Tourists and tourism operators might choose destinations based on information from an evaluation of climate comfort. Strategic tourist planning is becoming more and more dependent on an understanding of how climate conditions for tourism change, especially in quickly rising tourism markets like China in a changing climate. Prior studies in China employed the widely criticised "climate index" with low-resolution climate data. Multidimensional climate indices are required to evaluate the climate for tourism. This study examines interregional variations in the Tourist Climate Comfortable Period (TCCP) across China using the Holiday Climate Index (HCI) and daily data from 775 weather stations. It also analyses the spatiotemporal evolution of TCCP from 1981 to 2010 under a changing climate. The majority of China's regions have "great" weather for tourism so travellers have a wide range of options and can visit whenever they like. China benefits more from the good effects of climate change on climatic conditions for tourism, notably in spring and autumn. The TCCP in most locations indicates a growing tendency. These findings can contribute to improving local or regional environmental conditions by offering some scientific evidence for comprehending human settlement environmental constructs and regional adaptability to global climate change.