Koh Wai in september: average Weather, Temperature and Climate
Weather in Koh Wai in september 2025
The weather in Koh Wai 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 using 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
79°F
Moderate rain at times
37% of time
25%
22%
9%
Weather at 12pm
85°F
Moderate rain at times
45% of time
22%
19%
9%
Weather at 6pm
79°F
Moderate rain at times
37% of time
28%
18%
12%
Weather at 3am
77°F
45%
26%
18%
7%
Evolution of daily average temperature and precipitation in Koh Wai in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Koh Wai in september.
The climate of Koh Wai in september is tolerable
The climate in september in Koh Wai is wet (with 16.5in of rainfall over 18 days). This is better than the previous month since in august it receives an average of 17in of rainfall over 20 days.
The climate quite comfortable here september. The thermometer averaged maximum of 85°F. The minimum is 79°F. Thus, the mean temperature average in september in Koh Wai is 83°F. Note that these seasonal averages are in contrast with those observed in Koh Wai in the month of september with a maximum record of 90°F in 2010 and a minimum record of 61°F in 2021. You can plan to have about 12 days with temperatures up to 86°F, or 40 of time.
Day length in Koh Wai in september is 12:11. Sunrise is at 06:00 and sunset is at 18:11.
With proper weather, this month is okay (but not the best) to go in this city in Thailand.
September: another location in Thailand?
If you want to go to Thailand in september, there are destinations with better weather than Koh Wai:
In september, Chiang Mai, Doi Inthanon, Chawang, Chumphon, Lamphun and Nakhon Si Thammarat have good weather.
Seasonal average climate and temperature of Koh Wai in september
Check below seasonal norms These statistics are compiled from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 83°F | ||||
| Highest temperature | 85°F | ||||
| Lowest temperature | 79°F | ||||
| Highest record temperature | 90°F (2010) | ||||
| Lowest record temperature | 61°F (2021) | ||||
| Number of days at +86°F | 12 day(s) (40%) | ||||
| 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 | 14km/h | ||||
| Wind temperature | 79°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 16.5in | ||||
| Number of days with rainfall | 18 day(s) (60%) | ||||
| Record daily rainfall | 4.2in (2011) | ||||
| Other climate data | |||||
| Humidity | 87% | ||||
| Visibility | 8.84km | ||||
| Cloud cover | 53% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:00 | ||||
| Time of sunset | 18:11 | ||||
| Length of day | 12:11 | ||||
| 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 Wai in september 2024:
77°F to 85°F
77°F to 85°F
77°F to 79°F
79°F to 81°F
79°F to 81°F
79°F to 81°F
79°F to 83°F
77°F to 81°F
77°F to 83°F
77°F to 85°F
79°F to 85°F
77°F to 85°F
77°F to 83°F
76°F to 77°F
77°F to 83°F
79°F to 85°F
77°F to 83°F
77°F to 79°F
77°F to 79°F
79°F to 81°F
79°F to 81°F
79°F to 81°F
77°F to 83°F
76°F to 85°F
77°F to 85°F
76°F to 85°F
76°F to 85°F
76°F to 85°F
77°F to 86°F
77°F to 86°F
Map: other cities in Thailand in september
Cities near Koh Wai:
| Koh Chang in september | bad weather |
| Koh Kut (Koh Kood) in september | tolerable weather |
| Trat in september | bad weather |
| Chanthaburi in september | bad weather |
| Ko Samet in september | very bad weather |
| Klaeng in september | very bad weather |
| Rayong in september | very bad weather |
| Sattahip in september | bad weather |
| Pattaya in september | bad weather |
| Bang Lamung in september | bad weather |
| Si Racha in september | bad weather |
| Sa Kaeo in september | bad weather |
Click over cities on the map for information about the weather in september.
Koh Wai
perfect weather
good
tolerable
bad
very bad
Weather data for Koh Wai in september:
Weather data for Koh Wai for september are derived from an average of the weather forecast since 2009 in Koh Wai. There is a margin of error and these forecasts are to be considered as general information only. The weather in Koh Wai 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 Wai.