Sea Temperature

Porthmadog Sea Temperature

(Today) Dec 2018

11.1°C / 52°F

Current weather

7°C / 45°F
(light rain)

Partly cloudy
Wind

11 mph

Humidity

81%

The measurements for the water temperature in Porthmadog, 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.

Monthly average sea temp

Monthly average max / min water temperatures

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

Maximum and minimum monthly sea temperatures in Porthmadog
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.4 7.1 7.5 8.1 9.7 11.4 13.2 14.8 15 13.4 11.9 9.1
Max °C 10.1 9.6 9 10.3 11.8 14.1 16.1 16.2 16.3 15.6 14.2 12.5
Min °F 46.4 45.7 46.1 47.5 50.3 53.6 56.9 59.2 59.5 57 54.3 49.7
Max °F 49.1 48.2 47.6 49.7 52.4 56.3 59.8 60.6 60.8 59.2 56.6 53.1

7 day tide forecast for Porthmadog

SunMonTueWedThuFriSat
  • High 01:44am
    (3.54m)
  • Low 09:02am
    (2.10m)
  • High 02:18pm
    (3.81m)
  • Low 09:57pm
    (1.84m)
  • High 02:54am
    (3.54m)
  • Low 10:28am
    (2.00m)
  • High 03:29pm
    (3.86m)
  • Low 11:02pm
    (1.67m)
  • High 04:07am
    (3.73m)
  • Low 11:29am
    (1.80m)
  • High 04:34pm
    (4.08m)
  • Low 11:55pm
    (1.46m)
  • High 05:04am
    (4.04m)
  • Low 12:21pm
    (1.56m)
  • High 05:26pm
    (4.37m)
  • Low 12:44am
    (1.25m)
  • High 05:52am
    (4.40m)
  • Low 01:11pm
    (1.33m)
  • High 06:14pm
    (4.68m)
  • Low 01:31am
    (1.08m)
  • High 06:37am
    (4.76m)
  • Low 02:00pm
    (1.12m)
  • High 07:00pm
    (4.94m)
  • Low 02:19am
    (0.94m)
  • High 07:23am
    (5.05m)
  • Low 02:49pm
    (0.95m)
  • High 07:47pm
    (5.13m)

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

Average December sea temperatures

  • Max: 12.5°C / 54.5°F
  • Avg: 10.8°C / 51.4°F
  • Min: 9.1°C / 48.4°F
Porthmadog average sea temperature chart

These average ocean temperatures for Porthmadog are calculated from several years of archived data.

Map showing location of Porthmadog (52.929240, -4.131370)

Locations nearby

Variations

Whilst sea temperatures for Porthmadog are as accurate as current data allows, there may be slight local and regional variations depending on conditions. Time of day and wind direction may have a temporary local effect as can water flows from neraby rivers.

Alternate names for Porthmadog
Porthmadog, Portmadoc

Porthmadog average sea temperature chart