Cardiff Sea Temperature

(Today) 2024

8.9°C / 48.1°F

The water will feel cold. All but the most ardent watersports enthusiasts will be thinking of packing up for the winter. If not we'd suggest a thick 5/4mm wetsuit along with some boots and a hood.

*Live data from Weston Bay: 8.5°C / 47.3°F

Current weather

12°C / 53°F
(fog)
Partly cloudy
Wind
10 mph
Humidity
95%

The measurements for the water temperature in Cardiff, Wales are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Cardiff water temperature derived from many years of historical sea surface temperature data.

Cardiff average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Cardiff
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.2 7.3 7.4 8.2 10.2 11.9 14 16 15.6 14.2 12.3 9.5
Max °C 10.4 9.8 9.3 11 12.5 15.3 17.6 17.5 17.4 16.3 14.8 12.7
Min °F 46.2 46.1 46 47.9 51.2 54.8 58.6 61.4 60.8 58.4 55.1 50.4
Max °F 49.4 48.6 47.9 50.7 53.5 58.2 62.2 62.9 62.6 60.5 57.6 53.6

The warmest water temperature is in August with an average around 62.1°F / 16.7°C. The coldest month is March with an average water temperature of 46.9°F / 8.3°C.

7 day tide forecast for Cardiff

SunMonTueWedThuFriSat
  • Low 12:27am
    (1.98m)
  • High 06:28am
    (11.97m)
  • Low 12:55pm
    (1.94m)
  • High 06:54pm
    (12.07m)
  • Low 01:20am
    (1.92m)
  • High 07:15am
    (12.16m)
  • Low 01:46pm
    (1.92m)
  • High 07:39pm
    (12.08m)
  • Low 02:06am
    (2.02m)
  • High 07:58am
    (12.12m)
  • Low 02:26pm
    (2.06m)
  • High 08:22pm
    (11.87m)
  • Low 02:43am
    (2.27m)
  • High 08:40am
    (11.87m)
  • Low 03:04pm
    (2.36m)
  • High 09:03pm
    (11.47m)
  • Low 03:17am
    (2.62m)
  • High 09:20am
    (11.46m)
  • Low 03:37pm
    (2.74m)
  • High 09:43pm
    (10.95m)
  • Low 03:48am
    (2.99m)
  • High 09:59am
    (10.96m)
  • Low 04:05pm
    (3.1m)
  • High 10:22pm
    (10.39m)
  • Low 04:15am
    (3.3m)
  • High 10:38am
    (10.44m)
  • Low 04:33pm
    (3.4m)
  • High 11:02pm
    (9.86m)
7 day tide times for Cardiff

*These tide times are estimates based on the nearest accurate location (Newport, Gwent, Wales) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.