September weather forecastTongnan, China
September
Weather in September
The first month of the autumn, September, is still a warm month in Tongnan, China, with temperature in the range of an average high of 27.5°C (81.5°F) and an average low of 20.1°C (68.2°F).Temperature
The start of September signals a decrease in the average high-temperature, transitioning from a hot 33.3°C (91.9°F) in August to a warm 27.5°C (81.5°F). In Tongnan, the average nighttime temperature during September is a pleasant 20.1°C (68.2°F).Heat index
For September, the heat index is appraised at a tropical 30°C (86°F). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
July and September, with an average relative humidity of 73%, are the most humid months in Tongnan.Rainfall
In September, the rain falls for 16.1 days. Throughout September, 68mm (2.68") of precipitation is accumulated. In Tongnan, during the entire year, the rain falls for 142.5 days and collects up to 566mm (22.28") of precipitation.Snowfall
February through November are months without snowfall.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 06:33 and sunset at 19:19. On the last day of September, in Tongnan, sunrise is at 06:49 and sunset at 18:43 CST.
Sunshine
The average sunshine in September is 6.6h.UV index
In September, the average daily maximum UV index in Tongnan is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 6 during September translates into the following guidance:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Tongnan, China
- Average high temperature in September: 27.5°C
The warmest month (with the highest average high temperature) is August (33.3°C).
The month with the lowest average high temperature is January (12.5°C).
- Average low temperature in September: 20.1°C
The month with the highest average low temperature is August (23.9°C).
The coldest month (with the lowest average low temperature) is January (4.5°C).
Average pressure in September
Tongnan, China
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is December (1024.9mbar).
The month with the lowest atmospheric pressure is July (1001mbar).
Average wind speed in September
Tongnan, China
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is May (8.8km/h).
The calmest month (with the lowest average wind speed) is December (6.4km/h).
Average humidity in September
Tongnan, China
- Average humidity in September: 73%
The months with the highest relative humidity are July and September (73%).
The month with the lowest relative humidity is March (54%).
Average rainfall in September
Tongnan, China
- Average rainfall in September: 68mm
The wettest month (with the highest rainfall) is July (129mm).
The driest month (with the least rainfall) is January (4mm).
Average rainfall days in September
Tongnan, China
- Average rainfall days in September: 16.1 days
The month with the highest number of rainy days is July (19.3 days).
The months with the least rainy days are January and February (5 days).
Average snowfall in September
Tongnan, China
- Average snowfall in September: 0mm
The months with the highest snowfall are January and December (1mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Tongnan, China
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Tongnan, China
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 6h and 36min
The month with the most sunshine is June (Average sunshine: 9h and 0min).
The month with the least sunshine is November (Average sunshine: 5h and 48min).
Average sunshine days in September
Tongnan, China
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in September
Tongnan, China
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Tongnan, China
- Average cloud cover in September: 51
The months with the most cloud cover are September and October (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Tongnan, China
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, August, October, November and December (10km).
The months with the lowest visibility are July and September (9km).
