According to the National Centre for Hydro-Meteorological Forecasting (NCHMF) , the heat wave is expected to end on around July 4 and 5. The Central Highlands enjoys cooler weather of around 30-33 degrees Celsius in the next ten days while temperature in the South is below 35 degrees Celsius, the centre forecast. The southwest monsoon causes rough sea along coastal provinces from Binh Thuan in southern central region to southernmost Ca Mau.