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.

November at Caswell Beach offers variable surf conditions with a dominant swell from the WSW direction, accounting for the majority of waves, especially in the 0.5–2.5m range. The average swell height is 1.0m with a decent period of 9.3s, indicating reasonably clean and organized waves. However, only 10% of the time does the wind align ideally for surfing, meaning onshore or cross-shore winds (SSW to W) are common, which can degrade wave quality. The best chances for cleaner surf occur when winds are light (0–10kph) or from favorable directions like NNE to E, though these are less frequent. Expect smaller, weaker waves from the E and SE, while WSW swells deliver the most rideable energy, albeit often with wind interference. Overall, November is hit-or-miss—occasional good sessions when wind cooperates, but often choppy or blown out due to prevailing SW-WSW winds. Advanced surfers can hunt for peaks on WSW swells, while beginners may struggle with consistency.