Conditions at Sendai in January
January: Winter Monsoon Grit and Clean Offshore Windows
January is peak winter at Sendai. The average wave height is 3ft (1.0m) with a period of 9.4s, and the wind is ideal 50% of the time. The swell matrix shows a healthy spread of E, ENE and ESE energy along with a good chunk of locally-forced WNW/NW windswell behind the offshore flow. North Pacific lows spinning along the Aleutian front send 5-6ft (1.5-1.8m) sets from the ENE/E quadrant on the best days, while the Siberian High funnels cold NW winds straight offshore. The beach's east-southeast exposure is perfectly groomed by this setup, producing crisp, lined-up winter waves. With water temp at 9.5°C and air temperature hovering near 0.9°C, it is a cold, serious season. The main enemy is the wind swinging E/ESE on the tail of a passing low, which instantly turns the bay into a chop pile.
Average Spot conditions at Sendai in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Sendai during January. 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 January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sendai for January. 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.