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 arrival signals a modest temperature shift, moving from an agreeable 22.3°C (72.1°F) in August to a moderately hot 26.6°C (79.9°F). Tweefontein observes a dramatic plunge from daytime highs in September, settling at an average low-temperature of 12.7°C (54.9°F).Humidity
The least humid month in Tweefontein is September, with an average relative humidity of 36%.Rainfall
In Tweefontein, during September, the rain falls for 3.6 days and regularly aggregates up to 9mm (0.35") of precipitation. In Tweefontein, South Africa, during the entire year, the rain falls for 123.3 days and collects up to 430mm (16.93") of precipitation.Daylight
In September, the average length of the day is 11h and 57min.On the first day of the month, sunrise is at 06:16 and sunset at 17:53. On the last day of September, in Tweefontein, sunrise is at 05:44 and sunset at 18:04 SAST.
Sunshine
In Tweefontein, South Africa, the average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index in Tweefontein is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 5 during September leads to these advisories:
Ensure safety - Sun damage prevention is strongly urged. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the temperature in September in Tweefontein?
What is the least humid month in Tweefontein?
What is the average humidity in September in Tweefontein?
How much does it rain in Tweefontein in September?
What is the average length of the day in September in Tweefontein?
When are sunrise and sunset in September in Tweefontein?
How long on average sun shines in September in Tweefontein?
What is the UV index intensity in September in Tweefontein?
Average temperature in September
Tweefontein, South Africa
- Average high temperature in September: 26.6°C
The warmest month (with the highest average high temperature) is January (28.3°C).
The months with the lowest average high temperature are June and July (18.8°C).
- Average low temperature in September: 12.7°C
The months with the highest average low temperature are January and December (17.1°C).
The coldest month (with the lowest average low temperature) is July (6.7°C).
Average pressure in September
Tweefontein, South Africa
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is January (1013.2mbar).
Average wind speed in September
Tweefontein, South Africa
- Average wind speed in September: 10.9km/h
The windiest months (with the highest average wind speed) are October and November (11.5km/h).
The calmest month (with the lowest average wind speed) is May (7.7km/h).
Average humidity in September
Tweefontein, South Africa
- Average humidity in September: 36%
The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is September (36%).
Average rainfall in September
Tweefontein, South Africa
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is January (92mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in September
Tweefontein, South Africa
- Average rainfall days in September: 3.6 days
The month with the highest number of rainy days is January (21.8 days).
The month with the least rainy days is July (0.8 days).
Average daylight in September /
Average sunshine in September
Tweefontein, South Africa
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is October (Average sunshine: 11h and 48min).
The months with the least sunshine are April and August (Average sunshine: 7h and 30min).
Average sunshine days in September
Tweefontein, South Africa
- Average sunshine days in September: 25.3 days
The month with the most sunshine days is July (29.8 days).
The months with the least sunshine days are January and December (6.5 days).
Average UV index in September
Tweefontein, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, February, March, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in September
Tweefontein, South Africa
- Average cloud cover in September: 9
The month with the most cloud cover is January (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Tweefontein, South Africa
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Tweefontein, South Africa
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