September weather forecast
Jansenville, South Africa

September

Weather in September

The first month of the spring, September, is a moderately hot month in Jansenville, South Africa, with temperature in the range of an average low of 11.3°C (52.3°F) and an average high of 23.2°C (73.8°F).

Temperature

Jansenville's weather in September indicates an average high-temperature of a moderately hot 23.2°C (73.8°F), nearly consistent with the 20.6°C (69.1°F) of August. Jansenville, during the nights of September, experiences an average temperature drop to a cool 11.3°C (52.3°F).

Humidity

In September, the average relative humidity is 52%.

Rainfall

In Jansenville, South Africa, in September, it is raining for 5.9 days, with typically 11mm (0.43") of accumulated precipitation. In Jansenville, during the entire year, the rain falls for 88.8 days and collects up to 181mm (7.13") of precipitation.

Daylight

In September, the average length of the day is 11h and 54min.
On the first day of the month, sunrise is at 06:38 and sunset at 18:04. On the last day of September, sunrise is at 05:59 and sunset at 18:23 SAST.

Sunshine

In Jansenville, the average sunshine in September is 9.2h.

UV index

In Jansenville, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

What is the usual temperature for Jansenville in September?
During September, Jansenville experiences an average high-temperature of 23.2°C (73.8°F) and a low-temperature of 11.3°C (52.3°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in March is calculated to be 30°C (86°F).
What is the average humidity in September?
In September, the average relative humidity is 52%.
How much does it rain in Jansenville in September?
In Jansenville, during September, the rain falls for 5.9 days and regularly aggregates up to 11mm (0.43") of precipitation.
How many hours of daylight does Jansenville have in September?
In September, the average day length is 11h and 54min.
When are sunrise and sunset in September in Jansenville?
On the first day of September, sunrise is at 06:38 and sunset at 18:04. On the last day of the month, sunrise is at 05:59 and sunset at 18:23 SAST.
How many hours of sunshine does Jansenville have in September?
The average sunshine duration in September is 9.2h.
How high is the UV index in September?
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Jansenville, South Africa
Average temperature in September
Jansenville, South Africa
  • Average high temperature in September: 23.2°C

The warmest month (with the highest average high temperature) is January (30.5°C).
The month with the lowest average high temperature is June (19.1°C).

  • Average low temperature in September: 11.3°C

The month with the highest average low temperature is February (18°C).
The coldest month (with the lowest average low temperature) is July (8.5°C).

Average pressure in September - Jansenville, South Africa
Average pressure in September
Jansenville, South Africa
  • Average pressure in September: 1018.6mbar

The month with the highest atmospheric pressure is July (1022.9mbar).
The month with the lowest atmospheric pressure is January (1013.1mbar).

Average wind speed in September - Jansenville, South Africa
Average wind speed in September
Jansenville, South Africa
  • Average wind speed in September: 12.7km/h

The windiest month (with the highest average wind speed) is December (14.7km/h).
The calmest months (with the lowest average wind speed) are April and May (11km/h).

Average humidity in September - Jansenville, South Africa
Average humidity in September
Jansenville, South Africa
  • Average humidity in September: 52%

The months with the highest relative humidity are January, February, March and December (58%).
The month with the lowest relative humidity is August (49%).

Average rainfall in September - Jansenville, South Africa
Average rainfall in September
Jansenville, South Africa
  • Average rainfall in September: 11mm

The wettest months (with the highest rainfall) are January and February (28mm).
The driest month (with the least rainfall) is August (5mm).

Average rainfall days in September - Jansenville, South Africa
Average rainfall days in September
Jansenville, South Africa
  • Average rainfall days in September: 5.9 days

The month with the highest number of rainy days is January (10.3 days).
The month with the least rainy days is August (3.6 days).

Average daylight in September / Average sunshine in September - Jansenville, South Africa
Average daylight in September /
Average sunshine in September
Jansenville, South Africa
  • Average daylight in September: 11h and 5min

The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is November (Average sunshine: 11h and 0min).
The months with the least sunshine are May, June and July (Average sunshine: 7h and 12min).

Average sunshine days in September - Jansenville, South Africa
Average sunshine days in September
Jansenville, South Africa
  • Average sunshine days in September: 21.1 days

The month with the most sunshine days is July (26 days).
The month with the least sunshine days is February (12.6 days).

Average UV index in September - Jansenville, South Africa
Average UV index in September
Jansenville, South Africa
  • Average UV index in September: 5

The months with the highest UV index are January, February, 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 - Jansenville, South Africa
Average cloud cover in September
Jansenville, South Africa
  • Average cloud cover in September: 22

The month with the most cloud cover is December (Cloud cover 29).
The month with the least cloud cover is July (Cloud cover 16).

Average visibility in September - Jansenville, South Africa
Average visibility in September
Jansenville, South Africa
  • 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).

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