Conditions at Ibaraki in December
December: Peak Season Lock-In
December is arguably the peak month at Ibaraki. The average swell is a solid 1.6m (5.2ft), period 9.8s, and the swell rose is loaded with winter energy: NE (18.2%), NNE (14.4%), ENE (12.1%), E (10.2%) and a healthy dose of NNW (8.2%) and N (5.6%). More importantly, ideal offshore winds appear 31% of the time - the best of any month. WNW winds blow 11.3% of the time and NW winds add another 11.4%, creating classic Ibaraki conditions with groomed faces and consistent east/northeast swell wrapping into the beach. The Siberian High strengthens, cold fronts sweep through, and the North Pacific delivers wave after wave. Air temperatures drop to 8.5°C, water temp cools to 15.7°C, and precipitation is low at 1.95 mm/day. Winter is here and Ibaraki is alive. Get your hood and gloves ready - the best surf of the year is on.
Average Spot conditions at Ibaraki in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Ibaraki during December. 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 Ibaraki for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Ibaraki for December. 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 Ibaraki.