Conditions at Rossnowlagh in July
July: Flat Spells and Westerly Wind
July represents the bottom of the swell curve at Rossnowlagh. The average height is just 0.8m (2-3ft) and the average period is the lowest of the year at 8.5s. Although the swell direction table still shows a huge peak of WNW energy at 34.6%, nearly all of it is small: the 0.5-1m class takes up 19.0% and the 1-1.5m class only 8.3%. The wind rose is the biggest issue, with W, WSW, WNW, and SW all well represented and ideal wind sitting at only 14% -- the lowest of the year. Onshore summer sea breezes frequently wreck the afternoon. Water temperature reaches 15.5°C and air temperatures peak around 14.3°C, so it is pleasant enough to sit out back, but this is a month for small-wave boards, high hopes, and patience.
Average Spot conditions at Rossnowlagh in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Rossnowlagh 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 Rossnowlagh for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rossnowlagh 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 Rossnowlagh.