September weather forecastMuntilan, Indonesia
September
Weather in September
September, the first month of the spring in Muntilan, is still a tropical month, with an average temperature varying between 30.5°C (86.9°F) and 22.8°C (73°F).Temperature
September's onset sees an average high-temperature of a still tropical 30.5°C (86.9°F), exhibiting a slight fluctuation from the previous month. During the month of September, the temperature generally drops to a low average of 22.8°C (73°F).Heat index
In September, the heat index is evaluated at a torrid 37°C (98.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. 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. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
September is the least humid month in Muntilan, with an average relative humidity of 71%.Rainfall
In Muntilan, in September, during 12 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, there are 256.4 rainfall days, and 1381mm (54.37") of precipitation is accumulated.Daylight
In Muntilan, the average length of the day in September is 12h and 4min.On the first day of the month, sunrise is at 05:39 and sunset at 17:37. On the last day of September, sunrise is at 05:23 and sunset at 17:33 WIB.
Sunshine
August and September, with an average of 9.7h of sunshine, are months with the most sunshine.UV index
February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 7 during September translates into the following guidance:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Muntilan, Indonesia
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is October (31°C).
The month with the lowest average high temperature is February (28.3°C).
- Average low temperature in September: 22.8°C
The month with the highest average low temperature is December (24.5°C).
The coldest month (with the lowest average low temperature) is July (22.6°C).
Average pressure in September
Muntilan, Indonesia
- Average pressure in September: 1011.5mbar
The month with the highest atmospheric pressure is September (1011.5mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).
Average wind speed in September
Muntilan, Indonesia
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is January (10.2km/h).
The calmest months (with the lowest average wind speed) are April and November (5.5km/h).
Average humidity in September
Muntilan, Indonesia
- Average humidity in September: 71%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is September (71%).
Average rainfall in September
Muntilan, Indonesia
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is January (235mm).
The driest month (with the least rainfall) is August (22mm).
Average rainfall days in September
Muntilan, Indonesia
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is January (28.9 days).
The month with the least rainy days is August (10 days).
Average daylight in September /
Average sunshine in September
Muntilan, 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 42min
The months with the most sunshine are August and September (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 7h and 48min).
Average sunshine days in September
Muntilan, Indonesia
- Average sunshine days in September: 15 days
The month with the most sunshine days is August (18.1 days).
The months with the least sunshine days are January and February (0.8 days).
Average UV index in September
Muntilan, 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
Muntilan, Indonesia
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Muntilan, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).





