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
September
Weather in September
Temperature
September's onset brings a subtle temperature rise, moving from an agreeable 21.3°C (70.3°F) in August to a warm 25.7°C (78.3°F). Despite a noticeable differential from daytime highs, Willowdene notes an average nighttime low-temperature of 11.5°C (52.7°F) in September.Humidity
With an average relative humidity of 33%, September is the least humid month in Willowdene.Rainfall
In September, in Willowdene, the rain falls for 2.5 days. Throughout September, 5mm (0.2") of precipitation is accumulated. In Willowdene, South Africa, during the entire year, the rain falls for 97.6 days and collects up to 377mm (14.84") of precipitation.Daylight
In September, the average length of the day in Willowdene is 11h and 57min.On the first day of September in Willowdene, South Africa, sunrise is at 06:20 and sunset at 17:55. On the last day of the month, sunrise is at 05:48 and sunset at 18:07 SAST.
Sunshine
In Willowdene, South Africa, the average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Willowdene?
What is the least humid month in Willowdene?
What is the average humidity in September in Willowdene?
How many days does it rain in September in Willowdene?
How many hours of daylight does Willowdene have in September?
When are sunrise and sunset in September in Willowdene?
How long on average sun shines in September in Willowdene?
What is the UV index intensity in September in Willowdene?
Average temperature in September
Willowdene, South Africa
- Average high temperature in September: 25.7°C
The warmest month (with the highest average high temperature) is December (27.5°C).
The month with the lowest average high temperature is July (17.7°C).
- Average low temperature in September: 11.5°C
The months with the highest average low temperature are January and December (16.3°C).
The coldest month (with the lowest average low temperature) is July (5.9°C).
Average pressure in September
Willowdene, South Africa
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is July (1024.7mbar).
The month with the lowest atmospheric pressure is January (1013.1mbar).
Average wind speed in September
Willowdene, South Africa
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is November (12km/h).
The calmest month (with the lowest average wind speed) is May (7.9km/h).
Average humidity in September
Willowdene, South Africa
- Average humidity in September: 33%
The months with the highest relative humidity are January and February (63%).
The month with the lowest relative humidity is September (33%).
Average rainfall in September
Willowdene, South Africa
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is December (86mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in September
Willowdene, South Africa
- Average rainfall days in September: 2.5 days
The month with the highest number of rainy days is January (17.8 days).
The months with the least rainy days are July and August (0.8 days).
Average daylight in September /
Average sunshine in September
Willowdene, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 13h and 48min).
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 24min).
Average sunshine days in September
Willowdene, South Africa
- Average sunshine days in September: 27.1 days
The month with the most sunshine days is July (30.1 days).
The month with the least sunshine days is January (10.8 days).
Average UV index in September
Willowdene, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, 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
Willowdene, South Africa
- Average cloud cover in September: 8
The month with the most cloud cover is January (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Willowdene, 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).
