September weather forecastKawangu, Indonesia
September weather forecast for Kawangu, Indonesia: The ideal sea water temperature of 27°C (80.6°F) and only 4.4 rainfall days, with 6mm (0.24") of accumulated rainfall, makes September the best time for swimming and other water activities. The first month of the spring, September, is still a warm month in Kawangu, Indonesia, with an average temperature ranging between max 29.1°C (84.4°F) and min 23.2°C (73.8°F).
September
Weather in September
The first month of the spring, September, is still a warm month in Kawangu, Indonesia, with an average temperature ranging between max 29.1°C (84.4°F) and min 23.2°C (73.8°F).The ideal sea water temperature of 27°C (80.6°F) and only 4.4 rainfall days, with 6mm (0.24") of accumulated rainfall, makes September the best time for swimming and other water activities.
Temperature
The arrival of September records an average high-temperature of a still warm 29.1°C (84.4°F), closely related to the 27.9°C (82.2°F) observed in August. An average low-temperature of 23.2°C (73.8°F) is noted during the nights in September.Heat index
September's mean heat index is computed to be a tropical 34°C (93.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.Remember that heat index calculations are made for conditions in the shade with light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In September, the average relative humidity is 73%.Rainfall
In September, the rain falls for 4.4 days. Throughout September, 6mm (0.24") of precipitation is accumulated. In Kawangu, during the entire year, the rain falls for 191.2 days and collects up to 892mm (35.12") of precipitation.Sea temperature
In Kawangu, the average seawater temperature in September is 27°C (80.6°F).Note: For swimming, diving, or other water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) provide the most enjoyable experience for extended periods without discomfort.
Daylight
In September, the average length of the day is 12h and 3min.On the first day of the month, sunrise is at 06:00 and sunset at 17:56. On the last day of September, sunrise is at 05:42 and sunset at 17:53 WITA.
Sunshine
The average sunshine in September is 9.6h.UV index
The months with the highest UV index are January through June, August through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be mindful! Sand and water reflections can up the Sun's UV exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kawangu, Indonesia
- Average high temperature in September: 29.1°C
The warmest months (with the highest average high temperature) are October and November (30.5°C).
The month with the lowest average high temperature is July (27.3°C).
- Average low temperature in September: 23.2°C
The month with the highest average low temperature is December (25.6°C).
The coldest month (with the lowest average low temperature) is August (22.8°C).
Average pressure in September
Kawangu, Indonesia
- Average pressure in September: 1012mbar
The month with the highest atmospheric pressure is August (1012.5mbar).
The months with the lowest atmospheric pressure are January and December (1007.9mbar).
Average wind speed in September
Kawangu, Indonesia
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is July (16.5km/h).
The calmest month (with the lowest average wind speed) is March (8.2km/h).
Average humidity in September
Kawangu, Indonesia
- Average humidity in September: 73%
The months with the highest relative humidity are January, February and March (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Kawangu, Indonesia
- Average rainfall in September: 6mm
The wettest month (with the highest rainfall) is January (181mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in September
Kawangu, Indonesia
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is January (29.7 days).
The month with the least rainy days is August (1.9 days).
Average sea temperature in September
Kawangu, Indonesia
- Average sea temperature in September: 27°C
The best month for swimming (with the highest average sea temperature) is December (30.1°C).
The coldest months (with the lowest average sea temperature) are July and August (26.3°C).
Average daylight in September /
Average sunshine in September
Kawangu, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 42min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is November (Average sunshine: 10h and 36min).
The month with the least sunshine is May (Average sunshine: 6h and 54min).
Average sunshine days in September
Kawangu, Indonesia
- Average sunshine days in September: 23.9 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is January (0.3 days).
Average UV index in September
Kawangu, Indonesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, August, September, October, November and December (UV index 7).
The month with the lowest UV index is July (UV index 6).
Average cloud cover in September
Kawangu, Indonesia
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 13).
Average visibility in September
Kawangu, 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).





