Thailand weather in September

Planning a getaway to Thailand this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What is the weather like in Thailand in September?

September in Thailand generally has temperatures that range from warm to very warm, with precipitation levels ranging from high to heavy.

During the day temperatures vary from warm in Ban Khlong Muang at 29°C to very warm in Suphan Buri at 35°C. At night it cools down to 26°C in Suphan Buri and 24°C in Ban Khlong Muang. These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

In September, precipitation varies across different areas. From high rainfall in Songkhla with an average of 135 mm to heavy rainfall in Ko Mak with 574 mm. Bangkok experiences its highest rainfall in this month of the year. Come prepared by bringing an umbrella. The city Bangkok usually sees around 155 hours of sunlight, indicating a moderately sunny period.

To learn more about the conditions in specific areas of Thailand in September, check out the map below. For more details on the yearly weather, visit our Thailand climate page.

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.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm 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 34°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Bangkok
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
34°C 
27°C 
160 hours 
151 mm 
19 days 
34°C 
26°C 
155 hours 
252 mm 
20 days 
poor 
October   >> October
>>  
33°C 
26°C 
198 hours 
199 mm 
16 days 
Climate in Bangkok

Average weather in Chiang Mai

In September Chiang Mai generally has very high temperatures with maximum daytime temperatures around 33°C, minimum nighttime temperatures around 24°C and heavy monthly rainfall. So on average the conditions are poor that month.

Chiang Mai
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
32°C 
24°C 
116 hours 
260 mm 
21 days 
poor 
33°C 
24°C 
148 hours 
249 mm 
18 days 
poor 
October   >> October
>>  
32°C 
22°C 
202 hours 
123 mm 
12 days 
Climate in Chiang Mai

Average weather in Patong Beach

In September Patong Beach generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Patong Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
27°C 
150 hours 
239 mm 
19 days 
poor 
29°C 
26°C 
100 hours 
294 mm 
23 days 
poor 
October   >> October
>>  
29°C 
26°C 
140 hours 
306 mm 
22 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 32°C, minimum nighttime temperatures around 26°C and high monthly rainfall. So on average the conditions are tolerable that month.

Hua Hin
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
32°C 
26°C 
114 hours 
102 mm 
18 days 
32°C 
26°C 
108 hours 
157 mm 
18 days 
October   >> October
>>  
31°C 
26°C 
147 hours 
254 mm 
17 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 30°C, minimum nighttime temperatures around 26°C and heavy monthly rainfall. So on average the conditions are poor that month.

Ao Nang Beach
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
26°C 
152 hours 
275 mm 
19 days 
poor 
30°C 
26°C 
145 hours 
314 mm 
22 days 
poor 
October   >> October
>>  
30°C 
26°C 
110 hours 
312 mm 
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 visit Thailand?

In our opinion, September may not be the ideal time to visit Thailand due to the typically poor weather in Bangkok.

Generally speaking, January and December provide perfect weather in Bangkok. The weather in April, May, June and September, on the other hand, tends to be poor.

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.

  • January      
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  • July      
  • August      
  • September      
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  • Weather and climate has detailed information for every country 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 recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.