Conditions at Sesimbra in March
March: Equinox Groundswell
March remains in the prime window, but the ocean slowly softens. Average surf is around 5-6ft (1.5-1.8m) and the period drops slightly to 12.4s. WNW and NW swells share the load almost equally at 32% and 31%, with another 14% from the west. This is a consistent source of groundswell for Sesimbra, especially when the wind goes offshore from the N/NE. The wind blows ideal around 46% of the time, and NNW flow is especially prevalent. Water temp holds at 15°C while air temps start to feel spring-like at 14°C. Occasional SSW/SW swells are still possible; these are the most direct and can turn the bay on when they align with a morning offshore.
Average Spot conditions at Sesimbra in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Sesimbra during March. 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 Sesimbra for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sesimbra for March. 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 Sesimbra.