Short answer
Umi no Eki Naoshima by Miyanoura Port has indoor small lockers and outdoor small, medium and large lockers. Leave a bag there only if you can return to collect it before continuing.
Best option by situation
Small bag, daytime: check indoor lockers. Carry-on or larger bag: check the outdoor bank's actual opening. Departing to Takamatsu without returning: collect the bag first.
Verified local options
Umi no Eki Naoshima outdoor lockers
At Umi no Eki Naoshima, immediately by Miyanoura Port; identify the outdoor locker bank on arrival.
- Type
- locker
- Hours
- 24 hours, per tourism association
- Price
- Small ¥200; medium ¥300; large ¥500
- Size / weight
- Small / medium / large classes; exact openings not published
- Reservation
- No advance booking stated
- Pickup
- No staffed pickup cutoff; confirm locker-use terms
- Closures
- Availability and individual locker condition can change
Last verified: 2026-09-30. Large class is not a fit guarantee; check the actual opening.
Official source ↗Umi no Eki Naoshima indoor lockers
Inside Umi no Eki Naoshima at Miyanoura Port.
- Type
- locker
- Hours
- 05:30–20:30, per tourism association
- Price
- Small ¥200
- Size / weight
- Small only; exact opening not published
- Reservation
- No advance booking stated
- Pickup
- Retrieve by indoor access closing time
- Closures
- Check current access before relying on late pickup
Last verified: 2026-09-30. Do not use as a large-bag recommendation.
Official source ↗What to do now
- Decide which node you will return to for the bag.
- Check the source and the actual locker opening or counter limit before paying.
- Confirm that your collection time fits the facility's access terms.
Where to go
Miyanoura Port, Naoshima. Use the named facility and on-site signs; no station-floor or port-entrance geometry is implied by this diagram.
If full, closed or too large
Do not assume another locker size solves a width problem. Check the actual opening. If the facility cannot take your bag, keep it with you and ask the official information point for current alternatives. Check the locker size guide for a conservative measurement method.
Onward: Takamatsu Station / Port
If you are not returning here, take the bag onward. Read the next local luggage guide → Check the ferry operator's current routes separately where your trip uses a ferry.