The measured travel calendar
When to go. Every city, every month, measured.
87 cities × 12 months, banded from 5-year Open-Meteo climate records — average highs, rain days, rain hours, humidity. Every verdict shows its threshold. No “high season” hand-waving.
258 of 1044 city-months measure ideal · thresholds disclosed in the methodology · same model as the Best-Months research index
The full matrix
How to read it: each cell is one city-month, banded by measured thresholds — Ideal means 18–29 °C average highs, ≤13 rain days, ≤90 mm, and not muggy; Difficult means below 5 °C, above 37 °C, ≥20 rain days, or ≥200 mm. Every cell links to that city’s month guide. Full thresholds and provenance in the methodology.