Thailand weather in September

Many people wonder what kind of weather they can expect in September in Thailand. Is this month a good time to go to Thailand? To answer that question we created this page with all the information you need.

What is the weather like in Thailand in September?

The weather conditions in Thailand in September vary from poor to pleasant depending on the destination.

During September in Thailand, the average maximum temperature varies from high in Khong Chiam with 28°C (83°F) to very high in Kanchanaburi with 33°C (91°F). Minimum nighttime temperatures generally drop to 25°C (76°F) in Kanchanaburi and 21°C (70°F) in Khong Chiam. On average, it is the month with the lowest temperatures of the year in Thailand.

Precipitation in September varies from high in Prachuap Khiri Khan with an average of 138mm (5.4 inches) of rainfall to heavy in Ko Kut with 508mm (20 inches). It is the wettest month of the year in Bangkok. It is also generally a moderately sunny time of year with an average of 155 hours of sunshine in Bangkok during the entire month.

We invite you to have a look at the map below to discover more about the various weather conditions around Thailand.

Where to go in Thailand in September

Find the average weather conditions in September for the most popular destinations in Thailand on the map below. Click on a destination dot for more detailed information.

Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

Popular destinations in Thailand

What is the weather like in September for the 5 most popular destinations in Thailand?

Average weather in Bangkok

In September Bangkok generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (76°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Bangkok
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
32°C / 90°F 
25°C / 77°F 
160 hours 
280mm / 11" 
21 days 
poor 
32°C / 90°F 
25°C / 76°F 
155 hours 
315mm / 12" 
20 days 
poor 
October   >> October
>>  
32°C / 90°F 
24°C / 76°F 
198 hours 
188mm / 7.4" 
16 days 
Climate in Bangkok

Average weather in Chiang Mai

In September Chiang Mai generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Chiang Mai
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 88°F 
23°C / 73°F 
116 hours 
191mm / 7.5" 
20 days 
31°C / 88°F 
23°C / 73°F 
148 hours 
197mm / 7.8" 
18 days 
October   >> October
>>  
31°C / 87°F 
22°C / 71°F 
202 hours 
101mm / 4" 
12 days 
Climate in Chiang Mai

Average weather in Patong Beach

In September Patong Beach generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (74°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Patong Beach
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
32°C / 89°F 
24°C / 75°F 
150 hours 
307mm / 12" 
21 days 
poor 
31°C / 88°F 
23°C / 74°F 
100 hours 
309mm / 12" 
21 days 
poor 
October   >> October
>>  
31°C / 88°F 
23°C / 74°F 
140 hours 
275mm / 11" 
21 days 
poor 
Climate in Patong Beach

Average weather in Hua Hin

In September Hua Hin generally has very high temperatures with maximum daytime temperatures around 31°C (89°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Hua Hin
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
31°C / 89°F 
24°C / 76°F 
114 hours 
333mm / 13" 
22 days 
poor 
31°C / 89°F 
24°C / 75°F 
108 hours 
310mm / 12" 
21 days 
poor 
October   >> October
>>  
32°C / 89°F 
24°C / 75°F 
147 hours 
229mm / 9" 
16 days 
poor 
Climate in Hua Hin

Average weather in Ao Nang Beach

In September Ao Nang Beach generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (74°F) and heavy monthly rainfall. So on average the conditions are poor that month.

Ao Nang Beach
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   August August
<<  
32°C / 89°F 
24°C / 74°F 
152 hours 
240mm / 9.5" 
20 days 
poor 
31°C / 88°F 
23°C / 74°F 
145 hours 
277mm / 11" 
21 days 
poor 
October   >> October
>>  
31°C / 88°F 
23°C / 73°F 
110 hours 
286mm / 11" 
22 days 
poor 
Climate in Ao Nang Beach

Is your destination not in the list? Have a look at other destinations in Thailand.

Is September the best time to go to Thailand?

In our opinion September is not the best time to visit Thailand with commonly poor weather in Bangkok.

On average the best time to visit Thailand is in January and December with generally perfect weather in Bangkok. The worst months are April, May, June, July, August and September that can have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Thailand. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for almost all countries in the world. Are you going to Thailand? Get detailed historical weather averages for many cities in Thailand.

    Not sure yet where to go? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.