Today's Cap St Louis sea temperature is 18.5 °C
(Normal for this time of year)
| Mean: | 18.6 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Range: | 16.6 °C to 22.6 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statistics for 10 Jun (1981–2005) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Today, many surfers would wear a spring wetsuit.
Sunny with pleasantly warm air temperatures (feeling like 24 °C once we account for wind), yet at 18 °C the sea remains several degrees colder than the air at Cap St Louis. The majority of surfers will need a spring wetsuit though a summer suit or even a shorty may suffice for a short session.
 Map of current France Surface Water Temperatures (based on measurements from oceanographic satellites) |  Map of current France 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 Cap St Louis. 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.
Cap St Louis water temperatures peak in the range 22 to 26°C (72 to 79°F) on around the 17th of August and are at their coldest on about the 1st of March, in the range 12 to 13°C (54 to 55°F). Cap St Louis water temperatures are always warm reach their warmest in the middle of August. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The coldest water temperatures at Cap St Louis at the beginning of March are ideally suited to a 4/3mm wetsuit + 3mm boots, although a 5/3mm wetsuit may be preferable for longer sessions and cold windy days.
Actual sea surface water temperatures close to shore at Cap St Louis 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 Cap St Louis. Refer to our detailed weather forecasts for this information.
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