Ko Samet in september: average Weather, Temperature and Climate
Weather in Ko Samet in september 2025
The weather in Ko Samet in september comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
very bad weather UV index: 7
Weather at 6am
83°F
Heavy rain
44% of time
27%
17%
8%
Weather at 12pm
86°F
Moderate rain at times
34% of time
29%
18%
17%
Weather at 6pm
85°F
Moderate rain at times
27% of time
27%
21%
18%
Weather at 3am
83°F
41%
38%
13%
7%
Evolution of daily average temperature and precipitation in Ko Samet in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Ko Samet in september.
The climate of Ko Samet in september is very bad
the weather in Ko Samet in september is wet (with 22.9in of precipitation over 22 days). The weather is better from the previous month since in august it receives an average of 24.6in of precipitation over 23 days.
The climate enjoyable there this month. The high seasonal norm is 86°F. On average, the recorded minimum temperature is 83°F. Thus, the mean temperature average on this month of september in Ko Samet is 85°F. These temperatures are far removed from those records observed in Ko Samet in the month of september with a maximum record of 92°F in 2021 and a minimum record of 77°F in 2009. You can plan to have about 15 days with temperatures up to 86°F, or 50 of the month.
On average, in Ko Samet, the days of september last 12:12. Sunrise is at 06:03 and sunset is at 18:15.
September: another location in Thailand?
If you want to go to Thailand in september, there are destinations with better weather than Ko Samet:
In september, Chiang Mai, Doi Inthanon, Chawang, Chumphon, Lamphun and Nakhon Si Thammarat have good weather.
Finally, Bangkok, Chiang Rai, Hua Hin, Kanchanaburi, Khao Lak national Park and Khon Kaen have a tolerable climate, but better than Ko Samet.
Seasonal average climate and temperature of Ko Samet in september
Check below seasonal norms These statistics are compiled from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 83°F | ||||
| Highest record temperature | 92°F (2021) | ||||
| Lowest record temperature | 77°F (2009) | ||||
| Number of days at +86°F | 15 day(s) (50%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 84°F | ||||
| Highest sea temperature | 86°F | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 83°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 22.9in | ||||
| Number of days with rainfall | 22 day(s) (73%) | ||||
| Record daily rainfall | 4.7in (2020) | ||||
| Other climate data | |||||
| Humidity | 81% | ||||
| Visibility | 8.5km | ||||
| Cloud cover | 48% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:03 | ||||
| Time of sunset | 18:15 | ||||
| Length of day | 12:12 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last september?
Here is the day by day recorded weather in Ko Samet in september 2024:
77°F to 88°F
77°F to 85°F
77°F to 81°F
77°F to 81°F
77°F to 83°F
77°F to 83°F
79°F to 85°F
77°F to 83°F
77°F to 83°F
77°F to 86°F
77°F to 86°F
77°F to 88°F
77°F to 85°F
77°F to 79°F
77°F to 86°F
77°F to 86°F
77°F to 85°F
76°F to 77°F
76°F to 81°F
77°F to 83°F
77°F to 81°F
77°F to 81°F
77°F to 83°F
76°F to 86°F
76°F to 83°F
76°F to 86°F
76°F to 85°F
76°F to 86°F
77°F to 90°F
77°F to 88°F
Map: other cities in Thailand in september
Cities near Ko Samet:
| Rayong in september | very bad weather |
| Klaeng in september | very bad weather |
| Sattahip in september | bad weather |
| Chanthaburi in september | bad weather |
| Pattaya in september | bad weather |
| Bang Lamung in september | bad weather |
| Si Racha in september | bad weather |
| Chon Buri in september | tolerable weather |
| Koh Chang in september | bad weather |
| Trat in september | bad weather |
| Koh Wai in september | tolerable weather |
| Chachoengsao in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Ko Samet
perfect weather
good
tolerable
bad
very bad
Weather data for Ko Samet in september:
Weather data for Ko Samet for september are derived from an average of the weather forecast since 2009 in Ko Samet. There is a margin of error and these forecasts are to be considered as general information only. The weather in Ko Samet can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Ko Samet.