Heavy Rain Alert For 51 Provinces As Tropical Storm Maiskak Intensifies

Thailand is monitoring heavy rainfall in 51 provinces as tropical storm Maiskak combines with monsoon troughs affecting the northern and upper northeastern regions, along with southwest monsoon winds over the Andaman Sea and Gulf of Thailand. The Meteorological Department forecasted on July 3, 2025, that scattered to heavy and very heavy rain will occur in parts of the northern, northeastern, eastern, and western southern regions over the next 24 hours due to the monsoon troughs merging with tropical storm Maiskak and strong southwest monsoon winds covering the Andaman Sea, Thailand, and the Gulf of Thailand. Residents should beware of dangers from heavy to very heavy rainfall and accumulated precipitation that may cause flash floods and flash flooding, particularly in foothill areas near waterways and low-lying zones.

The upper Andaman Sea will experience strong winds with waves 2-3 meters high, exceeding 3 meters in thunderstorm areas. The lower Andaman Sea and upper Gulf of Thailand will see waves around 2 meters, exceeding 2 meters in thunderstorm zones. Mariners in the Andaman Sea and Gulf of Thailand are advised to navigate cautiously and avoid thunderstorm areas. Small boats in the upper Andaman Sea should remain ashore.

The tropical depression in the upper South China Sea has strengthened into tropical storm Maiskak and is forecast to move through the Paracel Islands and make landfall on southern China's coast between July 4-6, 2025, with no direct impact on Thailand's weather.

Weather forecast for Thailand from 6:00 AM today to 6:00 AM tomorrow:

Northern Region: 80% chance of thunderstorms with very heavy rain in some areas across Mae Hong Son, Chiang Mai, Chiang Rai, Lampun, Lamphun, Phayao, Nan, Phrae, Uttaradit, Tak, Kamphaeng Phet, Phichit, and Phetchabun. Low 23-25°C, high 32-35°C. Southwest winds 10-20 km/h.

Northeastern Region: 80% chance of thunderstorms with very heavy rain in some areas across Loei, Nong Khai, Bueng Kan, Nong Bua Lam Phu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Mukdahan, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, and Ubon Ratchathani. Low 23-26°C, high 32-35°C. Southwest winds 10-20 km/h.

Central Region: 60% chance of thunderstorms with heavy rain in some areas across Nakhon Sawan, Uthai Thani, Suphan Buri, Saraburi, Lopburi, Kanchanaburi, and Ratchaburi. Low 24-26°C, high 33-35°C. Southwest winds 10-25 km/h.

Eastern Region: 70% chance of thunderstorms with very heavy rain in some areas across Nakhon Nayok, Prachuap Khiri Khan, Sa Kaeo, Chachoengsao, Chonburi, Rayong, Chanthaburi, and Trat. Low 24-28°C, high 31-35°C. Southwest winds 20-35 km/h. Waves around 2 meters, exceeding 2 meters in thunderstorm areas.

Southern Region (Eastern Coast): 60% chance of thunderstorms with heavy rain in some areas across Phetchaburi, Prachuap Khiri Khan, Chumphon, and Surat Thani. Low 24-25°C, high 32-34°C. Southwest winds 20-35 km/h from Surat Thani northward. Waves 1-2 meters offshore, exceeding 2 meters in thunderstorm areas.