Climate Two monsoons set the rhythm of rural life in Cambodia. The cool, dry, northeastern monsoon blows from about November to March and brings little rain. From May to early October, the south-western monsoon picks up moist air from over the Indian Ocean, bringing strong winds, high humidity, and heavy rains throughout the country. The weather is transitional between the seasons, but even during the wet season it rarely rains in the morning. Most of the rain comes in afternoon downpours.