CLIMWAT is a climatic database to be used in combination with the computer program CROPWAT. and allows the calculation of crop water requirements, irrigation supply and irrigation scheduling for various crops for a range of climatological stations worldwide.

CLIMWAT provides long-term monthly mean values of nine climatic parameters:

• Mean daily maximum temperature in °C
• Mean daily minimum temperature in °C
• Mean relative humidity in %
• Mean wind speed in km/day
• Mean sunshine hours per day
• Mean solar radiation in MJ/m2/day
• Monthly rainfall in mm/month
• Monthly effective rainfall in mm/month
• Reference evapotranspiration calculated with the Penman-Monteith method in mm/day.

Access CLIMWAT.