Conditions at Portsalon in May
May: Peak Spring Frequency for NE Swell
May is the month with the highest share of the optimal NE-to-E swell spectrum: combined NNE/NE/ENE/E observations reach around 6.5%. The trade-off is size - average swell height drops to 1.6m (5.2ft) and period to 9.5s, so most of this window is in the fun-sized 1-1.5m (3-5ft) range. W and WNW swell still dominate the background (39% combined), often as fading groundswell from late-season Atlantic lows. Ideal offshore winds are 28% of the time, and with water at 11.2°C and air near 10°C, it starts to feel more spring-like. Longboard-friendly, rippable conditions are common in May, but don't expect winter-level power.
Average Spot conditions at Portsalon in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Portsalon 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 Portsalon for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Portsalon 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 Portsalon.