While during 23-25 Jul, the southwest monsoon covers Andaman Sea, Thailand and the Gulf of Thailand will weaken with Monsoon Trough will move to across Myanmar and upper part of Laos so makes Thailand have decreasing rain and then around 26-27 Jul, the upper Thailand will have more rain because monsoon trough will lie across Thailand again in the upper part of North and the Northeast as well as the southwest monsoon covers Andaman Sea, Thailand and the Gulf of Thailand will back to strong.