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.

October in St Ives offers a mixed bag for surfers, with an average swell height of 1.7m and a decent period of 10.4s, suggesting well-formed waves when conditions align. The predominant swell direction is from the west and northwest, with the highest frequency of rideable waves (1.5m+) coming from W, WSW, and WNW. These directions provide the most consistent energy, particularly in the 1.5-2.5m range, making them ideal for intermediate to advanced surfers. However, easterly swells (E, ESE) can also bring size but are less frequent and often accompanied by less favorable winds. Wind conditions are tricky, with only 14% of days offering ideal offshore winds—typically from the northeast quadrant. The most common winds are south to westerly, which can create choppy or cross-shore conditions, especially when stronger (20-30kph). SW and S winds are particularly problematic, frequently blowing at higher speeds and disrupting wave quality. For the best sessions, watch for W/NW swells paired with NE winds—these will offer clean, powerful waves. Smaller days (1-1.5m) are more forgiving but still require careful wind timing. Overall, October can deliver good surf, but patience and selectivity are key due to the variable wind patterns.