Ø  It is essentially a warm and humid region crop and grows well in areas of moderate climate throughout the year.

Ø  Maize grows well in areas where the mean temperature is around 240c and night temperature is above 150c.

Ø  No maize cultivation is possible in areas where mean summer temperature is below 190c or where average night temperature during the three summer months falls below 210c. high night temperatures also result in less yield.

Ø  During the flowering period if the maximum temperature is around 350C or more, the fertilization will be hampered and as a result yield will be poor.

Ø   Maize is adapted to humid climate and  has moderate to high water requirement depending upon type of soil, season. it requires 50-75 cm of rainfall.

Ø   The crop requires high amount of water during its inflorescence.

Ø  Maize is very sensitive to excess water and hence it is desirable to plant it on ridges.