September weather forecast
Shenzhen, China

September brings in some relief, as the summer's heat begins to subside in Shenzhen. Weather characteristics from the past dominate this month, among which, rainfall drops to a manageable 254mm (10"). This decrease in precipitation is closely followed by a dip in humidity levels. Therefore, September denotes the intersection of seasons and a subtle transition from summer into autumn.

Temperature

In September, Shenzhen notes an average high-temperature of a still hot 31.3°C (88.3°F), hardly different from the preceding month. Nighttime temperatures hover around an average low of 25°C (77°F) in September.

Heat index

Throughout September, the heat index is appraised at an extremely hot 41°C (105.8°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in September is 78.8%.

Rainfall

In September, in Shenzhen, the rain falls for 14.8 days. Throughout September, 254mm (10") of precipitation is accumulated. Throughout the year, in Shenzhen, there are 144.1 rainfall days, and 1936mm (76.22") of precipitation is accumulated.

Sea temperature

In Shenzhen, the average seawater temperature in September is 28.1°C (82.6°F).
Note: Water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are warm and delightful, ensuring comfort during water activities over extended periods.

Daylight

In September, the average length of the day in Shenzhen is 12h and 17min.
On the first day of September, sunrise is at 06:06 and sunset at 18:40. On the last day of the month, sunrise is at 06:14 and sunset at 18:12 CST.

Sunshine

The average sunshine in September is 5.7h.