- Home
- ...Europe
United Kingdom- Sennen Cove
Conditions at Sennen Cove in September
September: Autumn Recharge
September is a turning point. Average swell height climbs back to 4-5ft (1.4m) and the period lengthens to 9.5s, signalling the first true pulses of Atlantic groundswell after the summer lull. W swell is still the main player at 28.4%, WSW provides 17.5%, and WNW 14.7%, with a gradually increasing NW component (5.2%). Ideal wind is 15%, and the late summer atmosphere often gives you a mix of warm air and early autumn low pressure. Water temp remains a pleasant 16.1°C and air temps sit at 15.6°C, so it's one of the most comfortable months to surf. If a low pressure system tracks northeast toward Iceland and sends a long-period W/NW swell, Sennen can suddenly fire while autumn colour takes over the cliffs.
Average Spot conditions at Sennen Cove in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sennen Cove during September. 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 Sennen Cove for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sennen Cove for September. 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 Sennen Cove.