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
In Sandton, the average high-temperature in September slightly rises, from a pleasant 21.3°C (70.3°F) in August, to a warm 25.5°C (77.9°F). Sandton observes a substantial disparity between daytime high and the average low-temperature of 11.8°C (53.2°F) during September nights.Humidity
The least humid month is September, with an average relative humidity of 34%.Rainfall
In Sandton, South Africa, during September, the rain falls for 2.6 days and regularly aggregates up to 6mm (0.24") of precipitation. Throughout the year, there are 77.6 rainfall days, and 262mm (10.31") of precipitation is accumulated.Daylight
In Sandton, the average length of the day in September is 11h and 57min.On the first day of September, sunrise is at 06:19 and sunset at 17:55. On the last day of the month, sunrise is at 05:47 and sunset at 18:07 SAST.
Sunshine
In Sandton, the average sunshine in September is 9.6h.UV index
In Sandton, South Africa, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 5 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What is the temperature in September in Sandton?
What is the least humid month in Sandton?
What is the average humidity in September in Sandton?
How much does it rain in Sandton in September?
How many hours of daylight does Sandton have in September?
When are sunrise and sunset in September in Sandton?
How long on average sun shines in September in Sandton?
What is the UV index reading in September in Sandton?
Average temperature in September
Sandton, South Africa
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is December (27.5°C).
The month with the lowest average high temperature is July (17.9°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is January (16.6°C).
The coldest month (with the lowest average low temperature) is July (6.1°C).
Average pressure in September
Sandton, South Africa
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is January (1013.1mbar).
Average wind speed in September
Sandton, South Africa
- Average wind speed in September: 11.3km/h
The windiest month (with the highest average wind speed) is November (11.6km/h).
The calmest month (with the lowest average wind speed) is May (7.8km/h).
Average humidity in September
Sandton, South Africa
- Average humidity in September: 34%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is September (34%).
Average rainfall in September
Sandton, South Africa
- Average rainfall in September: 6mm
The wettest month (with the highest rainfall) is January (57mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in September
Sandton, South Africa
- Average rainfall days in September: 2.6 days
The month with the highest number of rainy days is January (13.2 days).
The month with the least rainy days is July (1.4 days).
Average daylight in September /
Average sunshine in September
Sandton, South Africa
- Average daylight in September: 11h and 5min
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 30min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is October (Average sunshine: 11h and 48min).
The month with the least sunshine is August (Average sunshine: 7h and 24min).
Average sunshine days in September
Sandton, South Africa
- Average sunshine days in September: 26.5 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is January (16.3 days).
Average UV index in September
Sandton, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, February, October and November (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in September
Sandton, South Africa
- Average cloud cover in September: 9
The month with the most cloud cover is January (Cloud cover 26).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Sandton, 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).
Sandton, South Africa
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