September weather forecastDemak, Indonesia
September
Weather in September
September, the first month of the spring in Demak, is also a hot month, with an average temperature fluctuating between 23.8°C (74.8°F) and 33°C (91.4°F).Temperature
September's average high-temperature stands at a still tropical 33°C (91.4°F), showing little deviation from August's 32°C (89.6°F). Throughout the month of September, the average temperature dips to a moderately hot 23.8°C (74.8°F) at night.Heat index
September's average heat index is computed to be an extremely hot 42°C (107.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Observations indicate that the heat index values are for shady locations with light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
With an average relative humidity of 66%, September is the least humid month.Rainfall
In September, the rain falls for 10.5 days. Throughout September, 25mm (0.98") of precipitation is accumulated. In Demak, during the entire year, the rain falls for 239.6 days and collects up to 1140mm (44.88") of precipitation.Daylight
In Demak, the average length of the day in September is 12h and 4min.On the first day of September in Demak, sunrise is at 05:37 and sunset at 17:36. On the last day of the month, sunrise is at 05:22 and sunset at 17:32 WIB.
Sunshine
In September, the average sunshine in Demak is 9.7h.UV index
The months with the highest UV index 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 in Demak. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Demak, Indonesia
- Average high temperature in September: 33°C
The warmest month (with the highest average high temperature) is October (33.5°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 (25.3°C).
The coldest months (with the lowest average low temperature) are July and August (23.3°C).
Average pressure in September
Demak, Indonesia
- Average pressure in September: 1011.2mbar
The month with the highest atmospheric pressure is September (1011.2mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Demak, Indonesia
- Average wind speed in September: 8.5km/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
Demak, 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
Demak, Indonesia
- Average rainfall in September: 25mm
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
Demak, Indonesia
- Average rainfall days in September: 10.5 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
Demak, 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 month with the least sunshine is December (Average sunshine: 7h and 48min).
Average sunshine days in September
Demak, Indonesia
- Average sunshine days in September: 17 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
Demak, 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
Demak, 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
Demak, 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).
