September weather forecastSibuluan, Indonesia
September
Weather in September
September, the first month of the autumn in Sibuluan, is still a warm month, with an average temperature varying between 28°C (82.4°F) and 21.5°C (70.7°F).Temperature
As September takes its course, Sibuluan's average high-temperature registers at a still warm 28°C (82.4°F), closely aligning with the preceding month. Sibuluan's average low-temperature in the month of September is recorded at an agreeable 21.5°C (70.7°F).Heat index
For September, the heat index is computed to be a hot 32°C (89.6°F). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In Sibuluan, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 22.5 days. Throughout September, 118mm (4.65") of precipitation is accumulated. In Sibuluan, during the entire year, the rain falls for 285.3 days and collects up to 1792mm (70.55") of precipitation.Daylight
In Sibuluan, the average length of the day in September is 12h and 8min.On the first day of the month, sunrise is at 06:20 and sunset at 18:30. On the last day of September, sunrise is at 06:12 and sunset at 18:18 WIB.
Sunshine
In September, the average sunshine is 8.3h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 6 suggests these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. 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
Sibuluan, Indonesia
- Average high temperature in September: 28°C
The warmest month (with the highest average high temperature) is May (28.9°C).
The month with the lowest average high temperature is November (27.3°C).
- Average low temperature in September: 21.5°C
The month with the highest average low temperature is May (22.5°C).
The coldest months (with the lowest average low temperature) are July and September (21.5°C).
Average pressure in September
Sibuluan, Indonesia
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is September (1011mbar).
The month with the lowest atmospheric pressure is May (1009.9mbar).
Average wind speed in September
Sibuluan, Indonesia
- Average wind speed in September: 5.3km/h
The windiest month (with the highest average wind speed) is June (5.6km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in September
Sibuluan, Indonesia
- Average humidity in September: 80%
The month with the highest relative humidity is November (84%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in September
Sibuluan, Indonesia
- Average rainfall in September: 118mm
The wettest month (with the highest rainfall) is November (259mm).
The driest month (with the least rainfall) is June (82mm).
Average rainfall days in September
Sibuluan, Indonesia
- Average rainfall days in September: 22.5 days
The months with the highest number of rainy days are March and November (27.2 days).
The month with the least rainy days is June (17.2 days).
Average daylight in September /
Average sunshine in September
Sibuluan, 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: 8h and 18min
The month with the most sunshine is June (Average sunshine: 9h and 0min).
The month with the least sunshine is November (Average sunshine: 7h and 0min).
Average sunshine days in September
Sibuluan, Indonesia
- Average sunshine days in September: 5.1 days
The month with the most sunshine days is June (11.4 days).
The month with the least sunshine days is November (1.8 days).
Average UV index in September
Sibuluan, Indonesia
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Sibuluan, Indonesia
- Average cloud cover in September: 41
The month with the most cloud cover is November (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 33).
Average visibility in September
Sibuluan, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, October, November and December (9km).





