Swimming in Cardiff in august 2025: Average sea temperature in august and tide times in august 2025
Average sea temperature in Cardiff in august 2025.
In august, according to seasonal norms, the sea temperature in Cardiff is:
Minimum: 61°F
Average: 63°F
Maximum: 64°F
Other useful seasonal weather averages in august:
- Outside temperature: 58°F to 67°F
- Most common weather: "Partly Cloudy"
- The wind blows at 8.7mph
- It rains a total of 2.8in, over 4 day(s).
Should we swim in Cardiff in august?
No... The water temperature in Cardiff in august is cold
Swimming in Cardiff in august is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average sea temperature of 63°F (minimum: 61°F - maximum: 64°F).
Note also that in august, the climate is good with an average outside temperature of 62°F, 2.8in of precipitation (over 4 days) and 90.17 % humidity.
Water and normal seasonal temperatures in Cardiff in august
| August | |||
| Average sea temperature | 63°F | ||
| Minimum sea temperature | 61°F | ||
| Maximum sea temperature | 64°F | ||
| Average outside temperature | 63°F | ||
| Maximum outside temperature | 67°F | ||
| Minimum outside temperature | 58°F | ||
| Wind speed | 13.1mph | ||
| Wind temperature | 58°F | ||
| Precipitation | 2.8in | ||
| Number of days of rain | 4 jour(s) (13%) | ||
| Humidity | 91% | ||
| Visibility in kilometers | 8.99km | ||
| Cloud cover | 50% | ||
| Our opinion | cold swimming |
Chart of the tides in august 2025
Tide times in august 2025 in Cardiff
Swim elsewhere in Wales in august
| City | Average T° | Min. T° | Max. T° | Our opinion | Pembrokeshire in august | 62°F | 64°F | cold swimming | Swansea in august | 63°F | 64°F | cold swimming | Barmouth in august | 60°F | 62°F | cold swimming | Llandudno in august | 62°F | 63°F | cold swimming |