Caswell Beach - surf spot statistics

Caswell Beach in the UK offers surf conditions that vary significantly throughout the year, with the best surfing months typically being during autumn and winter. The data shows that from October to February, the swell quality and size are more favorable for surfers, with ground swell percentages peaking in December (43%) and January (49%). These months also have larger mean swell sizes, averaging 1.0–1.2 meters, which is more suitable for intermediate and advanced surfers. Wind conditions, however, are consistently poor throughout the year, with bad wind conditions dominating 89–93% of the time, making clean surf sessions rare. The worst months for surfing are from May to September, when ground swells drop sharply (2–10%), and swell sizes diminish to 0.6–0.7 meters, often resulting in weak, wind-affected waves. Wind swells become more dominant during this period, but they provide less consistent and lower-quality surf. Overall, the prime window for good waves at Caswell Beach is late autumn through early winter, particularly November to January, when ground swells are more frequent and wave heights are more substantial—despite the challenging wind conditions that require careful timing for the best sessions.

May at Caswell Beach typically offers small to moderate surf conditions, with an average swell height of 0.6m and a decent period of 8.5s, suggesting some clean, rideable waves when conditions align. The dominant swell direction is from the WSW, accounting for the largest share of waves, particularly in the 0.5-1.5m range, with stronger swells (1.5-2.5m) occurring less frequently. Winds are variable, but only 8% of the time do they align favorably for surfing—often coming from the SW to W sectors, which can create cross-shore or slightly onshore conditions at this spot. While the small average swell size means it's not ideal for advanced surfers seeking larger waves, there are occasional clean days when winds are light or offshore (likely from the E-NE). However, the majority of May sees onshore or side-shore winds, which can mess up the surface conditions. For shortboarders, it's a hit-or-miss month with some fun, small days; longboarders and beginners may find more opportunities due to the generally mellow waves. Keep an eye out for those rarer WSW swells paired with lighter winds for the best sessions.