Conditions at Louro in May
May: Smaller Days, More Windows, Still Fun
May is a true shoulder month. Average swell size falls to 3ft (1.0m) and wave period drops to 8.0s, which moves Louro into average, punchy territory rather than powerful. The swell spectrum still favors W (17.8%), WNW (26.2%) and NW (19.9%), with the preferred S-SSW-SW-WSW window increasing slightly to around 15.3% as spring storms slip farther south. Offshore N-NE winds blow 38% of the time, led by a strong NNE signal (18.5%) that keeps the beach lined up on the better days. The old summer pattern is still building, but May can deliver fun, rippable conditions on a good WNW swell with light offshores. Water temp climbs to 15.0°C, air temps average 14.4°C, and rain eases to 2.82 mm/day.
Average Spot conditions at Louro in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Louro 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 Louro for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Louro 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 Louro.