Porthmadog Sea Temperature
(Today) 2022
Current weather
13°C / 56°F
(broken clouds)
Wind
16 mph
Humidity
87%
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 water 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 7.6 | 7.4 | 7.6 | 8.3 | 9.6 | 11.3 | 12.7 | 14.5 | 14.8 | 13.4 | 12 | 9.2 |
| Max °C | 10 | 9.7 | 8.9 | 10.2 | 11.7 | 13.9 | 15.8 | 16 | 16.1 | 15.4 | 14.3 | 12.6 |
| Min °F | 46.6 | 46.2 | 46.2 | 47.7 | 50.1 | 53.4 | 56.1 | 58.7 | 59.1 | 56.9 | 54.5 | 49.9 |
| Max °F | 49 | 48.5 | 47.5 | 49.6 | 52.2 | 56 | 59.2 | 60.2 | 60.4 | 58.9 | 56.8 | 53.3 |
The warmest water temperature is in September with an average around 59.7°F / 15.4°C. The coldest month is March with an average water temperature of 46.8°F / 8.2°C.
7 day tide forecast for Porthmadog
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*These tide times are estimates based on the nearest accurate location (Barmouth, 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.
