Weather Advisory
Subject: Cool to cold in
Thailand
Heavy Rain in the South and
Strong wind-waves in the Gulf
(Effect during 17-23 November
2025)
No.4 (343/2025)
During 17-23 November 2025, another
strong high-pressure system from China will extend to upper Thailand and the
South China Sea with thundershower and gust in the first period. This variable conditions will start over the Northeast in Ubon
Ratchathani, Si Sa Ket, Surin, Buri Ram and Nakhon Ratchasima, then will affect to the rest region. After that
decrease in temperature and strong winds. A decrease in temperature by 4–7 °C are forecast in the Northeast while a
decrease in temperature by 2–4 °C are forecast in the North, the Central
including Bangkok and its vicinity and the East regions. People in upper the
country should beware severe condition and keep healthy due to change condition
the weather with cooler and beware of fire due to strong winds and dry air. Farmers
should prevent for crop damage.
The
strengthening northeast monsoon will prevail over the Gulf and the South while
the easterly wave will move over the South with more rains and isolated heavy
to very heavy rains in the South. The rather
strong wind forces the waves in the Gulf up to 2-3 meters high and above 3
meters high in thundershowers while the waves in the upper Andaman Sea
are likely about 2 meters high, 2–3 meters offshore and above 3 meters high in
thundershowers. People along the South (east coast) should beware of severe
condition and accumulated rain that may cause flash flood and overflows,
especially along the waterways near foothills and lowlands including should
beware of inshore surges. All ships should proceed with caution and keep off
thundershowers. Small boats in the Gulf should keep ashore during 19-23 November 2025.
This advisory is in effect on 16 November 2025, at 5.00
p.m.
This next issue will be on 17 November 2025, at 5.00 a.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee
Yavinchan)
Director-General
Thai Meteorological
Department