September weather forecastOnyam, Indonesia
September
Weather in September
September, the first month of the spring in Onyam, is also a moderately hot month, with temperature in the range of an average low of 21.9°C (71.4°F) and an average high of 27.3°C (81.1°F).Temperature
September's climate shows a minor adjustment in average high-temperatures to a still moderately hot 27.3°C (81.1°F) from August's 26.9°C (80.4°F). In September, Onyam encounters an average low-temperature of 21.9°C (71.4°F) during the night.Heat index
September's mean heat index is appraised at a hot 30°C (86°F). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In Onyam, the average relative humidity in September is 80%.Rainfall
In Onyam, in September, it is raining for 16.8 days, with typically 34mm (1.34") of accumulated precipitation. Throughout the year, there are 244.7 rainfall days, and 1048mm (41.26") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 4min.On the first day of September, sunrise is at 05:54 and sunset at 17:54. On the last day of the month, sunrise is at 05:39 and sunset at 17:49 WIB.
Sunshine
In Onyam, the average sunshine in September is 9h.UV index
May 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 exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Onyam, Indonesia
- Average high temperature in September: 27.3°C
The warmest month (with the highest average high temperature) is March (28.5°C).
The months with the lowest average high temperature are July and August (26.9°C).
- Average low temperature in September: 21.9°C
The months with the highest average low temperature are January and December (23.9°C).
The coldest month (with the lowest average low temperature) is August (21.6°C).
Average pressure in September
Onyam, Indonesia
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is September (1011.8mbar).
The month with the lowest atmospheric pressure is December (1009.4mbar).
Average wind speed in September
Onyam, Indonesia
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is August (15.6km/h).
The calmest month (with the lowest average wind speed) is April (8.9km/h).
Average humidity in September
Onyam, Indonesia
- Average humidity in September: 80%
The months with the highest relative humidity are May, June, July and November (82%).
The month with the lowest relative humidity is January (78%).
Average rainfall in September
Onyam, Indonesia
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is May (140mm).
The driest month (with the least rainfall) is August (25mm).
Average rainfall days in September
Onyam, Indonesia
- Average rainfall days in September: 16.8 days
The month with the highest number of rainy days is November (23.6 days).
The month with the least rainy days is August (13.9 days).
Average daylight in September /
Average sunshine in September
Onyam, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is February (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 6h and 48min).
Average sunshine days in September
Onyam, Indonesia
- Average sunshine days in September: 6.6 days
The months with the most sunshine days are January and August (7.6 days).
The month with the least sunshine days is May (4.4 days).
Average UV index in September
Onyam, Indonesia
- Average UV index in September: 6
The months with the highest UV index are January, February, March and April (UV index 7).
The months with the lowest UV index are May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Onyam, Indonesia
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Onyam, 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).
