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Llantwit Major water temperature
Llantwit Major ratings
Quality on a good day: 2.3
Consistency of Surf: 2.1
Difficulty Level: 2.9
Wind and Kite Surfing: 2.0
Crowds: 2.0

Overall: 2.1

See all 18 ratings

Based on 10 votes. Vote


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Llantwit Major Water Temperature and Wetsuit Guide

(Wales – South East, UK)

Today's Llantwit Major sea temperature is 15.8 °C.

Statistics for 21 Oct (1981–2005) – mean: 14.2 °C, range: 12.8 °C to 15.2 °C

The water temperature (15 °C) at Llantwit Major is fairly cool. Despite the sun, a windchill factor of (8 °C) means that surfers will need a good quality spring wetsuit, a neoprene hood. Some surfers would wear gloves and boots.

United Kingdom Sea Water Temperature

Map of current United Kingdom
Surface Water Temperatures
based on measurements from oceanographic satellites
United Kingdom Water Temperature Anomaly

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 Llantwit Major. 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.

Llantwit Major Water Temperature Graph

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.

Llantwit Major sea temperatures peak in the range 15 to 18°C (59 to 64°F) on around the 13th of August and are at their minimum on about the 1st of March, in the range 8 to 9°C (46 to 48°F). The highest seasonal sea temperatures at Llantwit Major in the third week of August lend themselves to a 4/3mm wetsuit or a 3/2mm suit and 3mm neoprene boots. The minimum sea temperatures at Llantwit Major mean that you will need a flexible 6/5/4mm wetsuit or a well fitting 5/4mm wetsuit with gloves and 5mm neoprene booties and a hood to surf here at the beginning of March.

Actual sea surface water temperatures close to shore at Llantwit Major 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 Llantwit Major. Refer to our detailed weather forecasts for this information.