Weather Advisory
Subject: Cool to cold in
Thailand
Heavy Rain in the South and
Strong wind-waves in the Gulf
(Effect until 23
November 2025)
No.7 (346/2025)
During
18-23 November 2025,
another strong high-pressure system from China extend to upper Thailand and the
South China Sea with variable weather and isolated rains in the upper country for
the first the period. After that during 19 – 20 November 2025, morning cool
to cold and a decrease in temperature with strong winds are forecast in the
upper country. A decrease in temperature by 5–7 °C are forecast in the
Northeast and 4-6 °C are forecast in the North while a decrease in temperature
by 2–5 °C are forecast in the Central including Bangkok and its vicinity and
the East regions. People in upper the country should beware of variable
weather, keep healthy due to changeable weather and beware of fire due to dry
air and strong wind. Farmers should prevent for crop damage.
The
strengthening northeast monsoon will prevail over the Gulf, the South and the
Andaman Sea while the easterly wave will move pass the
South with more rains and isolated heavy to very heavy rains in the South during
18 – 23 November 2025. The rather strong
wind forces the waves in the Gulf up to be 2-3 meters high and above 3 meters
high in thundershowers while the waves in the upper Andaman Sea offshore
are likely about 2 meters high, 2–3
meters high offshore and above 3 meters high in thundershowers. People in the
South should beware of heavy to very heavy rains and accumulations that may
cause flash flood and overflows, especially along the waterways near foothills
and lowlands. People along the Gulf shore should beware of inshore surges. All ships should proceed with caution and keep off
thundershowers, small boats in the Gulf and the Andaman Sea offshore keep
ashore during 19-23 November 2025.
This advisory is in effect on 18 November 2025, at 5.00
a.m.
This next issue will be on 18 November 2025,
at 5.00 p.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee
Yavinchan)
Director-General
Thai Meteorological
Department