September weather forecastTomohon, Indonesia
September
Weather in September
The first month of the autumn, September, is still a tropical month in Tomohon, Indonesia, with an average temperature fluctuating between 24°C (75.2°F) and 30.4°C (86.7°F).Temperature
The advent of September brings an average high-temperature of a still hot 30.4°C (86.7°F), almost identical to the preceding month. Throughout the nights in September, an average low-temperature of 24°C (75.2°F) is noted.Heat index
September's mean heat index is computed to be a fiery hot 38°C (100.4°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. 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 significance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
With an average relative humidity of 76%, September is the least humid month.Rainfall
September is the month with the least rainfall. Rain falls for 19.5 days and accumulates 69mm (2.72") of precipitation.Daylight
In Tomohon, Indonesia, the average length of the day in September is 12h and 7min.On the first day of the month, sunrise is at 05:36 and sunset at 17:44. On the last day of September, in Tomohon, sunrise is at 05:27 and sunset at 17:33 WITA.
Sunshine
September has the most sunshine of the year, with an average of 9.3h of sunshine.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 estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 7 in September suggests the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Tomohon, Indonesia
- Average high temperature in September: 30.4°C
The warmest month (with the highest average high temperature) is October (30.5°C).
The month with the lowest average high temperature is February (28.1°C).
- Average low temperature in September: 24°C
The month with the highest average low temperature is May (24.8°C).
The coldest month (with the lowest average low temperature) is March (23.8°C).
Average pressure in September
Tomohon, Indonesia
- Average pressure in September: 1010.1mbar
The month with the highest atmospheric pressure is September (1010.1mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in September
Tomohon, Indonesia
- Average wind speed in September: 5.7km/h
The windiest month (with the highest average wind speed) is February (8.2km/h).
The calmest month (with the lowest average wind speed) is May (5.3km/h).
Average humidity in September
Tomohon, Indonesia
- Average humidity in September: 76%
The months with the highest relative humidity are January, February and March (83%).
The month with the lowest relative humidity is September (76%).
Average rainfall in September
Tomohon, Indonesia
- Average rainfall in September: 69mm
The wettest month (with the highest rainfall) is June (161mm).
The driest month (with the least rainfall) is September (69mm).
Average rainfall days in September
Tomohon, Indonesia
- Average rainfall days in September: 19.5 days
The month with the highest number of rainy days is May (28.3 days).
The month with the least rainy days is September (19.5 days).
Average daylight in September /
Average sunshine in September
Tomohon, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is September (Average sunshine: 9h and 18min).
The months with the least sunshine are January and February (Average sunshine: 7h and 36min).
Average sunshine days in September
Tomohon, Indonesia
- Average sunshine days in September: 8 days
The month with the most sunshine days is August (8.6 days).
The month with the least sunshine days is November (1 days).
Average UV index in September
Tomohon, 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
Tomohon, Indonesia
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in September
Tomohon, 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).
