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 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 arrival of September brings an average high-temperature of a warm 29.8°C (85.6°F), subtly diverging from August's 30.5°C (86.9°F). Nighttime temperature lowers to an average of 24.5°C (76.1°F) in September.Heat index
The heat index value during September is computed to be a torrid 36°C (96.8°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Given the heat index, its values are aligned with shaded sites and gentle winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Simpang Tiga Redelong, during September, the rain falls for 26.9 days and regularly aggregates up to 131mm (5.16") of precipitation. Throughout the year, there are 301.7 rainfall days, and 1488mm (58.58") of precipitation is accumulated.Snowfall
The only month with snowfall is September. The month with the most snowfall is September, when snow falls for 0.1 days and typically aggregates up to 1mm (0.04") of snow.Daylight
In September, the average length of the day is 12h and 9min.On the first day of September, sunrise is at 06:26 and sunset at 18:38. On the last day of the month, sunrise is at 06:20 and sunset at 18:24 WIB.
Sunshine
In September, the average sunshine is 8.7h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 7 during September translates into the following directions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in September?
What is the snowiest month?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What are the months with the lowest UV index?
What is the UV index intensity in September in Simpang Tiga Redelong?
Average temperature in September
Simpang Tiga Redelong, Indonesia
- Average high temperature in September: 29.8°C
The warmest month (with the highest average high temperature) is June (30.9°C).
The month with the lowest average high temperature is January (28.3°C).
- Average low temperature in September: 24.5°C
The month with the highest average low temperature is May (25.2°C).
The coldest month (with the lowest average low temperature) is January (23.6°C).
Average pressure in September
Simpang Tiga Redelong, Indonesia
- Average pressure in September: 1010.6mbar
The month with the highest atmospheric pressure is January (1011mbar).
The months with the lowest atmospheric pressure are May and June (1009.6mbar).
Average wind speed in September
Simpang Tiga Redelong, Indonesia
- Average wind speed in September: 7.1km/h
The windiest months (with the highest average wind speed) are January and December (8.4km/h).
The calmest month (with the lowest average wind speed) is July (7km/h).
Average humidity in September
Simpang Tiga Redelong, Indonesia
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (80%).
The months with the lowest relative humidity are June, July and August (75%).
Average rainfall in September
Simpang Tiga Redelong, Indonesia
- Average rainfall in September: 131mm
The wettest month (with the highest rainfall) is December (193mm).
The driest month (with the least rainfall) is February (70mm).
Average rainfall days in September
Simpang Tiga Redelong, Indonesia
- Average rainfall days in September: 26.9 days
The month with the highest number of rainy days is November (28.5 days).
The month with the least rainy days is February (18.4 days).
Average snowfall in September
Simpang Tiga Redelong, Indonesia
- Average snowfall in September: 1mm
The month with the highest snowfall is September (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0mm).
Average snowfall days in September
Simpang Tiga Redelong, Indonesia
- 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
Simpang Tiga Redelong, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is March (Average sunshine: 9h and 12min).
The months with the least sunshine are November and December (Average sunshine: 8h and 0min).
Average sunshine days in September
Simpang Tiga Redelong, Indonesia
- Average sunshine days in September: 1.5 days
The months with the most sunshine days are February and March (7 days).
The month with the least sunshine days is November (0.6 days).
Average UV index in September
Simpang Tiga Redelong, Indonesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Simpang Tiga Redelong, Indonesia
- Average cloud cover in September: 38
The month with the most cloud cover is November (Cloud cover 44).
The month with the least cloud cover is March (Cloud cover 27).
Average visibility in September
Simpang Tiga Redelong, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).
