Monthly Weather Summary

           In June 2025, Thailand experienced rainfall throughout most of the month due to the influence of a moderate to rather active southwest monsoon prevailing over the Andaman Sea, Thailand, and the Gulf of Thailand. This was accompanied by the monsoon trough periodically lying across the upper northern and upper northeastern parts toward the low-pressure cell covering Vietnam and the Gulf of Tonkin almost the entire month. However, the amount and distribution of rain in Thailand were uneven, causing below-normal rainfall in most parts of the country. The average total rainfall in Thailand for this month was approximately 1% above the norm, with most regions reporting below-normal monthly rainfall: the northern region received 26.0 mm (17% of the norm), the central region 55.9 mm (37%), the eastern region 13.0 mm (5%), the southern region (east coast) 0.8 mm (1%), and the southern region (west coast) 81.7 mm (24%), while it was inversely above norm in the northeastern region with 40.4 mm (21%). The monthly mean temperature in Thailand was 0.1°C above the norm.  For more details were as follow.