Our staff have kept a dive log since 2007. From 1672 of those entries we summarised, month by month, the water temperature, visibility, the dive sites we visited most and the marine life we met most often.
JanuaryWater: 12 to 13°C
Visibility: 10 to 15 m
Often seen: ainame (fat greenling), chagara (a goby), Japanese rockfish (mebaru)
FebruaryWater: 10 to 11°C
Visibility: 10 to 15 m
Often seen: emura mino umiushi (a nudibranch), hoteiuo (smooth lumpsucker), chagara (a goby)
MarchWater: 10 to 11°C
Visibility: 5 to 10 m
Often seen: dangouo (a tiny lumpsucker), hoteiuo (smooth lumpsucker), emura mino umiushi (a nudibranch)
AprilWater: 10 to 12°C
Visibility: 5 to 10 m
Often seen: emura mino umiushi (a nudibranch), akaera mino umiushi (a nudibranch), dangouo (a tiny lumpsucker)
MayWater: 12 to 15°C
Visibility: 9 to 12.5 m
Often seen: Japanese rockfish (mebaru), emura mino umiushi (a nudibranch), dangouo (a tiny lumpsucker)
JuneWater: 16 to 19°C
Visibility: 10.5 to 15 m
Often seen: kobudai (Asian sheepshead wrasse), Japanese rockfish (mebaru), damselfish
JulyWater: 20 to 23°C
Visibility: 10 to 15 m
Often seen: kobudai (Asian sheepshead wrasse), chagara (a goby), Japanese rockfish (mebaru)
AugustWater: 24 to 26.1°C
Visibility: 12.5 to 20 m
Often seen: chagara (a goby), damselfish, kobudai (Asian sheepshead wrasse)
SeptemberWater: 25 to 26.5°C
Visibility: 12.5 to 17.5 m
Often seen: kobudai (Asian sheepshead wrasse), damselfish, chagara (a goby)
OctoberWater: 20.4 to 23°C
Visibility: 10 to 15 m
Often seen: kobudai (Asian sheepshead wrasse), damselfish, chagara (a goby)
NovemberWater: 17 to 19°C
Visibility: 10 to 12.5 m
Often seen: kobudai (Asian sheepshead wrasse), Japanese rockfish (mebaru), chagara (a goby)
DecemberWater: 15 to 16°C
Visibility: 10 to 12.5 m
Often seen: ainame (fat greenling), dangouo (a tiny lumpsucker), kobudai (Asian sheepshead wrasse)
These figures are guides based on what our staff wrote in their dive logs. Conditions vary a lot from year to year and day to day. For the latest conditions, see Sea Conditions.