September weather forecastSempong, Indonesia
September
Weather in September
The first month of the spring, September, is a tropical month in Sempong, Indonesia, with an average temperature fluctuating between 30.6°C (87.1°F) and 22.6°C (72.7°F).Temperature
September's average high-temperature stands at a hot 30.6°C (87.1°F), showing little deviation from August's 29.9°C (85.8°F). Throughout September, an average low-temperature of 22.6°C (72.7°F) is experienced in Sempong.Heat index
Throughout September, the heat index is appraised at a very hot 37°C (98.6°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. 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 are essentially critical for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 71%.Rainfall
In Sempong, in September, it is raining for 10.7 days, with typically 22mm (0.87") of accumulated precipitation. In Sempong, during the entire year, the rain falls for 244.1 days and collects up to 1216mm (47.87") of precipitation.Daylight
In Sempong, Indonesia, the average length of the day in September is 12h and 4min.On the first day of September in Sempong, sunrise is at 05:46 and sunset at 17:45. On the last day of the month, sunrise is at 05:30 and sunset at 17:40 WIB.
Sunshine
The months with the most sunshine are July through September, with an average of 9.7h of sunshine.UV index
The months with the highest UV index in Sempong, Indonesia, are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 7 in September translates into these instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sempong, Indonesia
- Average high temperature in September: 30.6°C
The warmest month (with the highest average high temperature) is October (31.4°C).
The month with the lowest average high temperature is February (29.3°C).
- Average low temperature in September: 22.6°C
The month with the highest average low temperature is December (25.2°C).
The coldest month (with the lowest average low temperature) is August (22.5°C).
Average pressure in September
Sempong, Indonesia
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is September (1011.4mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in September
Sempong, Indonesia
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is August (12.8km/h).
The calmest month (with the lowest average wind speed) is April (7km/h).
Average humidity in September
Sempong, Indonesia
- Average humidity in September: 71%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are September and October (71%).
Average rainfall in September
Sempong, Indonesia
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is February (207mm).
The driest month (with the least rainfall) is August (13mm).
Average rainfall days in September
Sempong, Indonesia
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is August (7.2 days).
Average daylight in September /
Average sunshine in September
Sempong, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in September: 9h and 42min
The months with the most sunshine are July, August and September (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 8h and 18min).
Average sunshine days in September
Sempong, Indonesia
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is February (0.9 days).
Average UV index in September
Sempong, 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
Sempong, Indonesia
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Sempong, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).
