Vavuniya has a
tropical savanna climate (
Köppen:
As) with warm to hot temperatures throughout the year and a distinct
wet season from October to December. Temperatures are cooler from November to February compared to the rest of the year. {{Weather box | width = auto | metric first = yes | single line = yes | location = Vavuniya (1991–2020) | Jan record high C = 34.0 | Feb record high C = 36.0 | Mar record high C = 38.8 | Apr record high C = 40.1 | May record high C = 38.8 | Jun record high C = 38.5 | Jul record high C = 38.8 | Aug record high C = 38.4 | Sep record high C = 39.1 | Oct record high C = 38.1 | Nov record high C = 35.0 | Dec record high C = 33.0 | year record high C = | Jan high C = 29.9 | Feb high C = 31.5 | Mar high C = 34.3 | Apr high C = 34.9 | May high C = 34.3 | Jun high C = 34.4 | Jul high C = 34.7 | Aug high C = 34.6 | Sep high C = 34.5 | Oct high C = 32.6 | Nov high C = 30.6 | Dec high C = 29.6 | year high C = 33.0 | Jan mean C = 25.5 | Feb mean C = 26.4 | Mar mean C = 28.4 | Apr mean C = 29.5 | May mean C = 29.7 | Jun mean C = 29.8 | Jul mean C = 29.9 | Aug mean C = 29.7 | Sep mean C = 29.6 | Oct mean C = 28.2 | Nov mean C = 26.7 | Dec mean C = 25.8 | year mean C = 28.3 | Jan low C = 20.9 | Feb low C = 21.1 | Mar low C = 22.4 | Apr low C = 24.0 | May low C = 25.0 | Jun low C = 25.1 | Jul low C = 24.9 | Aug low C = 24.7 | Sep low C = 24.4 | Oct low C = 23.6 | Nov low C = 22.7 | Dec low C = 21.9 | year low C = 23.4 | Jan record low C = 12.4 | Feb record low C = 10.5 | Mar record low C = 13.4 | Apr record low C = 15.3 | May record low C = 17.8 | Jun record low C = 18.8 | Jul record low C = 18.2 | Aug record low C = 18.2 | Sep record low C = 18.5 | Oct record low C = 16.0 | Nov record low C = 16.5 | Dec record low C = 13.0 | year record low C = | precipitation colour = green | Jan precipitation mm = 107.0 | Feb precipitation mm = 76.2 | Mar precipitation mm = 43.1 | Apr precipitation mm = 123.1 | May precipitation mm = 95.4 | Jun precipitation mm = 21.1 | Jul precipitation mm = 36.9 | Aug precipitation mm = 63.9 | Sep precipitation mm = 88.7 | Oct precipitation mm = 230.0 | Nov precipitation mm = 276.0 | Dec precipitation mm = 249.1 | year precipitation mm = 1410.5 | unit precipitation days = 1.0 mm | Jan precipitation days = 7.1 | Feb precipitation days = 4.7 | Mar precipitation days = 3.9 | Apr precipitation days = 9.2 | May precipitation days = 5.8 | Jun precipitation days = 2.1 | Jul precipitation days = 2.6 | Aug precipitation days = 4.1 | Sep precipitation days = 5.7 | Oct precipitation days = 13.3 | Nov precipitation days = 17.1 | Dec precipitation days = 12.5 | year precipitation days = 88.0 | source 1 =
NOAA == Demographics ==