Daily Weather Forecast
Daily Weather Forecast
Daily Weather Forecast Infographic
18 May 2026
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Daily Weather Forecast
Announcement Date 18 May 2026
General Situation
18 May 2026The rather strong southwest monsoon prevaills over the upper Andaman Sea and Thailand while the low pressure cell covers the coast of upper Vietnam. Isolated heavy rains are forecast in the North, the Northeast and the Cenral while isolated very heavy rains are possible in the East and the South (west coast). People should beware of heavy to very heavy rains and accumulation that may cause flash floods and overflows, especially along waterways near foothills and lowlands. The rather strong wind forces the waves in the upper Andaman Sea up to be 2–3 meters high and above 3 meters high in thundershowers. In the lower Andaman Sea and the upper Gulf, the waves are expected to be about 2 meters high and above 2 meters high in thundershowers. All ships should proceed with caution and keep off thundershowers, small boats in the upper Andaman Sea keep ashore.
Announcement Date 18 May 2026
Thailand Weather Forecast
18:00 Today To 18:00 TomorrowNorthern
Scattered thundershowers and isolated heavy rain in Nan, Phrae, Uttaradit, Tak, Kamphaeng Phet, Phichit, Phitsanulok and Phetchabun. Minimum temperature 23-26 °C. Maximum temperature 35-38 °C. Southwesterly winds 10-20 km./hr.
Northeastern
Fairly widespread thundershowers and isolated heavy rain in Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Khon Kaen, Kalasin, Mukdahan, Yasothon, Amnat Charoen, Nakhon Ratchasima, Si Saket and Ubon Ratchathani. Minimum temperature 24-26 °C. Maximum temperature 32-35 °C. Southwesterly winds 10-20 km./hr.
Central
Fairly widespread thundershowers and isolated heavy rain in Nakhon Sawan, Uthai Thani, Chai Nat, Sing Buri, Ang Thong, Lop Buri, Saraburi, Phra Nakhon Si Ayutthaya, Suphan Buri, Kanchanaburi and Ratchaburi. Minimum temperature 24-26 °C. Maximum temperature 35-36 °C. Southwesterly winds 10-20 km./hr.
Eastern
Scattered thundershowers and isolated heavy to very heavy rain in Nakhon Nayok, Prachin Buri, Chachoengsao, Chon Buri, Rayong, Chanthaburi and Trat. Minimum temperature 25-27 °C. Maximum temperature 32-35 °C. Southwesterly winds 20-35 km./hr. Wave height about 2 meters and above 2 meters in thundershowers.
Southern (East Coast)
Scattered thundershowers and isolated heavy rain in Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung and Songkhla. Minimum temperature 23-25 °C. Maximum temperature 34-35 °C. Surat Thani upwards: Southwesterly winds 20-35 km./hr. Wave height about 2 meters and above 2 meters in offshore and thundershowers. Nakhon Si Thammarat downwards: Southwesterly winds 15-35 km./hr. Wave height 1-2 meters, about 2 meters offshore and above 2 meters in thundershowers.
Southern (West Coast)
Fairly widespread thundershowers and heavy rain in many areas with isolated very heavy rain in Ranong, Phang Nga, Phuket, Krabi, Trang and Satun. Minimum temperature 22-24 °C. Maximum temperature 31-34 °C. From Phuket upward: Southwesterly winds 20-40 km./hr. Wave height 2-3 meters and above 3 meters in thundershowers. From Krabi downward: Southwesterly winds 20-35 km./hr. Wave height about 2 meters and above 2 meters in thundershowers.
Bangkok Metropolitan
Scattered thundershowers. Minimum temperature 26-28 °C. Maximum temperature 34-36 °C. Southwesterly winds 10-20 km./hr.
Announcement Date 18 May 2026