Conditions at Sendai in July
July: Typhoon Season Brewing Below a Summer Ceiling
July remains locked in summer doldrums. Average wave height is 3ft (0.9m), period is 8.5s, and ideal wind is only 28% - one of the worst months for clean conditions. SE (35.8%) and ESE (32.0%) swells dominate, with SSE (15.3%) and E (12.5%) secondary. Tropical cyclones start to spin up south of Japan, occasionally sending longer-period SE swell, but the accompanying wind is almost always onshore. The water temp jumps to 20.3°C and the air average reaches 22.5°C with the wettest monthly precipitation at 5.44mm/day. Unless a typhoon passes in a perfect window, expect small, windblown summer surf.
Average Spot conditions at Sendai in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Sendai 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 Sendai for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sendai 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 Sendai.