The average annual water vapor pressure value for Saada Sa`dah over the past 30 years is 10.25 kPa (kilopascals).
In city of Saada Sa`dah, the water vapor pressure in January is 0.81 kPa; The water vapor pressure in February is 0.83 kPa; The water vapor pressure in March is 0.9 kPa; The water vapor pressure in April is 0.93 kPa; The water vapor pressure in May is 0.89 kPa; The water vapor pressure in June is 0.77 kPa; The water vapor pressure in July is 0.97 kPa; The water vapor pressure in August is 1.06 kPa; The water vapor pressure in September is 0.77 kPa; The water vapor pressure in October is 0.71 kPa; The water vapor pressure in November is 0.8 kPa; The water vapor pressure in December is 0.81 kPa.
The vapour pressure of water is the pressure exerted by molecules of water vapor in gaseous form (whether pure or in a mixture with other gases such as air). The saturation vapour pressure is the pressure at which water vapour is in thermodynamic equilibrium with its condensed state.
Address: Saada, Sa`dah, Yemen.