Reference Evapotranspiration (ETo)
mm/day
Definition: Reference Evapotranspiration (ETₒ) is the hypothetical rate of evaporation and transpiration from a standardized grass surface under ideal conditions.
Reference: This tool utilizes weather data from your location to estimate Reference Evapotranspiration (ETo) using the Hargreaves equation.
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Day of the Year (J):
Radiation (Rad): N/A
Relative Distance Factor (Dr): N/A
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Phi (Φ): N/A
Sha (Sha): N/A
Solar Radiation (Ra): N/A
24-Hour Minimum Temperature: N/A
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24-Hour Mean Temperature: N/A