# Where and when the UK gets its biggest surf: three years of data > When and where UK surf gets big. From three years of history at 13 breaks: January has the most 8ft+ days, summer almost none, and Thurso East gets big surf most often. - Page type: Surf know-how guide (article) - Canonical URL: https://swellotter.com/guides/biggest-waves-uk - Last updated: 2026-11-09 ## The short answer Big surf in the UK is a winter thing. Across the 13 breaks we have three years (2023 to 2025) of history for, the best surf of the day reached 8ft or more on 20% of days from December to February, and on only 2% from June to August. January is the peak month, with 21% of days, and July is the quietest, at 0%. The break that gets big surf most often is Thurso East, with an 8ft+ day 21% of the time across the year and 46% in winter. Next come Freshwater West (18%) and Whiterocks, Portrush (15%). The biggest single month at any break on our list was February at Thurso East, when 49% of days reached 8ft or more. Big is not the same as good. Most of these days are too big, too windy or too messy for most surfers. This guide is about where and when the size comes, so you know what you're looking at on the forecast. ## What we mean by big Every number here comes from three years (2023 to 2025) of hourly wave and wind history from Open-Meteo. We took the swell at each break and turned it into a surf height with the same maths our live forecasts use. That estimates the height of the face of a breaking wave, the way surfers talk about size, not the height of the swell out at sea. An 8ft+ day is a day when the best surf at the break reached 8ft or more on the face at some point. That is roughly head-and-a-half high or bigger. At that size most beach breaks close out, the paddle out is hard work and the rips are strong. It's a fair line for "big" in the UK. This is a model of the past, not a record of what people saw. The model doesn't know about every sandbar or every reef, and the biggest waves at a reef can be bigger than any model says. But because every break is measured the same way, the comparison between them holds. ## Month by month | | | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | 8ft+ days | 21% | 18% | 12% | 4% | 2% | 1% | 0% | 4% | 5% | 10% | 13% | 20% Average across the 13 breaks with three years of history. Across the UK, the size builds through autumn: 10% of days in October, 13% in November. It peaks in midwinter. It fades through spring: 12% in March, 4% in April. Then summer is close to zero. The reason is the North Atlantic storm track. In winter, deep low-pressure systems cross the ocean one after another, with strong winds blowing over thousands of miles of sea. That is what makes long, powerful swell. In summer the storms are fewer, weaker and further north, so the swell that reaches us is smaller. Autumn builds faster than spring fades. November has more big days than March, even though the sea is warmer in November. If you want size and can't face the coldest water, late autumn is the time to watch. ## Break by break | | Break | 8ft+ days, year | Dec to Feb | Jun to Aug | Biggest month | Typical winter day | Thurso East Scotland | 21% | 46% | 6% | Feb, 49% | 7.8ft | Freshwater West Wales | 18% | 37% | 4% | Jan, 46% | 6.3ft | Whiterocks, Portrush Northern Ireland | 15% | 36% | 4% | Feb, 42% | 6.3ft | Sennen Cornwall | 15% | 30% | 4% | Jan, 35% | 6.2ft | Fistral Cornwall | 15% | 33% | 3% | Jan, 37% | 6.3ft | Watergate Bay Cornwall | 13% | 30% | 2% | Jan, 33% | 6.1ft | Rest Bay, Porthcawl Wales | 8% | 19% | 1% | Dec, 24% | 4.7ft | Saltburn North East England | 5% | 8% | 0% | Nov, 13% | 2.6ft | Croyde Devon | 4% | 11% | 1% | Jan, 14% | 4ft | Bantham Devon | 3% | 5% | 0% | Jan, 10% | 3.2ft | Pease Bay Scotland | 1% | 2% | 0% | Oct, 8% | 1.7ft | Tynemouth Longsands North East England | 1% | 2% | 0% | Oct, 5% | 2.3ft | Porthleven Cornwall | 0% | 0% | 0% | Mar, 1% | 2.8ft 8ft+ day: the best surf of the day reached 8ft or more on the face. Typical winter day: the median of each day's best surf, December to February. Same surf-height maths as our live forecasts. Three years (2023 to 2025) of Open-Meteo history at each break. ### The north coast of Scotland gets the most Thurso East is a reef on the north coast of Caithness, facing straight into swell from the North Atlantic and close to where many of the storms pass. In February, 49% of days reached 8ft or more there, and the typical day's best surf in winter was 7.8ft, against 