Porthleven Sea Temperature
The water will feel medium. The water will feel a bit chilly in just bathers / swimming costume. If you plan on wearing a wetsuit 4/3mm should be thick enough.
The measurements for the water temperature in Porthleven, England 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.
Water temp by month
Monthly average max / min water temperatures
The graph below shows the range of monthly Porthleven water temperature derived from many years of historical sea surface temperature data.
The warmest water temperature is in August with an average around 62.8°F / 17.1°C. The coldest month is March with an average water temperature of 49.5°F / 9.7°C.
7 day tide forecast for Porthleven
*These tide times are estimates based on the nearest accurate location (Newlyn, England) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.