Thailand in September
September is the cheapest month to be in Thailand and the one where flexibility pays, because ferry cancellations on the Andaman side are routine.
Is September a good time to visit Thailand?
September is one of the better months across Thailand, with crowds averaging 44/100 and typical highs near 33°C.
Book things to do
Thailand: tours and tickets in Bangkok, from our booking partner.
Free cancellationBangkok Railway Market & Floating Market Day Trip
from€16
Free cancellationTour of Grand Palace + Wat Phra Kaew
from€10
Free cancellationAyutthaya Day Trip
from€25
Free cancellationRailway Market, Floating Market, & Ayutthaya Ruins Day Trip
from€56
Mahanakhon SkyWalk Ticket
from€28
Free cancellationBangkok Private Tours
from€189
What closes and what fills up in September
- The wettest month nationally — peak of the southwest monsoon
More tours and tickets
More options from our booking partner.
How September compares across the year
Frequently asked questions
Is September a good month to visit Thailand?
September is one of the better months across Thailand, with crowds averaging 44/100 and typical highs near 33°C.
How busy is Thailand in September?
Averaged across the destinations we track, Thailand sits near 44/100 in September. The calmest of them is Bangkok.
What is the weather like in Thailand in September?
Expect average highs near 33°C and lows near 25°C, with roughly 21 wet days — though Thailand varies by region.