Conditions at Tadado in December
December: Heading into the Shadow
December marks the slide into winter's shadow. The average swell height is back up to 6ft (1.8m), but the direction is dominated by W (30%) and ENE (11%) - both poor angles for this south-facing spot. The favourable SSE/S/SSW/SW window shrinks to a meagre 8%. Periods sit at 7.2s, offering some punchy energy, but it's almost all cross-shore and secondary swell. The wind, at least, is predominantly offshore: N-NE winds are strong and frequent, with the ideal surfing wind percentage at 27%. This creates an ironic situation - the wind is good, but the waves are not. On the rare occasion when a southern groundswell wraps around the Japanese coast, the offshore winter breeze will groom it into clean, hollow lines. But those are diamonds in the rough. Water temp cools to 18.9°C, air to 13.3°C, and precipitation is the lowest of the year at 2.45 mm/day - a dry, cold, and mostly flat start to winter.
Average Spot conditions at Tadado in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Tadado 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 Tadado for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Tadado 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 Tadado.