September weather forecastDoumen, China
September
Weather in September
The first month of the autumn, September, is still a tropical month in Doumen, China, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 25.7°C (78.3°F).Temperature
With the onset of September, the average high-temperature stands at a still hot 30.3°C (86.5°F), closely aligned with August's 31.3°C (88.3°F). A slight dip in temperature to a moderately hot 25.7°C (78.3°F) marks the average nights during September.Heat index
September's heat index is calculated to be a sweltering 38°C (100.4°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
In September, the average relative humidity is 78%.Rainfall
In Doumen, during September, the rain falls for 22.9 days and regularly aggregates up to 147mm (5.79") of precipitation. Throughout the year, there are 231.8 rainfall days, and 1216mm (47.87") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 17min.On the first day of September, sunrise is at 06:09 and sunset at 18:43. On the last day of the month, sunrise is at 06:17 and sunset at 18:15 CST.
Sunshine
In Doumen, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 6 in September translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Doumen, China
- Average high temperature in September: 30.3°C
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (18.4°C).
- Average low temperature in September: 25.7°C
The month with the highest average low temperature is August (27°C).
The coldest month (with the lowest average low temperature) is January (14.3°C).
Average pressure in September
Doumen, China
- Average pressure in September: 1008.2mbar
The month with the highest atmospheric pressure is January (1020.2mbar).
The month with the lowest atmospheric pressure is August (1004.4mbar).
Average wind speed in September
Doumen, China
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is December (15.1km/h).
The calmest month (with the lowest average wind speed) is August (11km/h).
Average humidity in September
Doumen, China
- Average humidity in September: 78%
The month with the highest relative humidity is May (83%).
The month with the lowest relative humidity is December (67%).
Average rainfall in September
Doumen, China
- Average rainfall in September: 147mm
The wettest month (with the highest rainfall) is August (229mm).
The driest month (with the least rainfall) is December (23mm).
Average rainfall days in September
Doumen, China
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is August (25.7 days).
The month with the least rainy days is December (11 days).
Average daylight in September /
Average sunshine in September
Doumen, China
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is March (Average sunshine: 4h and 54min).
Average sunshine days in September
Doumen, China
- Average sunshine days in September: 5.5 days
The month with the most sunshine days is December (17.5 days).
The months with the least sunshine days are June and July (2.9 days).
Average UV index in September
Doumen, China
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Doumen, China
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 36).
Average visibility in September
Doumen, China
- Average visibility in September: 10km
The months with the highest visibility are September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July and August (9km).
