Sao Lourenço Water Temperature and Wetsuit Guide

The water temperature (14 °C) at Sao Lourenço is quite cool. If the sun does come out as forecast, it should feel warm enough to surf in a good sealed spring wetsuit. Some surfers would prefer to wear gloves and boots too. Effective windchill factor of (11 °C) will make the air and water feel about the same temperature.

Map of current Portugal Surface Water Temperatures based on measurements from oceanographic satellites

Map of current Portugal 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 Sao Lourenço. 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.

Sao Lourenço sea temperatures peak in the range 20 to 22°C (68 to 72°F) on around the 20th of August and are at their minimum on about the 25th of February, in the range 14 to 16°C (57 to 61°F). Sao Lourenço sea temperatures are warmest in mid to late August. Surfers should use a 2mm long sleeve shorty or a 3/2mm spring wetsuit if the wind is up. The minimum sea temperatures at Sao Lourenço in late February 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 Sao Lourenço 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 Sao Lourenço. Refer to our detailed weather forecasts for this information.