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Conditions at Bournemouth in September
September: The Autumn Switch is Flicked
September is the first month that genuinely shivers with autumn. Average swell nudges back up to 0.9m (3ft), while period lengthens slightly to 6.2s - still short period, but with more push than July and August. WSW (24.6%) and SW (19.2%) remain the main swell directions, and the favourable SE/SSE/S/SSW quadrant improves to 12.3%. Windwise, the offshore window is 16%, and while SW (12.0%) and WSW (12.7%) are still common, the wind fields begin to swing more into the W/NW quadrant. Warm water of 16.5°C and air temperatures around 16.1°C make it pleasant, though rainfall increases to 2.08 mm/day. Look out for the first proper Atlantic low in the final third of the month - those are the pulses that wake up Bournemouth.
Average Spot conditions at Bournemouth in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Bournemouth 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 Bournemouth for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Bournemouth 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 Bournemouth.