Chiang Rai in september: average Weather, Temperature and Climate
Weather in Chiang Rai in september 2025
The weather in Chiang Rai in the month of september comes from statistical datas on the past years. You can view the weather statistics for all the 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
74°F
Moderate rain at times
35% of time
18%
18%
14%
Weather at 12pm
90°F
Moderate rain at times
49% of time
18%
17%
14%
Weather at 6pm
79°F
Moderate rain at times
45% of time
22%
19%
7%
Weather at 3am
72°F
38%
29%
17%
9%
Evolution of daily average temperature and precipitation in Chiang Rai in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Chiang Rai in september.
The climate of Chiang Rai in september is tolerable
The climate in september in Chiang Rai is wet (with 12.1in of precipitation over 17 days). The weather is better from the previous month since in august it receives an average of 18.6in of rainfall over 25 days.
The climate is very warm around this city this month. The high seasonal norm is 90°F. In the morning the temperature drops to 74°F. Thus, the mean temperature average in september in Chiang Rai is 83°F. Note that these seasonal averages are in contrast with those observed in Chiang Rai in the month of september with a maximum record of 99°F in 2016 and a minimum record of 65°F in 2012. You can expect to have about 23 days with temperatures up to 86°F, or 77 of time.
On average, in Chiang Rai, the days of september last 12:15. The sun rises at 06:08 and sunset is at 18:23.
With proper weather, this month is okay (but not good) to go in this city in Thailand.
Chiang Rai: another month?
If you can push back the dates of your trip, we advise you to go in october to Chiang Rai. more information
September: another location in Thailand?
If you want to go to Thailand in september, there are destinations with better weather than Chiang Rai:
In september, Chiang Mai, Doi Inthanon, Chawang, Chumphon, Lamphun and Nakhon Si Thammarat have good weather.
Seasonal average climate and temperature of Chiang Rai in september
Check below seasonal norms These statistics are compiled from the weather statements of the last years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 83°F | ||||
| Highest temperature | 90°F | ||||
| Lowest temperature | 74°F | ||||
| Highest record temperature | 99°F (2016) | ||||
| Lowest record temperature | 65°F (2012) | ||||
| Number of days at +86°F | 23 day(s) (77%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 6km/h | ||||
| Wind temperature | 74°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 12.1in | ||||
| Number of days with rainfall | 17 day(s) (56%) | ||||
| Record daily rainfall | 3.4in (2013) | ||||
| Other climate data | |||||
| Humidity | 95% | ||||
| Visibility | 8.12km | ||||
| Cloud cover | 48% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:08 | ||||
| Time of sunset | 18:23 | ||||
| Length of day | 12:15 | ||||
| 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 Chiang Rai in september 2024:
74°F to 86°F
68°F to 86°F
70°F to 90°F
74°F to 90°F
74°F to 88°F
74°F to 86°F
72°F to 92°F
74°F to 79°F
70°F to 74°F
68°F to 76°F
68°F to 79°F
68°F to 85°F
70°F to 85°F
68°F to 86°F
70°F to 88°F
70°F to 88°F
70°F to 88°F
68°F to 85°F
67°F to 90°F
68°F to 79°F
67°F to 79°F
68°F to 76°F
70°F to 74°F
70°F to 74°F
68°F to 79°F
67°F to 81°F
67°F to 86°F
68°F to 88°F
68°F to 86°F
70°F to 83°F
Map: other cities in Thailand in september
Cities near Chiang Rai:
| Mae Sai in september | tolerable weather |
| Doi Pha Hom Pok National Park in september | tolerable weather |
| Phayao in september | bad weather |
| Phayao Lake in september | bad weather |
| Pong in september | bad weather |
| Chiang Mai in september | good weather |
| Pai in september | tolerable weather |
| Nan in september | tolerable weather |
| Lamphun in september | good weather |
| Lampang in september | tolerable weather |
| Phrae in september | tolerable weather |
| Doi Samer Dao in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Chiang Rai
perfect weather
good
tolerable
bad
very bad
Weather data for Chiang Rai in september:
Weather data for Chiang Rai for september are derived from an average of the weather forecast since 2009 in Chiang Rai. There is a margin of error and these forecasts are to be considered as general information only. The weather in Chiang Rai 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 Chiang Rai.