Lighthouse Water Temperature and Wetsuit Guide

The water temperature (9 °C / 48 °F) at Lighthouse is very cold. Despite the sun, surfers will need plenty of neoprene. Wear a quality winter wetsuit, a neoprene hood, gloves and boots. A windchill factor of (5 °C / 41 °F).

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

Map of current Ireland 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 Lighthouse. 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.

Lighthouse sea water temperatures peak in the range 14 to 18°C (57 to 64°F) on around the 14th of August and are at their coldest on about the 22nd of February, in the range 8 to 10°C (46 to 50°F). The maximum seasonal sea water temperatures at Lighthouse in mid August lend themselves to a 4/3mm wetsuit or a 3/2mm suit and 3mm neoprene boots. At its coldest in the second half of February, low sea water temperatures at Lighthouse 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 Lighthouse 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 Lighthouse. Refer to our detailed weather forecasts for this information.

Latest surface water temperature for the entire globe. Click the image to view a larger version.