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 beginning of September records an average high-temperature of a still moderately hot 28.3°C (82.9°F), almost echoing the conditions of the previous month. Sewon experiences a mean temperature of 22.1°C (71.8°F) during September nights.Heat index
The heat index value during September is calculated to be a tropical 33°C (91.4°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. 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.
Humidity
September and October, with an average relative humidity of 79%, are the least humid months.Rainfall
In September, the rain falls for 13.9 days. Throughout September, 23mm (0.91") of precipitation is accumulated. Throughout the year, there are 245 rainfall days, and 906mm (35.67") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 4min.On the first day of September, sunrise is at 05:39 and sunset at 17:37. On the last day of the month, sunrise is at 05:23 and sunset at 17:33 WIB.
Sunshine
In Sewon, the average sunshine in September is 8.8h.UV index
The months with the highest UV index are February through May, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.Note: The UV index of 7 in September translates into these instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What are the least humid months?
What is the average humidity in September in Sewon?
How much does it rain in September?
How many hours of daylight does Sewon have in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Sewon?
What is the month with the highest UV index?
How high is the UV index in September?
Average temperature in September
Sewon, Indonesia
- Average high temperature in September: 28.3°C
The warmest month (with the highest average high temperature) is October (29.4°C).
The month with the lowest average high temperature is July (27.8°C).
- Average low temperature in September: 22.1°C
The months with the highest average low temperature are January and November (24.3°C).
The coldest month (with the lowest average low temperature) is August (21.9°C).
Average pressure in September
Sewon, Indonesia
- Average pressure in September: 1011.9mbar
The months with the highest atmospheric pressure are August and September (1011.9mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).
Average wind speed in September
Sewon, Indonesia
- Average wind speed in September: 13.4km/h
The windiest month (with the highest average wind speed) is August (14.5km/h).
The calmest month (with the lowest average wind speed) is March (8.4km/h).
Average humidity in September
Sewon, Indonesia
- Average humidity in September: 79%
The months with the highest relative humidity are May and June (82%).
The months with the lowest relative humidity are September and October (79%).
Average rainfall in September
Sewon, Indonesia
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is January (126mm).
The driest month (with the least rainfall) is August (14mm).
Average rainfall days in September
Sewon, Indonesia
- Average rainfall days in September: 13.9 days
The months with the highest number of rainy days are January, March and November (24.7 days).
The month with the least rainy days is August (11.4 days).
Average daylight in September /
Average sunshine in September
Sewon, Indonesia
- Average daylight in September: 12h and 1min
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: 8h and 5min
The month with the most sunshine is February (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).
Average sunshine days in September
Sewon, Indonesia
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is August (11.6 days).
The month with the least sunshine days is November (3.4 days).
Average UV index in September
Sewon, Indonesia
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, September, October, November and December (UV index 7).
The months with the lowest UV index are January, June, July and August (UV index 6).
Average cloud cover in September
Sewon, Indonesia
- Average cloud cover in September: 39
The months with the most cloud cover are January and December (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 35).
Average visibility in September
Sewon, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
