In Beijing spring begins in April and last until May. From April, temperature rises quickly day by day with a sharp rise in temperatures and a large temperature difference between day and night. Sometimes differences between 15 degrees Celsius. Generally, the air is very dry during spring. The average temperature is 13.1℃ in April and 19.9℃ in May. The temperature is high during daytime and will fall at night. Sand storms might occur from the Gobi Desert region and Mongolia. Because the weather is relatively comfortable, plan of your spring outings and outdoor activities.