Is there a big temperature difference in Shanghai in winter?

Shanghai is near the sea, and it is wet and cold in winter, with an average temperature of 3-5 degrees. When the temperature is high, it can reach 10 degree or above.

Generally, it will be below zero only when cold air patronizes, and it is usually as low as MINUS four or five degrees.

Cold air usually stays for three days, and the weather begins to get warmer on the fourth day.