September weather forecast
Sentul, Malaysia

September, the first month of the autumn in Sentul, is still a hot month, with an average temperature varying between 32.2°C (90°F) and 23.2°C (73.8°F).

Temperature

Sentul experiences an average high-temperature of a still hot 32.2°C (90°F) with the onset of September, subtly varied from August's 32.3°C (90.1°F). Sentul's nighttime temperature during September is consistently averaged at a warm 23.2°C (73.8°F).

Heat index

During September, the heat index is estimated at a blistering 43°C (109.4°F). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.
Heat index determinations are made taking into account the shade and light air movements. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. 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.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in September in Sentul is 74%.

Rainfall

September is the month with the least rainfall. Rain falls for 23.3 days and accumulates 62mm (2.44") of precipitation.

Daylight

The average length of the day in September 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, sunrise is at 7:00 am and sunset at 7:05 pm +08.

Sunshine

In Sentul, the average sunshine in September is 8.7h.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.