Conditions at Omaezaki in December
December: Winter's Short-Period Energy Returns
December closes the year with the return of the strong winter monsoon. WNW (27.6%) and W (21.3%) dominate the swell rose, producing constant 3-5ft windswell with an average period of 7.3s. The S/SSW/SW window shrinks to around 9%, so most of what arrives is not in the ideal directional window. The good news is that W/NW winds generate a lot of raw surf, and the water is still 17.3°C, not too cold yet.
Wind-wise, WNW roars at 48.4%, much of it above 30kph, which creates choppy, cross-shore conditions. Ideal wind sits at only 16%, so pick the cleaner NW/NNW windows between storm pulses. Air temp drops to 11.9°C and rain is at a relative minimum of 2.39mm/day. December is for the dedicated local who wants consistent waves and does not mind waiting for the wind to cooperate.
Average Spot conditions at Omaezaki in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Omaezaki 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 Omaezaki for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Omaezaki 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 Omaezaki.