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
The beginning of September signals a minor rise in the average high-temperature, moving from an agreeable 20.8°C (69.4°F) in August to a warm 25.1°C (77.2°F). September in Grootvlei witnesses a substantial contrast between the daytime highs and the average low of 11.2°C (52.2°F).Humidity
The least humid month in Grootvlei is September, with an average relative humidity of 35%.Rainfall
In Grootvlei, in September, it is raining for 4 days, with typically 10mm (0.39") of accumulated precipitation. In Grootvlei, during the entire year, the rain falls for 120.9 days and collects up to 449mm (17.68") of precipitation.Daylight
In September, the average length of the day in Grootvlei is 11h and 56min.On the first day of the month, sunrise is at 06:18 and sunset at 17:53. On the last day of September, sunrise is at 05:45 and sunset at 18:05 SAST.
Sunshine
In September, the average sunshine in Grootvlei is 9.3h.UV index
In September, the average daily maximum UV index in Grootvlei is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What are the temperatures in Grootvlei in September?
What is the least humid month in Grootvlei?
What is the average humidity in September in Grootvlei?
How many days does it rain in September in Grootvlei?
How many hours of daylight does Grootvlei have in September?
When are sunrise and sunset in September in Grootvlei?
How many hours of sunshine does Grootvlei have in September?
What is the UV index reading in September in Grootvlei?
Average temperature in September
Grootvlei, South Africa
- Average high temperature in September: 25.1°C
The warmest month (with the highest average high temperature) is January (26.6°C).
The month with the lowest average high temperature is July (17.3°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is December (15.5°C).
The coldest month (with the lowest average low temperature) is July (5.2°C).
Average pressure in September
Grootvlei, South Africa
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is July (1024.8mbar).
The month with the lowest atmospheric pressure is January (1013.6mbar).
Average wind speed in September
Grootvlei, South Africa
- Average wind speed in September: 12.1km/h
The windiest months (with the highest average wind speed) are September and October (12.1km/h).
The calmest months (with the lowest average wind speed) are March and May (8.3km/h).
Average humidity in September
Grootvlei, South Africa
- Average humidity in September: 35%
The months with the highest relative humidity are January and February (68%).
The month with the lowest relative humidity is September (35%).
Average rainfall in September
Grootvlei, South Africa
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is December (93mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in September
Grootvlei, South Africa
- Average rainfall days in September: 4 days
The month with the highest number of rainy days is January (20.4 days).
The month with the least rainy days is June (1.5 days).
Average daylight in September /
Average sunshine in September
Grootvlei, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).
- Average sunshine in September: 9h and 2min
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
Grootvlei, South Africa
- Average sunshine days in September: 25.2 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is January (7.8 days).
Average UV index in September
Grootvlei, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, 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
Grootvlei, South Africa
- Average cloud cover in September: 10
The month with the most cloud cover is January (Cloud cover 30).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in September
Grootvlei, South Africa
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March and December (9km).
Grootvlei, South Africa
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