Mung bean grows in a wide range of climatic conditions. It is relatively a drought-tolerant crop. It grows well in warm and low humid condition under clear sunshine.

• The optimum temperature range for its growth is between 19°C and 31 °C. Seed can be planted when the minimum temperature is above 15 °C.
• Minimum temperature below 10°C and maximum temperature  above 30°C inhibit  mung seed germination.
• Mung bean is responsive to sunshine hour (3.5 to 8.5 hr). Short days result in early flowering, while long days result in late flowering.
• Mung bean grows well at relative humidity ranges from 60% to 85 %.
• Cloudy weather and water logging   affect growth and yield of mung bean.