Conditions at Sesimbra in May
May: Summer Preview
Average surf eases to around 4ft (1.2m) and the period drops to 10s, signaling summer's approach. The swell rose is now heavily weighted toward NW, with NW at 40% and WNW at 33%, most of it in the 1-1.5m class. These are windswell/groundswell hybrids rather than deep ocean monsters. Still, with ideal winds 42% of the time and NNW winds blowing 32% of the time, Sesimbra can offer clean, rippable small waves. Water temp climbs to 16.2°C and rainfall is low at 1.3mm/day. The best sessions are often early morning before the seabreeze or thermal winds add texture.
Average Spot conditions at Sesimbra in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Sesimbra during May. 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 May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sesimbra for May. 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.