Yilan in september: average Weather, Temperature and Climate
Weather in Yilan in september 2025
The weather in Yilan in 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
79°F
Clear/Sunny
37% of time
25%
24%
12%
Weather at 12pm
85°F
Moderate rain at times
36% of time
32%
19%
12%
Weather at 6pm
81°F
Moderate rain at times
39% of time
25%
20%
15%
Weather at 3am
77°F
36%
30%
23%
11%
Evolution of daily average temperature and precipitation in Yilan in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Yilan in september.
The climate of Yilan in september is tolerable
In september in Yilan, the climate is wet (with 14in of precipitation over 12 days). The weather is better from the previous month since in august it receives an average of 15.7in of precipitation over 17 days.
The climate pleasant in this location the month of september. Temperatures are up to 85°F. In the morning the temperature drops to 79°F. Thus, the mean temperature average in september in Yilan is 83°F. Note that these seasonal averages are in contrast with those observed in Yilan in september with a maximum record of 95°F in 2021 and a minimum record of 67°F in 2020. You can plan to have about 11 days with temperatures over 86°F, or 37 of the month.
On average, in Yilan, the days of september last 12:18. Sunrise is at 05:39 and sunset is at 17:57.
With a correct weather, september is okay (but not the best) to go in this locality in Taiwan.
September: another location in Taiwan?
If you want to go to Taiwan in september, there are destinations with better weather than Yilan:
In september, Taipei, Hualien, Hsinchu, Keelung, Taichung and Yangmingshan National Park have good weather.
Seasonal average climate and temperature of Yilan in september
Check below seasonal norms These datas are set from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 83°F | ||||
| Highest temperature | 85°F | ||||
| Lowest temperature | 79°F | ||||
| Highest record temperature | 95°F (2021) | ||||
| Lowest record temperature | 67°F (2020) | ||||
| Number of days at +86°F | 11 day(s) (37%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 82°F | ||||
| Lowest sea temperature | 79°F | ||||
| Highest sea temperature | 85°F | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 79°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 14in | ||||
| Number of days with rainfall | 12 day(s) (41%) | ||||
| Record daily rainfall | 12.7in (2016) | ||||
| Other climate data | |||||
| Humidity | 81% | ||||
| Visibility | 9.08km | ||||
| Cloud cover | 38% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:39 | ||||
| Time of sunset | 17:57 | ||||
| Length of day | 12:18 | ||||
| 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 Yilan in september 2024:
81°F to 95°F
77°F to 97°F
76°F to 94°F
76°F to 92°F
76°F to 94°F
77°F to 95°F
77°F to 90°F
76°F to 86°F
74°F to 92°F
79°F to 88°F
76°F to 94°F
81°F to 92°F
74°F to 90°F
76°F to 88°F
74°F to 90°F
76°F to 94°F
79°F to 92°F
74°F to 86°F
76°F to 90°F
77°F to 92°F
77°F to 94°F
76°F to 79°F
76°F to 79°F
76°F to 81°F
76°F to 83°F
76°F to 85°F
72°F to 85°F
72°F to 85°F
76°F to 88°F
76°F to 86°F
Map: other cities in Taiwan in september
Cities near Yilan:
| Jiaoxi in september | tolerable weather |
| Taipei in september | good weather |
| Keelung in september | good weather |
| Yangmingshan National Park in september | good weather |
| Taroko National Park in september | good weather |
| Hsinchu in september | good weather |
| Hualien in september | good weather |
| Miaoli in september | tolerable weather |
| Sanyi in september | good weather |
| Puli (Nantou) in september | tolerable weather |
| Taichung in september | good weather |
| Sun Moon Lake in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Yilan
perfect weather
good
tolerable
bad
very bad
Weather data for Yilan in september:
Weather data for Yilan for september are derived from an average of the weather forecast since 2009 in Yilan. There is a margin of error and these forecasts are to be considered as general information only. The weather in Yilan 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 Yilan.