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
September
Weather in September
Temperature
Transitioning into September, Semampir records an average high-temperature of a still warm 28.3°C (82.9°F), almost identical to August's 27.2°C (81°F). In Semampir, an average low-temperature of 20.5°C (68.9°F) is recorded during September nights.Heat index
In September, the heat index is appraised at a tropical 33°C (91.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. 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 of high significance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity is 81%.Rainfall
In September, the rain falls for 13.4 days. Throughout September, 27mm (1.06") of precipitation is accumulated. Throughout the year, there are 274.5 rainfall days, and 1388mm (54.65") 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 05:29 and sunset at 17:28. On the last day of the month, sunrise is at 05:13 and sunset at 17:23 WIB.
Sunshine
The average sunshine in September is 9.2h.UV index
January, March, May through September and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the lowest UV index?
How high is the UV index in September?
Average temperature in September
Semampir, Indonesia
- Average high temperature in September: 28.3°C
The warmest months (with the highest average high temperature) are October and November (29.3°C).
The month with the lowest average high temperature is July (27°C).
- Average low temperature in September: 20.5°C
The months with the highest average low temperature are January and December (23°C).
The coldest month (with the lowest average low temperature) is September (20.5°C).
Average pressure in September
Semampir, Indonesia
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is August (1012mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).
Average wind speed in September
Semampir, Indonesia
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is August (7.1km/h).
The calmest months (with the lowest average wind speed) are March and April (4.8km/h).
Average humidity in September
Semampir, Indonesia
- Average humidity in September: 81%
The months with the highest relative humidity are March, April, May, June and July (84%).
The month with the lowest relative humidity is October (79%).
Average rainfall in September
Semampir, Indonesia
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is January (232mm).
The driest month (with the least rainfall) is August (12mm).
Average rainfall days in September
Semampir, Indonesia
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is January (30.9 days).
The month with the least rainy days is August (11 days).
Average daylight in September /
Average sunshine in September
Semampir, Indonesia
- Average daylight in September: 12h and 1min
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 42min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is October (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 7h and 36min).
Average sunshine days in September
Semampir, Indonesia
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is August (16.6 days).
The month with the least sunshine days is January (0 days).
Average UV index in September
Semampir, Indonesia
- Average UV index in September: 6
The months with the highest UV index are February, April, October and November (UV index 7).
The months with the lowest UV index are January, March, May, June, July, August, September and December (UV index 6).
Average cloud cover in September
Semampir, Indonesia
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in September
Semampir, Indonesia
- Average visibility in September: 9km
The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January, February, March, April, May, July, September, October, November and December (9km).
