Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The arrival of September marks a slight shift to an average high-temperature of a still tropical 31.4°C (88.5°F) from August's 30.6°C (87.1°F). September generally records an average low-temperature of 23.3°C (73.9°F).Heat index
September's mean heat index is calculated to be a very hot 38°C (100.4°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The average relative humidity in September is 67%.Rainfall
The month with the least rainfall is September, when the rain falls for 5.4 days and typically collects 9mm (0.35") of precipitation.Daylight
In Rappokalling, the average length of the day in September is 12h and 5min.On the first day of September, sunrise is at 06:01 and sunset at 18:02. On the last day of the month, sunrise is at 05:47 and sunset at 17:56 WITA.
Sunshine
The average sunshine in September is 10h.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 hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily UV index of 7 turns into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
When is the highest UV index?
How high is the UV index in September?
Average temperature in September
Rappokalling, Indonesia
- Average high temperature in September: 31.4°C
The warmest month (with the highest average high temperature) is October (32.2°C).
The month with the lowest average high temperature is January (29.1°C).
- Average low temperature in September: 23.3°C
The month with the highest average low temperature is November (25.5°C).
The coldest month (with the lowest average low temperature) is August (23°C).
Average pressure in September
Rappokalling, Indonesia
- Average pressure in September: 1010.6mbar
The month with the highest atmospheric pressure is August (1010.8mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in September
Rappokalling, Indonesia
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is January (8.7km/h).
The calmest month (with the lowest average wind speed) is May (6.1km/h).
Average humidity in September
Rappokalling, Indonesia
- Average humidity in September: 67%
The months with the highest relative humidity are April and May (79%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Rappokalling, Indonesia
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is January (159mm).
The driest month (with the least rainfall) is September (9mm).
Average rainfall days in September
Rappokalling, Indonesia
- Average rainfall days in September: 5.4 days
The month with the highest number of rainy days is March (23.8 days).
The month with the least rainy days is August (4.9 days).
Average daylight in September /
Average sunshine in September
Rappokalling, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is December (Average sunshine: 10h and 6min).
The month with the least sunshine is May (Average sunshine: 6h and 48min).
Average sunshine days in September
Rappokalling, Indonesia
- Average sunshine days in September: 24.4 days
The month with the most sunshine days is August (25.1 days).
The month with the least sunshine days is March (4.1 days).
Average UV index in September
Rappokalling, 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
Rappokalling, Indonesia
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in September
Rappokalling, 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).
