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
The commencement of September records an average high-temperature of a still hot 33.7°C (92.7°F), barely varying from August's 34.1°C (93.4°F). An average low-temperature of 22.9°C (73.2°F) is observed during the September nights.Heat index
In September, the average heat index is calculated to be a blazing hot 50°C (122°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.Note that heat index values are valued for light wind and location in the shade. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. 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 are quite important 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.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In September, the average relative humidity is 79%.Rainfall
In Bagansiapiapi, in September, during 24.2 rainfall days, 113mm (4.45") of precipitation is typically accumulated. Throughout the year, there are 270 rainfall days, and 1468mm (57.8") of precipitation is accumulated.Daylight
In September, the average length of the day in Bagansiapiapi is 12h and 8min.On the first day of the month, sunrise is at 06:12 and sunset at 18:21. On the last day of September, sunrise is at 06:03 and sunset at 18:09 WIB.
Sunshine
In September, the average sunshine is 8.3h.UV index
The months with the highest UV index are February through September, November and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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 many days does it rain in September?
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 in Bagansiapiapi?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
Bagansiapiapi, Indonesia
- Average high temperature in September: 33.7°C
The warmest month (with the highest average high temperature) is June (34.2°C).
The month with the lowest average high temperature is December (31.2°C).
- Average low temperature in September: 22.9°C
The month with the highest average low temperature is May (23.4°C).
The coldest month (with the lowest average low temperature) is January (22.5°C).
Average pressure in September
Bagansiapiapi, Indonesia
- Average pressure in September: 1010.3mbar
The months with the highest atmospheric pressure are January and February (1010.5mbar).
The month with the lowest atmospheric pressure is May (1009.3mbar).
Average wind speed in September
Bagansiapiapi, Indonesia
- Average wind speed in September: 3.8km/h
The windiest month (with the highest average wind speed) is June (4.3km/h).
The calmest months (with the lowest average wind speed) are April and November (3.6km/h).
Average humidity in September
Bagansiapiapi, Indonesia
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are June, July and August (77%).
Average rainfall in September
Bagansiapiapi, Indonesia
- Average rainfall in September: 113mm
The wettest month (with the highest rainfall) is October (191mm).
The driest month (with the least rainfall) is June (69mm).
Average rainfall days in September
Bagansiapiapi, Indonesia
- Average rainfall days in September: 24.2 days
The month with the highest number of rainy days is November (26.6 days).
The month with the least rainy days is June (16.5 days).
Average daylight in September /
Average sunshine in September
Bagansiapiapi, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 8h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Bagansiapiapi, Indonesia
- Average sunshine days in September: 4.6 days
The month with the most sunshine days is June (11.9 days).
The month with the least sunshine days is November (2.3 days).
Average UV index in September
Bagansiapiapi, Indonesia
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, November and December (UV index 7).
The months with the lowest UV index are January and October (UV index 6).
Average cloud cover in September
Bagansiapiapi, Indonesia
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 39).
Average visibility in September
Bagansiapiapi, Indonesia
- Average visibility in September: 8km
The months with the highest visibility are June and August (9km).
The months with the lowest visibility are January, April, May, November and December (7km).
