Monthly Weather Summary

               In April 2026, the heat low-pressure cell covered upper Thailand or almost the entire month, resulting warmer air over upper Thailand and very hot weather occurring continuously in many areas throughout most of the month. Southern Thailand also experienced generally hot weather. Consequently, the monthly mean temperature across Thailand was above normal in all regions. For rainfall, the prevailing of the southerly wind over upper Thailand throughout the month. Moreover, the extending of the high-pressure area from China to cover intermittently the northeastern Thailand and the South China Sea during the second half of the month. These conditions caused rainfall over upper Thailand with gusty wind in several place during this time. In southern Thailand, the easterly and southeasterly winds prevailed over the Gulf of Thailand and southern region, resulting in rainfall almost the entire month. The average total rainfall in Thailand for this month was approximately 45.9 mm (51%) below the norm, with monthly rainfall was below normal in almost regions i.e. northern region 41.2 mm (59%), central region 62.4 mm (80%), eastern region 69.9 mm (69%), southern region (east coast) 63.2 mm (9%), and the southern region (west coast) 98.8 mm (61%) on the contrary with above normal rainfall in northeastern region 6.8 mm (8%).