Mongu has a
tropical savanna climate (
Köppen Aw). The area has an annual average rainfall of 945 mm falling in the rainy season from late October to April. The flood usually arrives by January, peaks in April and is gone by June, leaving a floodplain green with new grass on which a population of about 250,000 moves in to graze a similar number of cattle, catch fish and raise crops in small gardens. Mongu is hot from September to December, with a mean maximum for October of 35.4 °C, and cool from May to August, with a mean maximum in June of 26.9 °C and a mean minimum of 10.3 °C. {{Weather box | width = auto | collapsed = | metric first = yes | single line = yes | location = Mongu (1991–2020) | Jan record high C = 39.0 | Feb record high C = 36.9 | Mar record high C = 38.2 | Apr record high C = 39.0 | May record high C = 34.7 | Jun record high C = 33.8 | Jul record high C = 35.5 | Aug record high C = 40.5 | Sep record high C = 41.5 | Oct record high C = 41.5 | Nov record high C = 39.8 | Dec record high C = 38.0 | year record high C = | Jan high C = 29.8 | Feb high C = 29.7 | Mar high C = 30.2 | Apr high C = 30.9 | May high C = 29.6 | Jun high C = 27.8 | Jul high C = 27.9 | Aug high C = 31.1 | Sep high C = 34.7 | Oct high C = 35.6 | Nov high C = 32.5 | Dec high C = 30.3 | year high C = 30.8 | Jan mean C = 24.7 | Feb mean C = 24.6 | Mar mean C = 24.7 | Apr mean C = 23.9 | May mean C = 21.7 | Jun mean C = 19.3 | Jul mean C = 19.1 | Aug mean C = 22.1 | Sep mean C = 25.9 | Oct mean C = 27.5 | Nov mean C = 26.0 | Dec mean C = 24.8 | year mean C = 23.7 | Jan low C = 19.5 | Feb low C = 19.5 | Mar low C = 19.2 | Apr low C = 16.9 | May low C = 13.7 | Jun low C = 10.7 | Jul low C = 10.2 | Aug low C = 13.1 | Sep low C = 17.0 | Oct low C = 19.4 | Nov low C = 19.4 | Dec low C = 19.3 | year low C = 16.5 | Jan record low C = 12.9 | Feb record low C = 11.5 | Mar record low C = 9.1 | Apr record low C = 7.5 | May record low C = 2.7 | Jun record low C = -1.6 | Jul record low C = 0.3 | Aug record low C = -1.6 | Sep record low C = 7.4 | Oct record low C = 9.2 | Nov record low C = 11.1 | Dec record low C = 13.8 | year record low C = | precipitation colour = green | Jan precipitation mm = 229.3 | Feb precipitation mm = 210.8 | Mar precipitation mm = 141.0 | Apr precipitation mm = 29.8 | May precipitation mm = 5.1 | Jun precipitation mm = 0.3 | Jul precipitation mm = 0.0 | Aug precipitation mm = 0.0 | Sep precipitation mm = 2.1 | Oct precipitation mm = 20.3 | Nov precipitation mm = 95.1 | Dec precipitation mm = 227.7 | year precipitation mm = 965.7 | source 1 =
NOAA (humidity, sun 1961–1990) ==Ecology==