Average precipitation in Beijing for many years

537 mm. According to the data in the query, official website shows that the average annual precipitation in Beijing is 537mm, that in 2020 it is 420mm, that in 202/kloc-0 it is 698.4mm, and that in 2022 the total precipitation in Beijing is 492.5mm The sum of 420 plus 492.5 plus 698.4 divided by 3 is 537mm.