China's biggest domestic travel peaks are the Chinese New Year holiday, usually in January or February, Labour Day around early May, and National Day Golden Week from 1 October. Major attractions and transport networks can be extremely busy during these periods, with tickets and hotels harder to secure. Summer holidays in July and August also bring family travel. Late March to April and mid-September, outside major public holidays, can offer a more manageable experience. Always check the lunar calendar and official holiday dates before booking.

China's weather-related disaster risks vary greatly by region. The main flood season is generally from June to August, when monsoon rain can cause river flooding and landslides in central and southern areas. Typhoons affect the southeast coast most often from July to September, while northern and western regions may face drought, dust storms or severe winter weather. Earthquakes are a year-round risk in some western and southwestern provinces. Spring and autumn can be more comfortable for travel, but risks depend heavily on the specific destination and current conditions.

China spans several climate zones, so seasonal conditions vary widely. Spring, roughly April to May, and autumn, September to October, are often comfortable for visiting Beijing, Xi'an and eastern cities. Summer from June to August can be hot, humid and rainy in the south and east, while northern cities can also experience high temperatures. Winter is cold in the north, while southern regions are milder but can be damp. Western and high-altitude areas have distinct conditions, so trip timing should be matched to the itinerary.