September weather forecastKetelan, Indonesia
September
Weather in September
The first month of the spring, September, is still a tropical month in Ketelan, Indonesia, with an average temperature varying between 33.8°C (92.8°F) and 22.9°C (73.2°F).Temperature
Ketelan experiences an average high-temperature of a still tropical 33.8°C (92.8°F) in September, subtly different from August's 32.8°C (91°F). Ketelan's average low-temperature during September nights is observed to be a pleasant 22.9°C (73.2°F).Heat index
The average heat index in September is calculated to be a scorching 44°C (111.2°F). Attention: Heat exhaustion and heat cramps are anticipated. Prolonged effort can result in heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. 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 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The least humid month in Ketelan, Indonesia, is September, with an average relative humidity of 65%.Rainfall
In September, the rain falls for 11.2 days. Throughout September, 33mm (1.3") of precipitation is accumulated. In Ketelan, during the entire year, the rain falls for 251 days and collects up to 1388mm (54.65") of precipitation.Daylight
In September, the average length of the day in Ketelan is 12h and 4min.On the first day of September, sunrise is at 05:37 and sunset at 17:35. On the last day of the month, sunrise is at 05:21 and sunset at 17:31 WIB.
Sunshine
The average sunshine in September is 9.5h.UV index
The months with the highest UV index in Ketelan are February through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. 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. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ketelan, Indonesia
- Average high temperature in September: 33.8°C
The warmest month (with the highest average high temperature) is October (34.4°C).
The month with the lowest average high temperature is January (30.1°C).
- Average low temperature in September: 22.9°C
The month with the highest average low temperature is November (24.3°C).
The coldest month (with the lowest average low temperature) is July (21.9°C).
Average pressure in September
Ketelan, Indonesia
- Average pressure in September: 1011.3mbar
The months with the highest atmospheric pressure are August and September (1011.3mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Ketelan, Indonesia
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is January (7.7km/h).
The calmest month (with the lowest average wind speed) is April (4.9km/h).
Average humidity in September
Ketelan, Indonesia
- Average humidity in September: 65%
The months with the highest relative humidity are February and April (84%).
The month with the lowest relative humidity is September (65%).
Average rainfall in September
Ketelan, Indonesia
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is March (231mm).
The driest month (with the least rainfall) is August (20mm).
Average rainfall days in September
Ketelan, Indonesia
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is March (28.3 days).
The month with the least rainy days is August (9.4 days).
Average daylight in September /
Average sunshine in September
Ketelan, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 7h and 36min).
Average sunshine days in September
Ketelan, Indonesia
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is August (20.4 days).
The month with the least sunshine days is February (1.3 days).
Average UV index in September
Ketelan, Indonesia
- 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
Ketelan, Indonesia
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Ketelan, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are August, September and October (10km).
The months with the lowest visibility are January, February, March and April (8km).
