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 snowfall 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
The initiation of September sees an average high-temperature of a still tropical 31°C (87.8°F), maintaining the same temperature as the previous month. The average temperature during September nights in Siliau is registered at a warm 23.6°C (74.5°F).Heat index
The heat index value for September is estimated at an extremely hot 40°C (104°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.Consider that heat index readings are for situations in the shade and light wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 23.4 days and typically collects 61mm (2.4") of precipitation.Snowfall
September is the only month when snow falls in Siliau, Malaysia. September has the most snowfall days of the year in Siliau. Snow falls for 0.1 days.Daylight
In Siliau, the average length of the day in September is 12h and 8min.On the first day of September, sunrise is at 7:07 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 7:05 pm +08.
Sunshine
The months with the most sunshine in Siliau are June, July and September, with an average of 8.8h of sunshine.UV index
The months with the highest UV index in Siliau are February through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily UV index of 7 turns into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. 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. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Siliau during September?
What is the least humid month in Siliau?
What is the average humidity in September in Siliau?
What is the driest month in Siliau?
How many days does it rain in September in Siliau?
What is the snowiest month in Siliau?
When does it start to snow in Siliau?
What is the average length of the day in September in Siliau?
What time are sunrise and sunset in September in Siliau?
What are the months with the most sunshine in Siliau?
How many hours of sunshine does Siliau have in September?
What is the month with the highest UV index in Siliau?
What is the UV index reading in September in Siliau?
Average temperature in September
Siliau, Malaysia
- Average high temperature in September: 31°C
The warmest month (with the highest average high temperature) is March (31.8°C).
The month with the lowest average high temperature is December (30°C).
- Average low temperature in September: 23.6°C
The month with the highest average low temperature is May (24.3°C).
The coldest months (with the lowest average low temperature) are January and February (22.8°C).
Average pressure in September
Siliau, Malaysia
- Average pressure in September: 1009.7mbar
The month with the highest atmospheric pressure is January (1010.4mbar).
The month with the lowest atmospheric pressure is May (1008.7mbar).
Average wind speed in September
Siliau, Malaysia
- Average wind speed in September: 5.4km/h
The windiest month (with the highest average wind speed) is February (5.8km/h).
The calmest months (with the lowest average wind speed) are April and November (4.7km/h).
Average humidity in September
Siliau, Malaysia
- Average humidity in September: 76%
The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are August and September (76%).
Average rainfall in September
Siliau, Malaysia
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is April (177mm).
The driest month (with the least rainfall) is September (61mm).
Average rainfall days in September
Siliau, Malaysia
- Average rainfall days in September: 23.4 days
The month with the highest number of rainy days is April (27.5 days).
The month with the least rainy days is July (21.7 days).
Average snowfall days in September
Siliau, Malaysia
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Siliau, 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: 12h and 0min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June, July and September (Average sunshine: 8h and 48min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in September
Siliau, Malaysia
- Average sunshine days in September: 5.4 days
The month with the most sunshine days is July (6.6 days).
The month with the least sunshine days is April (1.8 days).
Average UV index in September
Siliau, Malaysia
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).
Average cloud cover in September
Siliau, Malaysia
- Average cloud cover in September: 37
The month with the most cloud cover is November (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Siliau, Malaysia
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
