Taito seasonal overview
Best Surf Season (December - March)
As the Aleutian Low deepens and the Siberian High strengthens, the North Pacific sends a steady stream of extratropical swells toward Japan. Taito's east-northeast facing coastline sits directly in the optimal NNO-NO-ONO-O swell window, and from December through March roughly half of all incoming wave energy arrives from that productive quadrant. Average heights hold around 1.2-1.4m (4-4.5ft) with average periods just under 10 seconds, producing punchy, powerful surf. The main limitation is wind: ideal offshore flow from SSW-W only occurs 18-20% of the time, so the best days are those post-frontal windows when a low pressure system passes and the wind clocks westward.
Fair Surf Season (April - May & September - November)
The shoulder seasons are a game of trade-offs. In April and May, the wind turns more favourable (24-29% ideal), but the swell direction shifts toward ESE/SE and the period drops to 8.1-8.6s, making for smaller, less organised waves. From September through November, the opposite is true: the swell window refills with E and ENE groundswell thanks to typhoons and early autumn lows, but strong NNE/NE onshore winds often wreck the surface. Flat-calm days and head-high swells rarely match up; you need patience and a flexible schedule to score.
Low Surf Season (June - August)
Summer is Taito's quietest stretch. Average swell heights drop to 1.1-1.2m (3.5-4ft), periods shorten, and the dominant directions become ESE and SE, with only 17-22% of wave energy arriving from the preferred ENE/N sector. Offshore SSW/SW winds are actually at their annual peak during these months, which keeps the summer surf clean, but the raw material is mostly small, short-period windswell. The exception is typhoon season in August, when a well-placed storm can send a pulse of long-period E/ENE energy toward Japan; otherwise, it is a time for longboards and small-wave equipment.