Weather Advisory
Subject: Heavy to Very Heavy Rain in Thailand
and Strong wind-waves in the upper Andaman Sea
(Effect during 11-13 July 2025)
No.2 (175/2025)
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During 11-13 July 2025, the moderate southwest monsoon prevailing over the Andaman Sea, Thailand and the Gulf, While the active monsoon through will lie across upper Thailand and the upper South region. Isolated heavy to very heavy rains are likely in Thailand. People in the country should beware of heavy to very heavy rains and accumulation that may cause flash floods, overflows and landslides especially along the waterways near foothills and lowlands and should keep healthy due to the variable weather. Farmers should prepare by improving drainage systems in their agricultural areas to mitigate the potential impacts and damage to crops and livestock.
Affected areas are as follows:
On 11 July 2025
North: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Phrae, Uttaradit, Sukhothai, Tak, Kamphaeng Phet, Phichit, Phitsanulok and Phetchabun.
Northeast: Loei, Nong Khai, Bueng Kan, Udon Thani, Nong Bua Lamphu, Sakon Nakhon,
Nakhon Phanom, Mukdahan, Amnat Charoen and Ubon Ratchathani.
Central: Nakhon Sawan, Uthai Thani, Kanchanaburi and Ratchaburi.
East: Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chonburi, Rayong, Chanthaburi and Trat.
South: Chumphon, Surat Thani, Nakhon Si Thammarat, Ranong, Phang Nga, Phuket and Krabi.
On 12 July 2025
North: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Phrae, Uttaradit, Sukhothai, Tak, Kamphaeng Phet, Phichit, Phitsanulok, and Phetchabun.
Northeast: Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Khon Kaen, Kalasin, Mukdahan, Maha Sarakham, Roi Et, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, Surin, Sisaket and Ubon Ratchathani.
Central: Nakhon Sawan, Uthai Thani, Chai Nat, Sing Buri, Ang Thong, Lop Buri, Saraburi,
Phra Nakhon Si Ayutthaya, Suphan Buri, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon and Samut Songkhram including Bangkok and its vicinity.
East: Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chonburi, Rayong, Chanthaburi and Trat.
South: Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Ranong, Phang Nga, Phuket, Krabi, Trang, and Satun.
On 13 July 2025
North: Mae Hong Son, Chiang Mai, Chiang Rai, Phayao, Nan, Tak, Phichit,
Phitsanulok and Phetchabun.
Northeast: Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon,
Nakhon Phanom, Chaiyaphum, Khon Kaen, Kalasin, Mukdahan, Maha Sarakham,
Roi Et, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, Surin, Sisaket
and Ubon Ratchathani.
Central: Nakhon Sawan, Uthai Thani, Chainat, Lopburi, Saraburi, Suphanburi, Kanchanaburi, Ratchaburi Nakhon Pathom, Samut Sakhon and Samut Songkhram including Bangkok and its vicinity.
East: Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chonburi, Rayong, Chanthaburi and Trat.
South: Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Ranong, Phang Nga, Phuket, and Krabi.
The rather strong wind forces the waves in the upper Andaman Sea up to 2-3 meters high and above 3 meters high in thundershowers. In the lower Andaman Sea and the upper Gulf, the wave high about 2 meters and above 2 meters high in thundershowers. All ships in the Andaman Sea and the Gulf should proceed with caution and keep off thundershowers, small boats in the upper Andaman Sea should keep ashore until 15 Jul.
This advisory is in effect on 11 July 2025, at 5.00 a.m.
This next issue will be on 11 July 2025, at 5.00 p.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee Yavinchan)
Director-General
Thai Meteorological Department
