September weather forecastMijen, Indonesia
September
Weather in September
September, the first month of the spring in Mijen, is still a tropical month, with temperature in the range of an average high of 33.2°C (91.8°F) and an average low of 23.8°C (74.8°F).Temperature
The beginning of September records an average high-temperature of a still hot 33.2°C (91.8°F), almost echoing the conditions of the previous month. Throughout September, the average low-temperature in Mijen dips to a moderately hot 23.8°C (74.8°F).Heat index
For September, the heat index is computed to be a blistering 42°C (107.6°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Note that heat index values are valued for light wind and location in the shade. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
September is the least humid month in Mijen, with an average relative humidity of 66%.Rainfall
In Mijen, in September, during 11.6 rainfall days, 28mm (1.1") of precipitation is typically accumulated. In Mijen, during the entire year, the rain falls for 238 days and collects up to 1087mm (42.8") of precipitation.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 17:38. On the last day of the month, sunrise is at 05:23 and sunset at 17:33 WIB.
Sunshine
In September, the average sunshine is 9.7h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. 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 threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mijen, Indonesia
- Average high temperature in September: 33.2°C
The warmest month (with the highest average high temperature) is October (33.4°C).
The months with the lowest average high temperature are January and February (29.8°C).
- Average low temperature in September: 23.8°C
The month with the highest average low temperature is November (25.1°C).
The coldest months (with the lowest average low temperature) are July and August (23.3°C).
Average pressure in September
Mijen, Indonesia
- Average pressure in September: 1011.1mbar
The months with the highest atmospheric pressure are August and September (1011.1mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Mijen, Indonesia
- Average wind speed in September: 8.6km/h
The windiest month (with the highest average wind speed) is January (10.5km/h).
The calmest month (with the lowest average wind speed) is April (5.9km/h).
Average humidity in September
Mijen, Indonesia
- Average humidity in September: 66%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is September (66%).
Average rainfall in September
Mijen, Indonesia
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is January (192mm).
The driest month (with the least rainfall) is August (16mm).
Average rainfall days in September
Mijen, Indonesia
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is January (27.7 days).
The month with the least rainy days is August (9.5 days).
Average daylight in September /
Average sunshine in September
Mijen, 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 month with the most sunshine is August (Average sunshine: 9h and 48min).
The months with the least sunshine are January and December (Average sunshine: 8h and 0min).
Average sunshine days in September
Mijen, Indonesia
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is August (19.6 days).
The month with the least sunshine days is January (2.1 days).
Average UV index in September
Mijen, 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
Mijen, Indonesia
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Mijen, 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).





