September weather forecast
Long Seniai, Malaysia

September

Weather in September

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

Temperature

September proves to be the warmest month, recording an average peak temperature of 30.7°C (87.3°F) and a minimum temperature of 19.6°C (67.3°F).

Heat index

Throughout September, the heat index is computed to be a blisteringly hot 40°C (104°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

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

Rainfall

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

Daylight

The average length of the day in September in Long Seniai is 12h and 8min.
On the first day of the month, sunrise is at 6:14 am and sunset at 6:25 pm. On the last day of September, sunrise is at 6:07 am and sunset at 6:12 pm +08.

Sunshine

In Long Seniai, 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 threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

What month is the hottest in Long Seniai?
Long Seniai's temperatures tend to reach their peak averages in September, with a high of 30.7°C (87.3°F) and a low of 19.6°C (67.3°F).
How hot is it in Long Seniai in September?
In September, in Long Seniai, the average high-temperature is 30.7°C (87.3°F), and the average low-temperature is 19.6°C (67.3°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in September is computed to be 40°C (104°F).
What are the least humid months in Long Seniai?
July through September, with an average relative humidity of 81%, are the least humid months in Long Seniai, Malaysia.
What is the average humidity in September in Long Seniai?
In Long Seniai, Malaysia, the average relative humidity in September is 81%.
What is the driest month in Long Seniai?
September is the month with the least rainfall. Rain falls for 26 days and accumulates 107mm (4.21") of precipitation.
How much does it rain in Long Seniai in September?
In Long Seniai, in September, during 26 rainfall days, 107mm (4.21") of precipitation is typically accumulated.
What is the average length of the day in September in Long Seniai?
The average day length in September is 12h and 8min.
When is the sunrise / sunset in September in Long Seniai?
On the first day of September in Long Seniai, Malaysia, sunrise is at 6:14 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 6:12 pm +08.
How long on average sun shines in September in Long Seniai?
The average sunshine duration in September in Long Seniai, Malaysia, is 7.9h.
What is the month with the highest UV index in Long Seniai?
January, March through December, with an average maximum UV index of 6, are months with the highest UV index in Long Seniai, Malaysia.
What is the UV index reading in September in Long Seniai?
In Long Seniai, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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 Seniai, 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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