How it works
Tell When to Go your priorities (food, art, coast, hiking, and so on) and how long you can travel, and it scores the year for you, surfacing the windows where your kind of trip is at its best and suggesting concrete dates. Seasonality scores are based on weather, tourism patterns, and local events.
Seasonality calendar on city pages
Every city page includes a Season Calendar showing 12-month seasonality scores. Gold-highlighted months are the recommended peak. The calendar also powers the sparkline on city cards.
Locking dates for a trip
From a trip, the same tool runs against the cities you've shortlisted: it weighs their seasonality together, suggests a travel window, and lets you lock your dates in. Locked dates then drive the itinerary builder, ticket timing, and the day-of tools.