Weather Advisory
Subject: Heavy to very heavy Rain in Thailand
Strong wind-waves in the Upper Andaman Sea
(Effect during 1 - 3 July 2026)
No.11 (101/2026)
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During 1-3 July 2026, the monsoon through lies across the North and the upper
Northeast. Meanwhile, the rather strong southwest monsoon prevails over the
Andaman Sea, Thailand and the Gulf with more rains and isolated heavy to very
heavy rains in Thailand especially in the upper North, the East and the
Southwest. 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.
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 upper Gulf, the wave are about 2
meters high 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.
In
addition, at 04.00
p.m. LST (1 July 2026), tropical depression over the middle South China Sea was
centered at latitude 14.0 degrees north and longitude 116.5 degrees
east with maximum sustained winds about 55 km/hr. This storm is moving west with a
speed of 30 km/hr. This
storm is forecasted to intensify to tropical storm and during 4–6 July 2026, it
is expected to move through Hainan Island and make landfall over the south of
China with no direct effect on Thailand’s weather.
This
advisory is in effect on 1 July 2026, at 5.00 p.m.
This next issue will be on 2 July 2026, at 5.00 a.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee Yavinchan)
Director-General
Thai Meteorological Department