Conditions at Calais in July
July: The Summer Lull
July is the bottom of the surf calendar. Average wave height drops to about 2ft (0.6m) and the period to 4.8s, right in choppy, messy territory. WSW swells dominate at 21.4%, with NNE at 18.6%, but the low period ensures most of it is windblown lump. The wind field is dominated by SW at 27.2% and WSW at 17.0%-generally not the offshore direction Calais needs. The ideal wind share is just 5%. At least the water is warm at 17.9°C and air averages 17.1°C, so summer is about fun, forgiving conditions rather than serious wave quality.
Average Spot conditions at Calais in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Calais during July. 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 Calais for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Calais for July. 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 Calais.