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
With the onset of September, Rivonia experiences a subtle temperature shift, with the average high-temperature moving from an agreeable 21.3°C (70.3°F) in August to a warm 25.5°C (77.9°F). In Rivonia, a significant divergence from daytime highs is recorded, with average lows of 11.8°C (53.2°F) during September nights.Humidity
With an average relative humidity of 34%, September is the least humid month.Rainfall
In Rivonia, in September, it is raining for 2.6 days, with typically 6mm (0.24") of accumulated precipitation. In Rivonia, during the entire year, the rain falls for 77.6 days and collects up to 262mm (10.31") of precipitation.Daylight
In Rivonia, the average length of the day in September is 11h and 57min.On the first day of the month, sunrise is at 06:19 and sunset at 17:55. On the last day of September, sunrise is at 05:47 and sunset at 18:07 SAST.
Sunshine
In Rivonia, the average sunshine in September is 9.6h.UV index
In Rivonia, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 5 in September suggests the following recommendations:
Take precautions - Protection against sun damage is advised. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Rivonia?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September in Rivonia?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Rivonia have in September?
What is the UV index intensity in September?
Average temperature in September
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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
Rivonia, 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).
