Northeast region experiences Savanna (Aw) climate which marks humid hot and dry weather alternatively
with medium rain volume. There are 3 seasons including winter, rainy season and summer.
Summer is between February and May. It is influenced by southeast monsoon from South China Sea and the
Gulf of Thailand. Due to the long distance from the sea, the weather is hot and dry. The province that
has highest temperature is Udon Thani.
Rainy season is between May and October with an influence of depression. The province that receives
heaviest rainfalls is Nakhon Phanom and the lightest rainfall is in Nakhon Ratchasima. However, the amount
of the rainfall is quite uneven although 80% of the total rainfall occurs in August and September. The
amount of rainfall in northeast region is somewhat unpredictable. Average annual precipitation varies
from 2,000 mm in some areas to 1,270 mm in the southwestern provinces such as Buriram, Chaiyaphum, Khon
Kaen, Maha Sarakham and Nakhon Ratchasima. During the rainy season, some natural tourist destinations are
closed at certain period during this season as it is the time for the plants to regenerate and it could be
dangerous for tourists due to the possible flood and landslide.
Winter is between October to February. The region is influenced by northeast monsoon. The beginning to
the end of October still experiences some rains. Then the cold wind and high pressure comes from China and
covers the area in the north and northeast regions of Thailand. It can be relatively cool during the night.
The lowest temperature in Thailand is in Loei province.
The average temperature range
The average highest temperature is at 32.1 C and average lowest temperature is 21.2 C. The highest temperature
recorded was 43.8 C in Udon Thani province, the lowest 0.1 C in Loei province. The lowest temperature is in
January and highest in April.
The best time to visit northeast region
As the temperature in winter in this region is particular cool due to the high mountains. The season starts
around October or November to February and without a doubt, it is the best time to visit. Not only nice and cool
temperature, it is also the season which most flowers are in blossom. The mists and fogs during early morning
are stunning with the backdrop of the sunrise.