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 September, the average high-temperature in Stellenbosch registers at a still comfortable 17.8°C (64°F), nearly identical to August's 16.3°C (61.3°F). During the nights in September, Stellenbosch experiences a consistent average temperature of 8.8°C (47.8°F).Humidity
The months with the highest humidity in Stellenbosch are August and September, with an average relative humidity of 77%.Rainfall
In Stellenbosch, during September, the rain falls for 11.5 days and regularly aggregates up to 38mm (1.5") of precipitation. In Stellenbosch, South Africa, during the entire year, the rain falls for 109.6 days and collects up to 458mm (18.03") of precipitation.Daylight
In September, the average length of the day is 11h and 53min.On the first day of the month, sunrise is at 07:02 and sunset at 18:26. On the last day of September, in Stellenbosch, sunrise is at 06:21 and sunset at 18:46 SAST.
Sunshine
In September, the average sunshine is 7.9h.UV index
April through September, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Be vigilant - Preventing sunburn is recommended. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What is the average September temperature in Stellenbosch?
What is the most humid month in Stellenbosch?
What is the average humidity in September in Stellenbosch?
How much does it rain in Stellenbosch in September?
How many hours of daylight does Stellenbosch have in September?
What time are sunrise and sunset in September in Stellenbosch?
How long on average sun shines in September in Stellenbosch?
What is the month with the lowest UV index in Stellenbosch?
What is the UV index intensity in September in Stellenbosch?
Average temperature in September
Stellenbosch, South Africa
- Average high temperature in September: 17.8°C
The warmest month (with the highest average high temperature) is February (27.3°C).
The months with the lowest average high temperature are June and July (16.2°C).
- Average low temperature in September: 8.8°C
The months with the highest average low temperature are January and February (15.8°C).
The coldest month (with the lowest average low temperature) is August (7.6°C).
Average pressure in September
Stellenbosch, South Africa
- Average pressure in September: 1019.6mbar
The month with the highest atmospheric pressure is July (1022.1mbar).
The month with the lowest atmospheric pressure is February (1013.4mbar).
Average wind speed in September
Stellenbosch, South Africa
- Average wind speed in September: 12.1km/h
The windiest months (with the highest average wind speed) are January and November (13.5km/h).
The calmest month (with the lowest average wind speed) is May (11.1km/h).
Average humidity in September
Stellenbosch, South Africa
- Average humidity in September: 77%
The months with the highest relative humidity are August and September (77%).
The month with the lowest relative humidity is February (66%).
Average rainfall in September
Stellenbosch, South Africa
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is June (103mm).
The driest month (with the least rainfall) is February (8mm).
Average rainfall days in September
Stellenbosch, South Africa
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is August (13.5 days).
The month with the least rainy days is February (4.5 days).
Average daylight in September /
Average sunshine in September
Stellenbosch, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).
Average sunshine days in September
Stellenbosch, South Africa
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is March (23.1 days).
The month with the least sunshine days is June (14.5 days).
Average UV index in September
Stellenbosch, South Africa
- Average UV index in September: 4
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August and September (UV index 4).
Average cloud cover in September
Stellenbosch, South Africa
- Average cloud cover in September: 34
The month with the most cloud cover is June (Cloud cover 35).
The month with the least cloud cover is February (Cloud cover 15).
Average visibility in September
Stellenbosch, South Africa
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, June, October, November and December (10km).
The months with the lowest visibility are May, July, August and September (9km).
Stellenbosch, South Africa
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