The honest version — including the months we'd steer our own families away from.
The short answer: Best overall: September–October. Pleasant runner-up: April–May. Braving July–August means heat, rain and peak crowds; winter is cold and dry but blissfully quiet — and a dusting of snow makes the Great Wall unforgettable.
Dry, crisp air and Beijing's bluest skies. The hills around Mutianyu turn red and gold from mid-October. Book early — this is peak season for good reason, and the first week of October is a national holiday crush.
Warm days, blossoms in the parks and comfortable walking weather. Occasional spring winds can carry dust, but sightseeing conditions are otherwise excellent and crowds are moderate.
Hot (regularly 32°C+) and humid, with most of the year's rain falling in July and August — plus school-holiday crowds. Start days early, plan indoor afternoons, and the city still works.
Cold and dry, often −5 to 5°C, with clear light and almost no queues. Hotel prices drop sharply. If snow falls, an empty, white Great Wall is one of China's great sights.
Because every tour we run is private, dates and routes stay flexible: we watch the forecast with you and re-order days to chase the clear morning or dodge the downpour. Tell us your travel window and we'll tell you honestly what it will feel like — and how we'd shape the days.