September weather forecast
Doumen, China

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.