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.

August at Caswell Beach tends to offer relatively small, manageable surf conditions for surfers, but with limited ideal wind windows. The average swell height is 0.6m with a 7.5s period, indicating generally weak to moderate energy waves—suitable for beginners or longboarders but underwhelming for advanced surfers seeking power. Swell direction is predominantly from the WSW (accounting for the largest share of waves, including some in the 1-2m range), followed by SW and W, which means most swells align reasonably well with the beach’s orientation. However, the majority of waves (over 70%) fall below 1m, with only about 8% reaching 1.5m or more, suggesting rare days with punchy rides. Wind conditions are less favorable, with only 8% of winds being ideal (likely light offshore or cross-shore). The prevailing winds come from the WSW-W sector at 10-30kph, which can create choppy or sideshore conditions. Stronger winds (20-30kph) are frequent from the SW-WSW, further reducing clean surf opportunities. In summary, August delivers small, mellow waves with occasional mid-period swells, but wind quality is inconsistent—best suited for relaxed sessions when conditions align. Patience and timing will be key for scoring the rare clean, rideable days.