What month does it usually start to warm in Hunan?

It starts in March. In spring, Hunan begins to warm up gradually in late March or early April, and the temperature will gradually warm up. Summer begins to enter the hot season from the end of June to the beginning of July, and the temperature often reaches above 30℃, which is the hottest period in Hunan. The temperature in autumn is pleasant, most of the time around 20℃, which is a good season for Hunan tourism. Hunan is a province in central China, located in the transitional zone between subtropical zone and temperate zone, with mild and humid climate and distinct four seasons.