Conditions at Sri Lanka in September
September: Light at the End of the Tunnel
September is the beginning of the transition back to cleaner conditions. The wind is still predominantly from the ESE (36.6%) and SE (37.5%), but ideal wind has crept up to 16%, and a growing westerly component (WSW 0.7%, W 0.4%, SW 1.2%, SSW 2.2%) signals the monsoon weakening. The swells remain substantial - 6.6ft (2.0m) average with a 14.3s period - and the direction is heavily SSW (70.9%), i.e. the swell is arriving from the NNE. That is an excellent swell direction. The challenge is still the onshore texture, which will improve as the season advances. Water temp is 26.7°C, air temp 25.8°C, and precipitation is minimal at 0.98 mm/day. For the determined surfer, the increasing number of clean windows - especially when a westerly sea breeze kicks the ESE trades out - makes September a rewarding shoulder-season month.
Average Spot conditions at Sri Lanka in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sri Lanka 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 Sri Lanka for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sri Lanka 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 Sri Lanka.