September weather forecastYuanshan, Taiwan
September
Weather in September
September, the first month of the autumn in Yuanshan, is also a hot month, with an average temperature varying between 24.9°C (76.8°F) and 30.1°C (86.2°F).Temperature
Yuanshan starts September with an average high-temperature of a still hot 30.1°C (86.2°F), a minor shift from August's 32.5°C (90.5°F). September nights observe an average temperature dip to a warm 24.9°C (76.8°F).Heat index
The heat index in September is calculated to be a sweltering 36°C (96.8°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
In Yuanshan, the average relative humidity in September is 71%.Rainfall
In Yuanshan, in September, during 13.5 rainfall days, 89mm (3.5") of precipitation is typically accumulated. Throughout the year, there are 200.7 rainfall days, and 868mm (34.17") of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
In Yuanshan, the average length of the day in September is 12h and 18min.On the first day of September, sunrise is at 05:34 and sunset at 18:12. On the last day of the month, sunrise is at 05:45 and sunset at 17:42 CST.
Sunshine
In Yuanshan, the average sunshine in September is 8.6h.UV index
The months with the highest UV index are April through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, a daily UV index of 7 turns into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yuanshan, Taiwan
- Average high temperature in September: 30.1°C
The warmest month (with the highest average high temperature) is July (32.9°C).
The month with the lowest average high temperature is January (17°C).
- Average low temperature in September: 24.9°C
The month with the highest average low temperature is July (27.1°C).
The coldest month (with the lowest average low temperature) is January (12.9°C).
Average pressure in September
Yuanshan, Taiwan
- Average pressure in September: 1009.3mbar
The month with the highest atmospheric pressure is January (1021.6mbar).
The month with the lowest atmospheric pressure is August (1005.3mbar).
Average wind speed in September
Yuanshan, Taiwan
- Average wind speed in September: 15.7km/h
The windiest months (with the highest average wind speed) are October and December (19.5km/h).
The calmest month (with the lowest average wind speed) is June (10.2km/h).
Average humidity in September
Yuanshan, Taiwan
- Average humidity in September: 71%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (63%).
Average rainfall in September
Yuanshan, Taiwan
- Average rainfall in September: 89mm
The wettest month (with the highest rainfall) is August (130mm).
The driest month (with the least rainfall) is February (34mm).
Average rainfall days in September
Yuanshan, Taiwan
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is October (20.2 days).
The month with the least rainy days is September (13.5 days).
Average snowfall days in September
Yuanshan, Taiwan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Yuanshan, Taiwan
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 3h and 24min).
Average sunshine days in September
Yuanshan, Taiwan
- Average sunshine days in September: 13 days
The month with the most sunshine days is July (15 days).
The month with the least sunshine days is October (8.5 days).
Average UV index in September
Yuanshan, Taiwan
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Yuanshan, Taiwan
- Average cloud cover in September: 35
The months with the most cloud cover are January and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Yuanshan, Taiwan
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
