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Biarritz - surf spot statistics
Biarritz seasonal overview
Best Surf Season (October - March)
The heart of winter brings the largest and most consistent swell to Biarritz. With average wave heights between 1.3m and 1.8m and periods averaging 11-13 seconds, the North Atlantic delivers powerful, long period groundswells from the NW and WNW quadrants. A higher frequency of southerly to southwesterly winds, driven by passing low pressure systems, provides clean offshore conditions over 40% of the time in most months. This is when Biarritz truly fires, with classic A-frame peaks and long walls stacking up perfectly on the sandbanks.
Fair Surf Season (April & September)
These shoulder months offer a mix of smaller but still rideable swell, averaging 1.1-1.2m with periods around 10-11 seconds. The transition between seasons means more variable wind patterns. While the chance of perfect offshore conditions is lower (around 29%), windows of Southerly winds often coincide with fun sized waves from the NW. It is an excellent time for intermediate surfers to score uncrowded peaks with a good chance of clean shape under sunny skies.
Low Surf Season (May - August)
Summer sees a dramatic drop in both swell energy and wind quality. Average wave heights hover around 0.9m with shorter periods of 9-10 seconds, dominated by local windswell and small NW background swell. The predominant winds shift onshore from the NW and NNW, ruining wave face quality. Ideal offshore winds from the south occur less than 20% of the time. While occasional small, fun-sized waves can be found for a longboard or fish, consistent quality surf is rare. It is a time for beach relaxation rather than chasing barrels.
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Conditions at Biarritz in July
July: Peak Summer Doldrums
July brings the smallest average surf of the year: 0.9m with a period of 9.0s, the shortest of all months. The swell direction is almost entirely from the NW (66.5%) – a reflection of weak Atlantic fetch – and 43.3% of those waves are in the 0.5-1m range. Wind ideal for surfing drops to just 15%, as onshore NW-NNW winds dominate (WNW 18.7%, NW 17.9%, NNW 14.2%). The combination of tiny swell and persistent onshore breeze makes for mostly messy, choppy conditions. Occasionally, a southerly buster or a brief high pressure wedge can produce a few clean waist-high waves, but consistent quality is nonexistent. July is a month for beach days, not surf sessions.
Average Spot conditions at Biarritz in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Biarritz during July. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Biarritz for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Biarritz for July. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Biarritz.