In which month will there be mosquitoes in Beijing?

Some mosquitoes overwinter as adults, which means that mosquitoes always exist, but they don't move when the temperature is low and people can't see them.

The appearance of mosquitoes does not depend on the month, but mainly on the temperature. As long as the temperature reaches about 20 degrees, they come out to move.

Generally speaking, mosquitoes appear in March-April, and the mass reproduction of mosquitoes reaches its peak in May-June.