September weather forecastCiwedus, Indonesia
September
Weather in September
September, the first month of the spring in Ciwedus, is still a tropical month, with an average temperature fluctuating between 30.8°C (87.4°F) and 25°C (77°F).Temperature
As Ciwedus welcomes September, the average high-temperature is noted at a still hot 30.8°C (87.4°F), closely aligning with the preceding month. Nighttime temperature dips to a mean of 25°C (77°F) during September.Heat index
The heat index value for September is computed to be a torrid 37°C (98.6°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 71%.Rainfall
In Ciwedus, Indonesia, during September, the rain falls for 9.6 days and regularly aggregates up to 26mm (1.02") of precipitation. In Ciwedus, during the entire year, the rain falls for 243.3 days and collects up to 1085mm (42.72") of precipitation.Daylight
In September, the average length of the day is 12h and 4min.On the first day of the month, sunrise is at 05:55 and sunset at 17:55. On the last day of September, in Ciwedus, Indonesia, sunrise is at 05:41 and sunset at 17:50 WIB.
Sunshine
The month with the most sunshine is September, with an average of 9.3h of sunshine.UV index
The months with the highest UV index in Ciwedus 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 estimate of 6 to 7 represents a high health hazard 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:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ciwedus, Indonesia
- Average high temperature in September: 30.8°C
The warmest month (with the highest average high temperature) is October (31.5°C).
The month with the lowest average high temperature is January (29.5°C).
- Average low temperature in September: 25°C
The month with the highest average low temperature is May (26.5°C).
The coldest months (with the lowest average low temperature) are August and September (25°C).
Average pressure in September
Ciwedus, Indonesia
- Average pressure in September: 1011.1mbar
The month with the highest atmospheric pressure is September (1011.1mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in September
Ciwedus, Indonesia
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is December (12.5km/h).
The calmest month (with the lowest average wind speed) is September (6.8km/h).
Average humidity in September
Ciwedus, Indonesia
- Average humidity in September: 71%
The months with the highest relative humidity are February and March (77%).
The months with the lowest relative humidity are September and October (71%).
Average rainfall in September
Ciwedus, Indonesia
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is January (175mm).
The driest month (with the least rainfall) is August (21mm).
Average rainfall days in September
Ciwedus, Indonesia
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is March (26.3 days).
The month with the least rainy days is September (9.6 days).
Average daylight in September /
Average sunshine in September
Ciwedus, 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 48min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is September (Average sunshine: 9h and 18min).
The month with the least sunshine is June (Average sunshine: 7h and 0min).
Average sunshine days in September
Ciwedus, Indonesia
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is August (18.8 days).
The month with the least sunshine days is February (1.4 days).
Average UV index in September
Ciwedus, 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
Ciwedus, Indonesia
- Average cloud cover in September: 25
The months with the most cloud cover are January and December (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in September
Ciwedus, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).





