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
Robertson, South Africa, measures an average high-temperature of a still refreshing 17.7°C (63.9°F) in September, nearly consistent with the preceding month. September witnesses an average nighttime temperature of 6.3°C (43.3°F) in Robertson.Humidity
The average relative humidity in September is 71%.Rainfall
In September, the rain falls for 8.7 days. Throughout September, 22mm (0.87") of precipitation is accumulated. Throughout the year, there are 101.2 rainfall days, and 310mm (12.2") of precipitation is accumulated.Daylight
In Robertson, the average length of the day in September is 11h and 53min.On the first day of September in Robertson, South Africa, sunrise is at 06:57 and sunset at 18:22. On the last day of the month, sunrise is at 06:17 and sunset at 18:42 SAST.
Sunshine
In Robertson, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Robertson is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are September temperatures in Robertson?
What is the average humidity in September in Robertson?
How much does it rain in Robertson in September?
What is the average length of the day in September in Robertson?
What time are sunrise and sunset in September in Robertson?
How many hours of sunshine does Robertson have in September?
What is the UV index intensity in September in Robertson?
Average temperature in September
Robertson, South Africa
- Average high temperature in September: 17.7°C
The warmest month (with the highest average high temperature) is February (28.3°C).
The month with the lowest average high temperature is June (15.1°C).
- Average low temperature in September: 6.3°C
The month with the highest average low temperature is February (14.9°C).
The coldest month (with the lowest average low temperature) is August (5.1°C).
Average pressure in September
Robertson, South Africa
- Average pressure in September: 1019.4mbar
The month with the highest atmospheric pressure is July (1022.2mbar).
The month with the lowest atmospheric pressure is February (1013.1mbar).
Average wind speed in September
Robertson, South Africa
- Average wind speed in September: 10km/h
The windiest month (with the highest average wind speed) is November (10.8km/h).
The calmest month (with the lowest average wind speed) is April (9.3km/h).
Average humidity in September
Robertson, South Africa
- Average humidity in September: 71%
The month with the highest relative humidity is August (72%).
The month with the lowest relative humidity is February (59%).
Average rainfall in September
Robertson, South Africa
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is June (66mm).
The driest month (with the least rainfall) is February (8mm).
Average rainfall days in September
Robertson, South Africa
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is June (11.7 days).
The month with the least rainy days is February (5.5 days).
Average daylight in September /
Average sunshine in September
Robertson, 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 2min
The month with the most sunshine is December (Average sunshine: 11h and 30min).
The month with the least sunshine is June (Average sunshine: 6h and 6min).
Average sunshine days in September
Robertson, South Africa
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is March (21.6 days).
The month with the least sunshine days is June (15.7 days).
Average UV index in September
Robertson, 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 June and July (UV index 3).
Average cloud cover in September
Robertson, South Africa
- Average cloud cover in September: 31
The month with the most cloud cover is June (Cloud cover 33).
The month with the least cloud cover is February (Cloud cover 17).
Average visibility in September
Robertson, South Africa
- Average visibility in September: 9km
The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are April, May, June, July, August, September, October and November (9km).
Robertson, South Africa
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