Shoulder Season Is the Whole Trick

Accommodation pricing follows school holidays far more closely than it follows weather. The fortnight after term restarts is routinely a third cheaper than the fortnight before, in a climate that has not noticed the difference.

What we booked, twice

Same room, same city	Peak week	Six weeks later
Nightly rate	£164	£92
Minimum stay	5 nights	2 nights
Museum queue, observed	50 min	under 10 min
Mean daytime high	29°C	24°C

Everything in the second column is better, including the weather for anyone who intends to walk. The trade is that some mountain lifts, seasonal ferries and small-town restaurants close, which matters enormously in a village and barely at all in a city.

Late September, same square, no queue: the difference a term date makes to a city that has not changed at all.

Where shoulder season fails

Island and ferry routes — services can drop from daily to twice weekly, which strands an itinerary.
Alpine towns between seasons — lifts shut, trails still snowbound, half the town closed for six weeks.
Anywhere with a monsoon — the price drop is the market telling you something accurate.

Check the local school calendar, not the tourist board's season chart. The calendar is what the pricing engine is reading.

Booking mechanics that held up

Free-cancellation rate first, then re-check the same room at six weeks and again at three; on the routes we tracked the price fell twice as often as it rose outside peak. Book directly with the property once you have found it on an aggregator — in eleven of fourteen cases the direct rate matched or beat it, and the cancellation terms were plainer.