Conditions at Mindelo in September
September: The First Signs of Autumn
September is where the season starts to stir. Average swell rebounds slightly to 5.2ft (1.6m) with a 10.4s period. The direction is still dominated by NW (34.1%), WNW (22.8%) and NNW (22.4%), but the period increase is a tell-tale sign that autumn lows are beginning to re-fire. Wind tables still show a strong NNW (29.2%) presence, yet the ideal wind percentage jumps to 31% as more NE/E offshore flow appears. Water temp is 16.7°C, air temp averages 19.2°C, and rain returns at 2.04 mm/day. Early autumn groundswells with offshore winds are the first real taste of what Mindelo is known for.
Average Spot conditions at Mindelo in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Mindelo 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 Mindelo for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mindelo 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 Mindelo.