Spot guide
Compare a walkable village square with a southern-horizon viewpoint, alongside island transport status.
Kozushima is an overnight island destination reached from Tokyo by ferry or flight. Check the sailing, arrival port, dark local roads, and official warnings separately from the sky score.
Tokyo via Takeshiba or Chofu
Ferry or flight plus an island stay
Checks before departure
Forecast-grid data from Open-Meteo, not a live observation.
Sun, Jul 19
Tokyo via Takeshiba or Chofu · Altitude not shown until sourced · Asia/Tokyo
Promising skies. Check access first.
Walkable from the village. Verify ferry operations and JMA warnings before setting out.
Star Index
Cloud
20%
Rain chance
1%
Moon
33%
Forecast-grid data from Open-Meteo, not a live observation.
Tokyo via Takeshiba or Chofu
Jetfoil, overnight ferry, and flight decisions can change with sea or weather conditions. Recheck each operator’s Kozushima status on the day of departure.
Ferry or flight plus an island stay
Yotane Square is walkable from the village; Miura Bay Observatory is a drive. Plan the return route and carry a low-impact light.
Checks before departure
A planning option is not a safety clearance. Recheck the day’s sailings, warnings, closures, and island roads in the linked official sources.
Sky conditions only
Give your eyes about 10 minutes to adapt to the dark after arrival. Keep flashlights and vehicle lights low for other stargazers.