Today's Porthmeor sea temperature is 17.0 °C
(1.2° warmer than normal for this time of year)
| Mean: | 15.8 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Range: | 13.9 °C to 17.0 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statistics for 18 Sep (1981–2005) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Today, many surfers would wear a spring wetsuit.
The Porthmeor water temperature is reasonably warm (17 °C) but the air temperature will feel a few degrees cooler (14 °C). A good quality spring wetsuit would be ideal.
 Map of current United Kingdom Surface Water Temperatures (based on measurements from oceanographic satellites) |  Map of current United Kingdom Sea Water Temperature Anomalies (compared with long term averages at this time of year) |
click thumbnails to expand
Below is a graph of Historical Sea Surface Temperature for Porthmeor. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.
All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.
Porthmeor sea water temperatures peak in the range 15 to 18°C (59 to 64°F) on around the 12th of August and are at their lowest on about the 1st of March, in the range 9 to 10°C (48 to 50°F). The maximum seasonal sea water temperatures at Porthmeor in the second week of August lend themselves to a 4/3mm wetsuit or a 3/2mm suit and 3mm neoprene boots. At its lowest at the beginning of March, low sea water temperatures at Porthmeor are suited to a 5/4mm or 5/3mm good quality wetsuit with neoprene gloves and 3mm boots. You will need a hood if it's windy or the air is cold.
Actual sea surface water temperatures close to shore at Porthmeor can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Porthmeor. Refer to our detailed weather forecasts for this information.
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