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
Weather in September
Temperature
September's presence marks an average high-temperature of a still moderately hot 28.6°C (83.5°F), subtly varied from August's 29.2°C (84.6°F). Sawahlunto's nights in September cool down to an average low-temperature of 19.3°C (66.7°F).Heat index
The heat index value during September is calculated to be a tropical 34°C (93.2°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for 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 September, the average relative humidity is 83%.Rainfall
In September, the rain falls for 28 days. Throughout September, 186mm (7.32") of precipitation is accumulated. Throughout the year, there are 329.4 rainfall days, and 2401mm (94.53") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 7min.On the first day of September in Sawahlunto, sunrise is at 06:13 and sunset at 18:20. On the last day of the month, sunrise is at 06:03 and sunset at 18:10 WIB.
Sunshine
In Sawahlunto, the average sunshine in September is 7.9h.UV index
January, March through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
Is it hot in Sawahlunto during September?
What is the average humidity in September in Sawahlunto?
How much does it rain in Sawahlunto in September?
What is the average length of the day in September in Sawahlunto?
When is the sunrise / sunset in September in Sawahlunto?
How many hours of sunshine does Sawahlunto have in September?
What are the months with the highest UV index in Sawahlunto?
What is the UV index intensity in September in Sawahlunto?
Average temperature in September
Sawahlunto, Indonesia
- Average high temperature in September: 28.6°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The months with the lowest average high temperature are January, November and December (27.5°C).
- Average low temperature in September: 19.3°C
The month with the highest average low temperature is November (20.1°C).
The coldest month (with the lowest average low temperature) is July (18.8°C).
Average pressure in September
Sawahlunto, Indonesia
- Average pressure in September: 1010.7mbar
The month with the highest atmospheric pressure is January (1010.8mbar).
The month with the lowest atmospheric pressure is May (1009.7mbar).
Average wind speed in September
Sawahlunto, Indonesia
- Average wind speed in September: 3.7km/h
The windiest month (with the highest average wind speed) is December (4.1km/h).
The calmest months (with the lowest average wind speed) are February and May (3.6km/h).
Average humidity in September
Sawahlunto, Indonesia
- Average humidity in September: 83%
The months with the highest relative humidity are February, April, November and December (86%).
The months with the lowest relative humidity are August and October (82%).
Average rainfall in September
Sawahlunto, Indonesia
- Average rainfall in September: 186mm
The wettest months (with the highest rainfall) are April and November (273mm).
The driest months (with the least rainfall) are June and August (140mm).
Average rainfall days in September
Sawahlunto, Indonesia
- Average rainfall days in September: 28 days
The month with the highest number of rainy days is November (28.9 days).
The month with the least rainy days is June (24.8 days).
Average daylight in September /
Average sunshine in September
Sawahlunto, Indonesia
- Average daylight in September: 12h and 1min
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 5min
The month with the most sunshine is October (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Sawahlunto, Indonesia
- Average sunshine days in September: 1.2 days
The month with the most sunshine days is June (4.2 days).
The month with the least sunshine days is November (0.8 days).
Average UV index in September
Sawahlunto, Indonesia
- Average UV index in September: 6
The months with the highest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 6).
The month with the lowest UV index is February (UV index 5).
Average cloud cover in September
Sawahlunto, Indonesia
- Average cloud cover in September: 45
The month with the most cloud cover is November (Cloud cover 59).
The months with the least cloud cover are June and August (Cloud cover 42).
Average visibility in September
Sawahlunto, Indonesia
- Average visibility in September: 8km
The months with the highest visibility are January, March, June, August, September and October (8km).
The months with the lowest visibility are February, April, May, July, November and December (7km).
Sawahlunto, Indonesia
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