Porzcarn seasonal overview
Best Surf Season (November - March)
Porzcarn's west-north-west exposure puts it right in the firing line of the North Atlantic storm track. From November through March, a near-continuous conveyor of WSW, W and WNW swell hits the French coast, with average wave heights holding in the 6-7ft (1.8-2.2m) range and average periods stretching from 10.9 to 12.0s. These are long-period, powerful waves. The catch is that the same frontal systems that generate the swell often drag raw onshore winds through the area; only about 15-19% of the time does the wind turn offshore out of the ENE-SE quadrant. When that alignment happens, Porzcarn can be genuinely world-class.
Fair Surf Season (April - May & September - October)
The shoulder months at Porzcarn offer a friendlier trade-off. April still sees plenty of W and WNW swell, just smaller and shorter-period, while May hangs onto rideable 4ft (1.2m) pulses. September and October mark the reverse journey as the ocean reawakens with the first autumn storms, average periods climb back above 10s, and heights push to 5ft (1.6m) or better. Ideal wind percentages reach their annual highs around 19-20% in these months, so the clean-window ratio is slightly better even if the size is less consistent.
Low Surf Season (June - August)
Summer is the leanest stretch for Porzcarn. Average swell heights fall to 3ft (1m) and average periods drop to 8.5-8.9s, meaning most of the energy is short-period windswell and locally wind-driven. The W and WNW directions still dominate the waverose, but the majority of those observations sit below 5ft (1.5m). Onshore west-to-northwest winds rule more than 40% of the time, and ideal offshore conditions are scarce at just 12-15%. Patience and an early-morning tide can still produce fun, small waves when an east or southeast breeze lines up with a modest WNW pulse.