Llangennith - surf spot statistics

Llangennith in the UK offers varied surf conditions throughout the year, with the best months generally being autumn and winter when ground swells dominate and wave quality improves. From January to February, ground swells are most frequent (around 52-53%), with mean swell sizes around 1.3-1.4m. However, wind conditions are poor (87-89% unfavorable), often creating choppy surf. March sees a slight drop in ground swells (40%) and smaller waves (1.1m), maintaining challenging winds. Spring (April-June) brings weaker conditions, with ground swells dropping significantly (8-24%) and wind swells taking over. Swell size averages a modest 0.7-0.8m, and wind quality remains poor (87-91% unfavorable). Summer (July-August) is the least favorable, with minimal ground swells (3%), tiny waves (0.7m), and very poor winds (95% unfavorable). September marks a transition, with a slight uptick in ground swells (11%) but still subpar winds. October-December sees improving conditions, with ground swells increasing (23-46%), swell sizes growing (1.1-1.3m), though wind quality remains an issue (90% unfavorable). The prime window for surfers is late autumn to early winter (October-December), when ground swells return and wave heights increase, despite persistent wind challenges. January-February also provides solid swells but similarly tricky winds. For the cleanest and most powerful waves, advanced surfers should target the winter months, while summer offers only small, wind-affected conditions suitable for beginners or longboarders.

In September, Llangennith offers generally small but rideable surf, with an average swell height of 0.8m and a decent period of 8.4s, indicating relatively clean and organized waves. The majority of swell comes from the WSW direction, contributing to the most consistent waves, particularly in the 0.5-1.5m range. Larger swells (1.5-2.5m) are less frequent but still possible, especially from the SW and WSW, which can provide punchier, more powerful sets when conditions align. However, wind is a limiting factor—only 8% of the time is it ideal for surfing, with light offshore or cross-shore winds. The predominant wind directions (SW, WSW, and W) often bring onshore or side-shore breezes in the 10-30kph range, creating chop or disrupting wave quality. Surfers should prioritize sessions during incoming WSW swells with lighter winds for the best conditions, though patience may be needed to score clean, head-high+ days. Overall, September is a mixed month with small to moderate surf potential, requiring selective timing for optimal rides.