This water vapour (WV) climate data record (CCI WV-strato or WV_cci CDR-3) has been generated within the European Space Agency (ESA) Water Vapour Climate Change Initiative (Water Vapour_cci). CCI WV-strato is a merged product based on a number of WV datasets obtained from limb and solar occultation satellite instruments. CCI WV-strato features zonal monthly mean vertically resolved water vapour in the stratosphere, covers a pressure range from 300 to 0.1 hPa at 5 degree latitudinal resolution, and spans the time period between 1985 and 2019.This version of the data is v3.3.