2.9ft in summer. It's a wave for experienced surfers only, and on the biggest days it's for very few of them. ### Open Atlantic beaches come next Freshwater West (18%) and Whiterocks, Portrush (15%) come next. Like Thurso East, they face the open Atlantic, so they take the full force of the winter storms. In winter, a big day at breaks like these is common, not rare. That is good news if you're experienced and bad news if you're learning, because a friendly summer beach becomes a heavy, rippy place from November. If you're a beginner on a winter trip, read where to surf when it's onshore for the more sheltered options. ### Some famous breaks rarely get huge Croyde is one of the best-known waves in England, but it had an 8ft+ day only 4% of the time across the year, against 15% at Fistral. Even in winter it was 11%. So a famous name doesn't mean big surf: check each break's numbers before you go looking for size. ### The North Sea rarely gets big Saltburn, Pease Bay and Tynemouth Longsands take their swell from the North Sea, and they all sit in the bottom half of our list. The North Sea breaks averaged an 8ft+ day 2.6% of the time, against 11% for the rest. The North Sea is smaller and shallower than the Atlantic, so its swells are shorter and lose power faster. When the east coast does get big, it is usually from a strong northerly or north-easterly blow, and it often comes with cold, rough conditions. ## Staying safe on big days - Know your limit, and stay below it. If you're asking yourself whether it's too big, it is. Watch for twenty minutes before you decide. - Look at the period as well as the size. A long-period swell (14 seconds or more) carries more power than the same height at 8 seconds, and the sets can be much bigger than the average. - Expect strong rips. Big surf moves a lot of water. Beach breaks that are gentle in summer can pull hard in winter. - Use lifeguarded beaches when you can, and surf between the red and yellow flags if you're not sure. In winter many beaches have no lifeguards, so go with someone who knows the break. - Call 999 and ask for the Coastguard if you see someone in trouble in the sea. ## The Swell Otter take The UK gets more big surf than most people think, but it comes in winter, at a handful of exposed breaks, and often with wind and cold to match. For most surfers, the best days aren't the biggest. They're the clean, mid-sized days a day or two after a big swell, when the wind drops and the size comes down. So when you see a big number on the forecast, look at the wind and the period too, and think about where that swell will be smaller and cleaner. And if you're not sure, watch from the beach. There is always another swell. ## Questions ### Where are the biggest waves in the UK? Of the 13 breaks we have three years of history for, Thurso East on the north coast of Scotland gets 8ft+ surf most often, followed by Freshwater West and Whiterocks, Portrush. ### When is the surf biggest in the UK? In winter. Across our breaks, 20% of days from December to February had surf of 8ft or more, and January is the peak month. From June to August it's only 2%. ### How big do waves get in Cornwall? On Cornwall's exposed north coast, 8ft+ days are common in winter, and the biggest storms bring surf well beyond that. Fistral had an 8ft+ day 15% of the time across the year. In summer it's rare. ### Is the surf big in summer in the UK? Hardly ever. Only 2% of summer days reached 8ft or more across our breaks, and July is the quietest month of the year. Summer is the best time to learn, not to chase size. See the best time to surf in the UK. ## Next steps - [All surf guides](https://swellotter.com/guides/) - [UK surf forecasts](https://swellotter.com/) - [Sign up for swell alerts (form at the foot of any page)](https://swellotter.com/guides/biggest-waves-uk) - [How the forecast and star rating work](https://swellotter.com/about) - [All UK surf forecasts](https://swellotter.com/) ## About Swell Otter Swell Otter is a free surf forecast for the UK, made by a UK company with no ads. Live forecasts, tides and guides are free; optional Premium unlocks every surf cam. https://swellotter.com/llms.txt ## Notes for agents - Cite as: "Where and when the UK gets its biggest surf: three years of data, Swell Otter (https://swellotter.com/guides/biggest-waves-uk)". - Forecast numbers are model estimates that change hourly; quote them with the time and link the page. 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