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
Shifting into September, Grabouw records an average high-temperature of an enjoyable 17°C (62.6°F), presenting minor fluctuations compared to the previous month. September in Grabouw sees the temperature falling to a mean low of 10.1°C (50.2°F).Humidity
With an average relative humidity of 77%, September is the most humid month.Rainfall
In September, the rain falls for 13 days. Throughout September, 41mm (1.61") of precipitation is accumulated. In Grabouw, during the entire year, the rain falls for 125.4 days and collects up to 489mm (19.25") of precipitation.Daylight
In September, the average length of the day is 11h and 53min.On the first day of September in Grabouw, South Africa, sunrise is at 07:01 and sunset at 18:26. On the last day of the month, sunrise is at 06:21 and sunset at 18:46 SAST.
Sunshine
In Grabouw, the average sunshine in September is 8h.UV index
The months with the lowest UV index in Grabouw are May through October, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Ensure safety - Sun damage prevention is strongly urged. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the average September temperature in Grabouw?
What is the most humid month in Grabouw?
What is the average humidity in September in Grabouw?
How many days does it rain in September in Grabouw?
What is the average length of the day in September in Grabouw?
What time are sunrise and sunset in September in Grabouw?
How many hours of sunshine does Grabouw have in September?
When is the lowest UV index in Grabouw?
What is the UV index reading in September in Grabouw?
Average temperature in September
Grabouw, South Africa
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is February (25.4°C).
The month with the lowest average high temperature is August (15.8°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is January (16.7°C).
The coldest month (with the lowest average low temperature) is August (9.3°C).
Average pressure in September
Grabouw, South Africa
- Average pressure in September: 1019.6mbar
The month with the highest atmospheric pressure is July (1022mbar).
The month with the lowest atmospheric pressure is February (1013.5mbar).
Average wind speed in September
Grabouw, South Africa
- Average wind speed in September: 15.4km/h
The windiest month (with the highest average wind speed) is November (17km/h).
The calmest month (with the lowest average wind speed) is May (13.8km/h).
Average humidity in September
Grabouw, South Africa
- Average humidity in September: 77%
The month with the highest relative humidity is September (77%).
The months with the lowest relative humidity are January, February, April and December (71%).
Average rainfall in September
Grabouw, South Africa
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is June (105mm).
The driest month (with the least rainfall) is February (10mm).
Average rainfall days in September
Grabouw, South Africa
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is August (14.6 days).
The month with the least rainy days is February (6.4 days).
Average daylight in September /
Average sunshine in September
Grabouw, 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: 8h and 0min
The month with the most sunshine is December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in September
Grabouw, South Africa
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is December (20.2 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in September
Grabouw, 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 May, June, July, August, September and October (UV index 4).
Average cloud cover in September
Grabouw, South Africa
- Average cloud cover in September: 34
The months with the most cloud cover are June and September (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 17).
Average visibility in September
Grabouw, 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).
Grabouw, South Africa
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