Conditions at Santa Cruz in May
May: Dependable Size, Fickle Winds
May still has waves at Santa Cruz, but the quality shifts. Average swell height eases to 5.6ft (1.7m) and the period drops to 9.9s, bringing more average, punchy windswell mixed with occasional groundswell. Directionally it is almost entirely from the northern half of the compass - NNW (31.5%), NW (30.5%), WNW (17.4%) and W (8.8%) combine for 88.2% of all observations. There is plenty of chest-to-head-high lines, but the shorter period means the beach has to work harder to turn that energy into a well-formed wave.
Wind quality is poor for the majority of the month. Ideal surf conditions register only 9%, with the wind blowing from NNW 34.0% and N 14.7% of the time; the offshore easterly quadrant is a rare 4.7%. The result is many afternoons with side-on or onshore texture. Air temperatures reach 16.7°C on average (min 8.4°C, max 29.9°C), precipitation is 1.48 mm/day and water temperature warms to 16.2°C. The best bet is an early morning low-tide session before the onshore wind spikes.
Average Spot conditions at Santa Cruz in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Santa Cruz 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 Santa Cruz for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Santa Cruz 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 Santa Cruz.