Swimming in Cardiff in may 2025: Average sea temperature in may and tide times in may 2025
Average sea temperature in Cardiff in may 2025.
In may, according to seasonal norms, the sea temperature in Cardiff is:
Minimum: 51°F
Average: 53°F
Maximum: 55°F
Other useful seasonal weather averages in may:
- Outside temperature: 50°F to 59°F
- Most common weather: "Partly Cloudy"
- The wind blows at 5mph
- It rains a total of 2.3in, over 4 day(s).
Should we swim in Cardiff in may?
No... The water temperature in Cardiff in may is freezing
You won't be able to swim in Cardiff in may! The water temperature is freezing, reaching as low as 51°F (and only 55°F at best)! Our advice: if you are going to Cardiff this month, plan to sightsee and forget the beach!
Note also that in may, the climate is tolerable with an average outside temperature of 55°F, 2.3in of precipitation (over 4 days) and 87.63 % humidity.
Water and normal seasonal temperatures in Cardiff in may
| May | |||
| Average sea temperature | 53°F | ||
| Minimum sea temperature | 51°F | ||
| Maximum sea temperature | 55°F | ||
| Average outside temperature | 56°F | ||
| Maximum outside temperature | 59°F | ||
| Minimum outside temperature | 50°F | ||
| Wind speed | 13.7mph | ||
| Wind temperature | 47°F | ||
| Precipitation | 2.3in | ||
| Number of days of rain | 4 jour(s) (11%) | ||
| Humidity | 88% | ||
| Visibility in kilometers | 9.19km | ||
| Cloud cover | 47% | ||
| Our opinion | freezing swimming |
Chart of the tides in may 2025
Tide times in may 2025 in Cardiff
Swim elsewhere in Wales in may
| City | Average T° | Min. T° | Max. T° | Our opinion | Pembrokeshire in may | 52°F | 55°F | freezing swimming | Swansea in may | 53°F | 55°F | freezing swimming | Barmouth in may | 52°F | 54°F | freezing swimming | Llandudno in may | 52°F | 54°F | freezing swimming |