Udon Thani weather in September
Hot and humid, with frequent heavy rain. Average highs of 30°C and lows of 24°C, with around 26 rainy days expected throughout the month.
While September isn't our top-rated month for Udon Thani, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
30°C
Average low
24°C
Rainy days
26 days
Best months to visit
January, February, November, December
What to do in Udon Thani in September
Whatever the weather, Udon Thani rewards curious visitors. Here are some of the best ways to spend your time:
Visit Ban Chiang Archaeological Museum treasures
Explore Nong Khai's Mekong riverfront temples
Photograph lotus flowers in Nong Khai Lake
Visit Phu Prabat historic stone formations
Attend traditional Isaan music performances
Sample authentic Isaan regional cuisine
What to pack for September
Light breathable clothing, high-SPF sunscreen, a wide-brimmed hat, and a reusable water bottle are essential. Pack sandals and at least one light layer for air-conditioned interiors.
Browse other months
Recommended
January
28C
Warm and pleasant, and mostly sunny skies.
Recommended
February
30C
Hot and humid, and mostly sunny skies.
March
33C
Hot and humid, with occasional showers.
April
35C
Very hot, with some rainy days.
May
33C
Hot and humid, with frequent heavy rain.
June
32C
Hot and humid, with frequent heavy rain.
July
31C
Hot and humid, with frequent heavy rain.
August
30C
Hot and humid, with frequent heavy rain.
September (you are here)
30C
Hot and humid, with frequent heavy rain.
October
30C
Hot and humid, with some rainy days.
Recommended
November
30C
Hot and humid, and mostly sunny skies.
Recommended
December
28C
Warm and pleasant, and mostly sunny skies.
Book your September trip to Udon Thani
Find hotels, tours and experiences for the perfect escape.
