Weather is not a plot twist in Japan outdoor travel — it is part of the calendar.

Decide by 10:00–11:00

• Check the activity you booked (ski lifts, boat SMS, surf wind).
• Call the day early enough to still reach an onsen or city food window.

Soft-day menu

• Onsen / ryokan day bath — okonsen.net
• Ramen / comfort food — okramen.net
• Scenic dry golf (if you packed for it) — okcaddie.net
• Museum / station-area walk near your base — zero FOMO required.

What not to do

• Do not invent a brand-new region three hours away.
• Do not force a second high-risk session in the same storm.

Keep JPFun as the primary pin map; use soft days to protect the overall mood of the trip.