Conditions at Jardins do Mar in September
September: The Wind Window Opens
September is the best month of the summer-to-autumn transition. Average swell height ticks up to 5.2ft (1.6m), and the average period pushes back to 10.5s-a sign that the first true groundswells are beginning to roll in from the west. The swell rose is still dominated by NNW (40.4%) and NW (16.7%), with NNE (16.7%) and N (13.8%) playing a supporting role; the ideal W window appears at 2.1%, small but not totally absent. Winds are friendlier than any other month, with the ideal offshore window at 57% and a softer NNE (28.7%) / NE (20.3%) regime. Water temperature reaches its annual maximum at 23.8°C, air temps are warm and pleasant at 23.1°C (min 20.2°C, max 26.0°C), and precipitation starts to increase slightly to 0.55 mm/day. This is the month to catch warm-water, semi-clean lines before the winter intensity kicks back in.
Average Spot conditions at Jardins do Mar in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Jardins do Mar 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 Jardins do Mar for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Jardins do Mar 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 Jardins do Mar.