Conditions at Oyambre in May
May: Fun-Sized Waves and the Approach of Summer
May is the bridge into summer, and the wave heights reflect it. Average swell is 1.2m (4ft) with a period of 9.8s - smaller, punchy and more weather-driven. The wave rose still shows a remarkable 49.4% from the NW and 26.0% from the NNW, but most of that energy sits between 0.5 and 1.5m (2-5ft). True long-period groundswell becomes rarer, yet the persistent north-west fetch in the Bay of Biscay keeps Oyambre surfable more often than you might expect.
Ideal offshore wind drops to 24% and the list of wind directions broadens: ENE (10.6%), NE (9.4%) and NW (10.5%) all mix in. The NE/ENE flow tends to be strongest in the afternoon, so look for morning sessions with lighter winds. Water temperature is rising nicely to 15.5°C, air temp averages 15.0°C, and precipitation drops to 2.01 mm/day. This is the time to drag out a longboard or a groveler.
Average Spot conditions at Oyambre in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Oyambre during May. 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 Oyambre for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Oyambre for May. 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 Oyambre.