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

Penarth Climate and Swimming Opportunities in August

Penarth lies within the Wales in United Kingdom. The average daytime temperature in Penarth 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 Penarth 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 Penarth 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 Penarth 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 Penarth