Expected next month will be a change from the summer months into the rainy season. Initially, the weather is unpredictable The upper Thailand will still be hot. Are interspersed with thundershowers in some areas. To the south, scattered rain with heavy to very heavy especially in the western region. Then around mid onwards Southwest monsoon prevails over the Andaman Sea. Thailand and the Gulf of Thailand It has a rather strong periodically. With a trough of low pressure lies across the central and eastern regions. This makes the amount and distribution of rainfall is increasing. Most of the Gulf of Thailand with wave height about 1 meter Andaman coast with waves 2-3 meters high expected rainfall mostly below normal.