September weather forecast
Long Apu, Malaysia

September

Weather in September

The first month of the autumn, September, is also a hot month in Long Apu, Malaysia, with an average temperature fluctuating between 30.7°C (87.3°F) and 19.6°C (67.3°F).

Temperature

September, with its high-temperature average of 30.7°C (87.3°F) and a low-temperature average of 19.6°C (67.3°F), is the warmest month.

Heat index

The average heat index in September is calculated to be a blistering 40°C (104°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

July through September, with an average relative humidity of 81%, are the least humid months.

Rainfall

The month with the least rainfall is September, when the rain falls for 26 days and typically collects 107mm (4.21") of precipitation.

Daylight

In Long Apu, the average length of the day in September is 12h and 8min.
On the first day of September, sunrise is at 6:15 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 6:13 pm +08.

Sunshine

The average sunshine in September is 7.9h.

UV index

The months with the highest UV index are January, March through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: In September, a regular UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

What is the hottest time of year?
With its average high temperature of 30.7°C (87.3°F) and a low of 19.6°C (67.3°F), September is regarded as the warmest month.
How hot is it in September?
An average high-temperature, in September, in Long Apu, is 30.7°C (87.3°F) and the average low-temperature is 19.6°C (67.3°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 40°C (104°F).
What is the least humid month?
July through September, with an average relative humidity of 81%, are the least humid months.
What is the average humidity in September?
In Long Apu, Malaysia, the average relative humidity in September is 81%.
What is the driest month?
September is the month with the least rainfall in Long Apu. Rain falls for 26 days and accumulates 107mm (4.21") of precipitation.
How much does it rain in September?
In Long Apu, in September, it is raining for 26 days, with typically 107mm (4.21") of accumulated precipitation.
How many hours of daylight does Long Apu have in September?
In Long Apu, the average day length in September is 12h and 8min.
When is the sunrise / sunset in September?
In September, on the first day of the month, sunrise is at 6:15 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 6:13 pm +08.
How many hours of sunshine does Long Apu have in September?
In September, the average sunshine duration is 7.9h.
What are the months with the highest UV index?
January, March through December, with an average maximum UV index of 6, are months with the highest UV index.
How high is the UV index in September?
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Long Apu, Malaysia
  • Average high temperature in September: 30.7°C

The warmest month (with the highest average high temperature) is September (30.7°C).
The month with the lowest average high temperature is January (28.7°C).

  • Average low temperature in September: 19.6°C

The month with the highest average low temperature is May (20.1°C).
The coldest month (with the lowest average low temperature) is July (19.1°C).

Average pressure in September
Long Apu, Malaysia
  • Average pressure in September: 1010.7mbar

The month with the highest atmospheric pressure is March (1011mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed in September
Long Apu, Malaysia
  • Average wind speed in September: 3.4km/h

The windiest months (with the highest average wind speed) are July, August, September and October (3.4km/h).
The calmest month (with the lowest average wind speed) is November (3.1km/h).

Average humidity in September
Long Apu, Malaysia
  • Average humidity in September: 81%

The months with the highest relative humidity are January, November and December (87%).
The months with the lowest relative humidity are July, August and September (81%).

Average rainfall in September
Long Apu, Malaysia
  • Average rainfall in September: 107mm

The wettest month (with the highest rainfall) is April (296mm).
The driest month (with the least rainfall) is September (107mm).

Average rainfall days in September
Long Apu, Malaysia
  • Average rainfall days in September: 26 days

The month with the highest number of rainy days is December (30 days).
The month with the least rainy days is June (23.8 days).

Average daylight in September /
Average sunshine in September
Long Apu, Malaysia
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 24min).

Average sunshine days in September
Long Apu, Malaysia
  • Average sunshine days in September: 3.5 days

The month with the most sunshine days is June (4.5 days).
The month with the least sunshine days is November (0.6 days).

Average UV index in September
Long Apu, Malaysia
  • Average UV index in September: 6

The months with the highest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 6).
The month with the lowest UV index is February (UV index 5).

Average cloud cover in September
Long Apu, Malaysia
  • Average cloud cover in September: 50

The months with the most cloud cover are January and November (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 48).

Average visibility in September
Long Apu, Malaysia
  • Average visibility in September: 7km

The months with the highest visibility are May, June, July, August, September and October (7km).
The months with the lowest visibility are January, February, March, April, November and December (6km).

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