Sunheron logoSunheron
About SunheronFAQContactBlog
Find destination...
°C
  • About Sunheron
  • FAQ
  • Contact
  • Blog
  • °C

    Thailand

    South Thailand weather in September 2025

    Thailand

    South Thailand weather in September 2025

     

    Day

    31 °C

     

    Night

    24 °C

     

    Sea

    29 °C

     

    Precipitation

    375 mm

    in month

     

    Rainy days

    23 days

    in month

     

    Daylight

    12 hours

    average

     

    Sunshine

    5 hours

    average

     

    Humidity

    84 %

     

    Day

    31 °C

     

    Night

    24 °C

     

    Sea

    29 °C

     

    Precipitation

    375 mm

    in month

     

    Rainy days

    23 days

    in month

     

    Daylight

    12 hours

    average

     

    Sunshine

    5 hours

    average

     

    Humidity

    84 %

    Overview: South Thailand

    South Thailand and its gems Phuket or Koh Phi Phi with tunning beaches, vibrant nightlife, and delicious cuisine, that's what a perfect holiday means. The region's cuisine is famous for its spicy curries, fresh seafood, and delicious street food. The turquoise waters and vibrant coral reefs this region a paradise for beach lovers and snorkelers.

    Travel information

    Flights
    to
    Activities
    in Phuket

    Weather charts for South Thailand

    Data backed by 40 years of history

    We make the most from 40 years of historical weather data to predict the best weather conditions.

    Selection of world's favourite destinations

    Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.

    16 500 000 weather records

    We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.

    Amazing beach with turquise sea in Ko Lanta on a sunny day with some clouds
    Nice beach by the sea with turquise water in Ko Phi Phi in sunny weather with few clouds
    Port in Phuket in sunny weather with few clouds

    Find more destinations like this

    Activities in South Thailand

    Flights to South Thailand

    Destinations in South Thailand

    Destinations with similar weather to South Thailand


    Weather overview and FAQs

    Weather overview

    In South Thailand in September, the average air temperature ranges from 31 °C (87 °F) during the day to 24 °C (75 °F) at night. There are 23 days of rain on average, where the rainfall is 375 mm (14.78 in).

    Are there good conditions to visit in September in South Thailand?

    South Thailand can be visited in September - the weather will be moderate. September is the wet season month in South Thailand, which means that there may be more frequent rains during your stay.

    What is the sea temperature in September in South Thailand?

    The temperature of the sea in South Thailand in September is 29 °C (84 °F). This temperature is someone's dream come true, while for someone it may no longer be ideal for the purpose of refreshment.

    What temperature can I expect during the day in South Thailand in September?

    In September in South Thailand, the average daily temperatures will be 31 °C (87 °F). The great temperature for lying by the sea or pool and sunbathing, everywhere else you will probably be a bit hot. Don't forget to drink during the day, in these temperatures you should hydrate yourself a lot.

    How many rainy days can I expect in September in South Thailand?

    There are 23 days, which are rainy in South Thailand in September, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 5.3 days of the week, or in general - 76 % days.

    What is the night temperature in September in South Thailand?

    The average night temperature in South Thailand in September is 24 °C (75 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.

    What is the rainfall intensity in South Thailand in September?

    In South Thailand in September, there is 375 mm (14.78 in) rainfall, which means on average 13 mm (0.49 in) rainfall per day.

    How many hours of sun to expect in South Thailand in September?

    There is an average length of sunshine of 5 hours per day in September in South Thailand.

    How long is the day (from dawn till dusk) in South Thailand in September?

    The length of daylight in South Thailand in September is 12 hours.

    Is September part of the wet season in South Thailand?

    Yes, in South Thailand in September there is a wet season with 23 days, when there is rain in a month.

    How windy is it in South Thailand in September?

    An average wind scale that can be expected in South Thailand in September is 2. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.

    Is it hot in September in South Thailand?

    In South Thailand in September, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.

    Is the weather in South Thailand warmer in September than in October?

    No, in South Thailand in September the temperature is not higher than in October.

    Is South Thailand rainier in September than in August?

    Yes, in South Thailand in September it rains more than in August.

    What level of humidity is to expect in South Thailand in September?

    In September in South Thailand, expect humidity around 84 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.

    Useful links

    Thailand: a great comparison of Thai resorts and beaches
    13 best tourist spots in Thailand to experience the local life
    6 places with the world's best beaches you must visit in spring!

    Our latest blog posts