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
Chartwell experiences a minor temperature shift with the start of September, with average high-temperatures moving from a pleasant 21.4°C (70.5°F) in August to a moderately hot 25.8°C (78.4°F). Chartwell encounters a significant temperature differential, with an average low-temperature of 11.9°C (53.4°F) during September nights.Humidity
With an average relative humidity of 35%, September is the least humid month in Chartwell.Rainfall
In September, the rain falls for 2.8 days. Throughout September, 5mm (0.2") of precipitation is accumulated. Throughout the year, in Chartwell, there are 109.7 rainfall days, and 385mm (15.16") of precipitation is accumulated.Daylight
In September, the average length of the day is 11h and 57min.On the first day of September in Chartwell, sunrise is at 06:19 and sunset at 17:56. On the last day of the month, sunrise is at 05:48 and sunset at 18:07 SAST.
Sunshine
The average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September in Chartwell is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What is the usual temperature for Chartwell in September?
What is the least humid month in Chartwell?
What is the average humidity in September in Chartwell?
How much does it rain in Chartwell in September?
How many hours of daylight does Chartwell have in September?
When is the sunrise / sunset in September in Chartwell?
How long on average sun shines in September in Chartwell?
How high is the UV index in September in Chartwell?
Average temperature in September
Chartwell, South Africa
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is January (27.8°C).
The month with the lowest average high temperature is July (18.2°C).
- Average low temperature in September: 11.9°C
The month with the highest average low temperature is January (17°C).
The coldest months (with the lowest average low temperature) are June and July (6.4°C).
Average pressure in September
Chartwell, South Africa
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in September
Chartwell, South Africa
- Average wind speed in September: 10.8km/h
The windiest months (with the highest average wind speed) are October and November (11.2km/h).
The calmest month (with the lowest average wind speed) is May (7.5km/h).
Average humidity in September
Chartwell, South Africa
- Average humidity in September: 35%
The month with the highest relative humidity is January (64%).
The month with the lowest relative humidity is September (35%).
Average rainfall in September
Chartwell, South Africa
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is January (82mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in September
Chartwell, South Africa
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is January (19.2 days).
The month with the least rainy days is July (0.7 days).
Average daylight in September /
Average sunshine in September
Chartwell, 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 30min).
Average sunshine days in September
Chartwell, South Africa
- Average sunshine days in September: 26.5 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is January (9.5 days).
Average UV index in September
Chartwell, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, February, March, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in September
Chartwell, South Africa
- Average cloud cover in September: 8
The month with the most cloud cover is January (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Chartwell, 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).
Chartwell, South Africa
Weather forecast for your location
2. Allow the app to use your location
