June-September is the rainy season 10, and the following May is the dry season. The location of the pressure belt and the wind belt moves southward, which is the result of the simultaneous influence of the northeast trade wind and the northeast monsoon blowing from the inland of Asia to the ocean and deflecting at low latitudes.

In the rainy season, due to the northward movement of the pressure belt and wind belt in summer, this area is affected by the southwest monsoon caused by the deflection of the southeast trade wind across the equator and the monsoon blowing from the ocean to the land caused by the difference in thermal properties between land and sea.

May to 65438+ 10 rainy season, 165438+ 10 dry season. In summer in the northern hemisphere (July), the southeast monsoon in the southern hemisphere deflects northward and crosses the equator to the right, forming the southwest monsoon; In summer in the southern hemisphere (65438+ 10), the northeast trade winds in the northern hemisphere deflect southward and cross the equator to the left, forming the northwest monsoon.