September weather forecast
Doumen, China

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Weather in September

The first month of the autumn, September, is still a hot month in Doumen, China, with temperature in the range of an average low of 25.7°C (78.3°F) and an average high of 30.3°C (86.5°F).

Temperature

September records an average high-temperature of a still tropical 30.3°C (86.5°F), indicating a minor variation from the preceding month. The low temperature average during September reflects a slight decrease to a moderately hot 25.7°C (78.3°F) from the day's peak.

Heat index

September's mean heat index is appraised at a fiery hot 38°C (100.4°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In September, the rain falls for 22.9 days. Throughout September, 147mm (5.79") of precipitation is accumulated. In Doumen, during the entire year, the rain falls for 231.8 days and collects up to 1216mm (47.87") of precipitation.

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 reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the UV index of 6 transforms into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Frequently asked questions

How hot is September?

The high-temperature, in September, in Doumen, records 30.3°C (86.5°F), while the low-temperature is 25.7°C (78.3°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 38°C (100.4°F).

What is the average humidity in September?

In Doumen, the average relative humidity in September is 78%.

How many days does it rain in September?

In Doumen, China, in September, it is raining for 22.9 days, with typically 147mm (5.79") of accumulated precipitation.

What is the average length of the day in September?

In Doumen, the average day length in September is 12h and 17min.

When are sunrise and sunset in September?

In September, on the first day of the month, 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.

How many hours of sunshine does Doumen have in September?

In September, the average sunshine duration in Doumen is 8.4h.

How high is the UV index in September?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in September
Doumen, China

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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in September - Doumen, China
  • Average daylight in September: 12h and 2min

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 2min

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 - 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 - 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 - 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 - 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).

Doumen, China

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