September weather forecastSorong, Indonesia
September
Weather in September
September weather brings with it a slight increase in temperature, with peaks observed at 29.1°C (84.4°F). In this month, Sorong sees relatively less rainfall, recording a quantity of 102mm (4.02"). This decline in rainfall along with stable temperatures contributes to a slightly drier atmosphere compared to August. Regardless, the diversity in weather conditions continues to showcase Sorong's dynamic tropical character.Temperature
The transition into September notes an average high-temperature of a still warm 29.1°C (84.4°F), revealing a mild distinction from the 28.8°C (83.8°F) in August. In September, the average low-temperature is a still moderately hot 24°C (75.2°F).Heat index
For most parts of September, the heat index is estimated at a sweltering 36°C (96.8°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Factoring in the heat index, values are geared towards shaded areas with light breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
In September, the average relative humidity in Sorong is 83%.Rainfall
September is the month with the least rainfall. Rain falls for 23.7 days and accumulates 102mm (4.02") of precipitation.Sea temperature
In September, the average sea temperature is 28.4°C (83.1°F).Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.
Daylight
The average length of the day in September is 12h and 7min.On the first day of September in Sorong, sunrise is at 06:11 and sunset at 18:17. On the last day of the month, sunrise is at 06:01 and sunset at 18:08 WIT.
Sunshine
In Sorong, the average sunshine in September is 7.1h.UV index
The months with the highest UV index are January through July, September and October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 7 in September leads to these guidelines:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sorong, Indonesia
- Average high temperature in September: 29.1°C
The warmest month (with the highest average high temperature) is November (30.5°C).
The month with the lowest average high temperature is August (28.8°C).
- Average low temperature in September: 24°C
The months with the highest average low temperature are January, February, March, November and December (25.3°C).
The coldest month (with the lowest average low temperature) is September (24°C).
Average pressure in September
Sorong, Indonesia
- Average pressure in September: 1010.1mbar
The months with the highest atmospheric pressure are August and September (1010.1mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).
Average wind speed in September
Sorong, Indonesia
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is August (10.5km/h).
The calmest month (with the lowest average wind speed) is May (6.1km/h).
Average humidity in September
Sorong, Indonesia
- Average humidity in September: 83%
The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are January and February (79%).
Average rainfall in September
Sorong, Indonesia
- Average rainfall in September: 102mm
The wettest month (with the highest rainfall) is December (186mm).
The driest month (with the least rainfall) is September (102mm).
Average rainfall days in September
Sorong, Indonesia
- Average rainfall days in September: 23.7 days
The month with the highest number of rainy days is December (29.1 days).
The month with the least rainy days is October (22.6 days).
Average sea temperature in September
Sorong, Indonesia
- Average sea temperature in September: 28.4°C
The best month for swimming (with the highest average sea temperature) is April (29.4°C).
The coldest month (with the lowest average sea temperature) is August (28.3°C).
Average daylight in September /
Average sunshine in September
Sorong, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 6min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is November (Average sunshine: 10h and 12min).
The month with the least sunshine is July (Average sunshine: 6h and 42min).
Average sunshine days in September
Sorong, Indonesia
- Average sunshine days in September: 4.1 days
The month with the most sunshine days is July (6.9 days).
The month with the least sunshine days is December (1.1 days).
Average UV index in September
Sorong, Indonesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, September and October (UV index 7).
The months with the lowest UV index are August, November and December (UV index 6).
Average cloud cover in September
Sorong, Indonesia
- Average cloud cover in September: 52
The months with the most cloud cover are July and August (Cloud cover 57).
The month with the least cloud cover is November (Cloud cover 41).
Average visibility in September
Sorong, Indonesia
- Average visibility in September: 9km
The months with the highest visibility are January, February, June, October and December (10km).
The months with the lowest visibility are March, April, May, July, August, September and November (9km).





