Jan–FebCool, dry, and the season startsAround 18–20°C. Japan’s earliest cherry blossom, and the Southern Cross begins to clear the horizon.
MarchWarming, and whales offshoreComfortable everywhere. Humpbacks pass these waters into April.
AprilThe best monthWarm without humidity, the sea already swimmable, and the clearest southern sky of the year.
MayThe rains arrive earlyYaeyama’s rainy season starts before the mainland’s. Heavy, warm and short each day.
JuneRain easing; sagaribana opensThe night-blooming flower starts, and is gone by dawn each morning.
JulyHot, bright and busyPeak sea season. Kabira and Taketomi are at their most crowded.
AugustTyphoon season beginsShips do reroute. When it is clear, the water is at its best all year.
SeptemberThe typhoon peakThe highest risk month for this port. Check rather than assume.
OctoberCalmer, and still warmThe sea holds its heat and the crowds have gone. An excellent month.
Nov–DecMild and openAround 22°C while the rest of Japan closes for winter. The reason this port has a winter season.