St Ives - surf spot statistics

St Ives in the United Kingdom offers surfable conditions year-round, but the best months for quality waves and favorable winds are typically from late autumn through early spring, particularly November to February. During these months, ground swell dominates (65-82%), providing more consistent and powerful waves with mean swell sizes ranging from 2.0m to 2.4m. However, wind conditions are often challenging, with bad onshore winds prevailing 88-91% of the time, which can make sessions messy. The prime window is likely December to February when ground swell percentages peak, but surfers must be prepared for strong winds. Spring (April-June) and summer (July-August) see a significant drop in ground swell activity, replaced by wind swell (42-77%) and smaller waves (1.1-1.4m). While wind conditions improve slightly (15-17% good winds), the lack of consistent ground swell makes sessions weaker and less reliable. September and October mark a transitional period, with ground swell increasing again (37-53%) and better wave energy returning (1.3-1.7m). For surfers seeking cleaner conditions, these shoulder months might offer occasional good days, though wind remains a limiting factor. Overall, winter delivers the most powerful waves, but patience is required to score optimal wind alignment.

November at St Ives offers decent surf conditions, though wind plays a significant role in shaping the experience. The average swell height of 2.0m combined with a solid 11.2s period suggests well-formed, powerful waves, particularly when swells arrive from the west to northwest—which dominate the distribution. Swells from the W, WNW, and WSW directions frequently produce rideable waves between 1.5m and 2.5m, with bigger sets occasionally pushing over 2.5m. However, the wind is only favorable (onshore or light/cross-shore) about 10% of the time, meaning clean conditions are somewhat rare. Prevailing winds from the SW, WSW, and S often blow in the 20-40kph range, creating choppy or blown-out surf, especially during stronger systems. For surfers, this means patience is key—wait for those W/NW swells to coincide with lighter winds or offshore moments for the best sessions. Mid-sized days with 1.5-2.5m waves and manageable wind will offer the most consistent opportunities.