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 snowfall in September
- Average snowfall 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
September
Weather in September
Temperature
King William's Town's weather in September displays an average high-temperature of an agreeable 21.6°C (70.9°F), showing minor disparity from August's 19.7°C (67.5°F). King William's Town documents a marked decrease from day to night, with an average low of 9.2°C (48.6°F) throughout September.Humidity
In King William's Town, the average relative humidity in September is 63%.Rainfall
In King William's Town, during September, the rain falls for 12.3 days and regularly aggregates up to 23mm (0.91") of precipitation. In King William's Town, during the entire year, the rain falls for 167.7 days and collects up to 520mm (20.47") of precipitation.Snowfall
January through June, August through December are months without snowfall in King William's Town.Daylight
In King William's Town, South Africa, the average length of the day in September is 11h and 54min.On the first day of September, sunrise is at 06:27 and sunset at 17:53. On the last day of the month, sunrise is at 05:48 and sunset at 18:12 SAST.
Sunshine
The average sunshine in September in King William's Town is 7.7h.UV index
The months with the lowest UV index in King William's Town, South Africa, are March through July, September and October, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in King William's Town?
What is the average humidity in September in King William's Town?
How much does it rain in King William's Town in September?
When it does not snow in King William's Town?
How many hours of daylight does King William's Town have in September?
When are sunrise and sunset in September in King William's Town?
How long on average sun shines in September in King William's Town?
What are the months with the lowest UV index in King William's Town?
What is the UV index reading in September in King William's Town?
Average temperature in September
King William's Town, South Africa
- Average high temperature in September: 21.6°C
The warmest month (with the highest average high temperature) is January (25.3°C).
The month with the lowest average high temperature is July (17.9°C).
- Average low temperature in September: 9.2°C
The month with the highest average low temperature is February (14.5°C).
The coldest month (with the lowest average low temperature) is July (7°C).
Average pressure in September
King William's Town, South Africa
- Average pressure in September: 1018.8mbar
The month with the highest atmospheric pressure is July (1023.1mbar).
The month with the lowest atmospheric pressure is January (1013.8mbar).
Average wind speed in September
King William's Town, South Africa
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is June (14km/h).
The calmest month (with the lowest average wind speed) is March (9.2km/h).
Average humidity in September
King William's Town, South Africa
- Average humidity in September: 63%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (55%).
Average rainfall in September
King William's Town, South Africa
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is February (82mm).
The driest month (with the least rainfall) is June (12mm).
Average rainfall days in September
King William's Town, South Africa
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is January (20.7 days).
The month with the least rainy days is June (6.1 days).
Average snowfall in September
King William's Town, South Africa
- Average snowfall in September: 0mm
The month with the highest snowfall is July (1mm).
The months with the least snowfall are January, February, March, April, May, June, August, September, October, November and December (0mm).
Average snowfall days in September
King William's Town, South Africa
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are July and August (0.2 days).
The months with the least snowfall days are January, February, March, April, May, June, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
King William's Town, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is October (Average sunshine: 8h and 6min).
The month with the least sunshine is April (Average sunshine: 6h and 18min).
Average sunshine days in September
King William's Town, South Africa
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is June (22.1 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in September
King William's Town, South Africa
- Average UV index in September: 4
The months with the highest UV index are January, February, August, November and December (UV index 5).
The months with the lowest UV index are March, April, May, June, July, September and October (UV index 4).
Average cloud cover in September
King William's Town, South Africa
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 61).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
King William's Town, South Africa
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, November and December (7km).
