Koh Lanta in september: average Weather, Temperature and Climate
Weather in Koh Lanta in september 2025
The weather in Koh Lanta in the month of september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather UV index: 7
Weather at 6am
83°F
Heavy rain
36% of time
29%
23%
9%
Weather at 12pm
85°F
Heavy rain
30% of time
28%
23%
18%
Weather at 6pm
85°F
Partly Cloudy
35% of time
22%
21%
19%
Weather at 3am
83°F
32%
31%
21%
11%
Evolution of daily average temperature and precipitation in Koh Lanta in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Koh Lanta in september.
The climate of Koh Lanta in september is tolerable
The weather in september in Koh Lanta is wet (with 19.5in of rainfall over 19 days). The weather's not getting better compared to the previous month since in august there is an average of 17.6in of precipitation over 18 days.
The climate good here september. Temperatures are up to 85°F. The seasonal minimum is 83°F. Thus, the mean temperature average in september in Koh Lanta is 85°F. Note that these seasonal averages are in contrast with those observed in Koh Lanta in september with a maximum record of 88°F in 2019 and a minimum record of 68°F in 2020. You can expect to have 86°F or more across the month.
On this month of september, day length in Koh Lanta is generally 12:09. Sunrise is at 06:14 and sunset is at 18:23.
With a bad weather, the month of september is not recommended to go in this locality.
September: another location in Thailand?
If you want to go to Thailand in september, there are destinations with better weather than Koh Lanta:
In september, Chiang Mai, Doi Inthanon, Chawang, Chumphon, Lamphun and Nakhon Si Thammarat have good weather.
Seasonal average climate and temperature of Koh Lanta in september
Check below seasonal norms These datas are generated from the weather statements of the last years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 85°F | ||||
| Lowest temperature | 83°F | ||||
| Highest record temperature | 88°F (2019) | ||||
| Lowest record temperature | 68°F (2020) | ||||
| Number of days at +86°F | 5 day(s) (17%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 83°F | ||||
| Highest sea temperature | 87°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 83°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 19.5in | ||||
| Number of days with rainfall | 19 day(s) (64%) | ||||
| Record daily rainfall | 4.3in (2020) | ||||
| Other climate data | |||||
| Humidity | 78% | ||||
| Visibility | 8.69km | ||||
| Cloud cover | 44% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:14 | ||||
| Time of sunset | 18:23 | ||||
| Length of day | 12:09 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Koh Lanta in september 2024:
79°F to 85°F
79°F to 83°F
77°F to 81°F
79°F to 83°F
79°F to 86°F
79°F to 83°F
79°F to 83°F
81°F to 83°F
77°F to 83°F
79°F to 85°F
79°F to 85°F
79°F to 85°F
77°F to 83°F
77°F to 83°F
79°F to 83°F
79°F to 81°F
79°F to 81°F
79°F to 79°F
79°F to 81°F
79°F to 81°F
79°F to 83°F
79°F to 85°F
79°F to 85°F
77°F to 85°F
76°F to 85°F
77°F to 85°F
76°F to 83°F
76°F to 83°F
77°F to 85°F
79°F to 85°F
Map: other cities in Thailand in september
Cities near Koh Lanta:
| Koh Phi Phi in september | very bad weather |
| Koh Muk (Ko Mook) in september | tolerable weather |
| Railay beach in september | tolerable weather |
| Ton Sai beach (Ao Nang) in september | tolerable weather |
| Krabi - Ao Nang in september | tolerable weather |
| Koh Libong in september | tolerable weather |
| Trang in september | tolerable weather |
| Koh Yao Yai in september | tolerable weather |
| Koh Yao Noi in september | tolerable weather |
| Koh Sukon in september | tolerable weather |
| Phuket in september | tolerable weather |
| Chawang in september | good weather |
Click over cities on the map for information about the weather in september.
Koh Lanta
perfect weather
good
tolerable
bad
very bad
Weather data for Koh Lanta in september:
Weather data for Koh Lanta for september are derived from an average of the weather forecast since 2009 in Koh Lanta. There is a margin of error and these forecasts are to be considered as general information only. The weather in Koh Lanta 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 Koh Lanta.