Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year?
How hot is it in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
How many hours of daylight does Long Apu have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Long Apu have in September?
What are the months with the highest UV index?
How high is the UV index in September?
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).
