September weather forecast
Serdang Lama, Malaysia

The first month of the autumn, September, is still a tropical month in Serdang Lama, Malaysia, with an average temperature fluctuating between 23.3°C (73.9°F) and 31.7°C (89.1°F).

Temperature

The average high-temperature for September is a still tropical 31.7°C (89.1°F), closely aligning with the temperature of the preceding month. During September, Serdang Lama's temperature averages to a moderately hot 23.3°C (73.9°F) at night.

Heat index

In September, the average heat index is estimated at a scorching 41°C (105.8°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In September, the average relative humidity in Serdang Lama is 75%.

Rainfall

In Serdang Lama, Malaysia, during September, the rain falls for 25.6 days and regularly aggregates up to 59mm (2.32") of precipitation. Throughout the year, in Serdang Lama, there are 300.2 rainfall days, and 868mm (34.17") of precipitation is accumulated.

Daylight

In September, the average length of the day in Serdang Lama is 12h and 8min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:18 pm. On the last day of September, in Serdang Lama, sunrise is at 7:00 am and sunset at 7:05 pm +08.

Sunshine

In September, the average sunshine is 8.6h.

UV index

February through October and December, with an average maximum UV index of 7, are months with the highest UV index in Serdang Lama. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.