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
Entering September, the average high-temperature is recorded at a still comfortable 18.5°C (65.3°F), exhibiting a minimal shift from August's 16.6°C (61.9°F). An average low-temperature of 8.1°C (46.6°F) is observed during the September nights.Humidity
In Stompneusbaai, South Africa, the average relative humidity in September is 75%.Rainfall
In September, in Stompneusbaai, the rain falls for 10.5 days. Throughout September, 35mm (1.38") of precipitation is accumulated. In Stompneusbaai, during the entire year, the rain falls for 98.9 days and collects up to 437mm (17.2") of precipitation.Daylight
In September, the average length of the day is 11h and 54min.On the first day of September in Stompneusbaai, sunrise is at 07:04 and sunset at 18:31. On the last day of the month, sunrise is at 06:25 and sunset at 18:49 SAST.
Sunshine
In September, the average sunshine is 8.1h.UV index
In Stompneusbaai, South Africa, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September translates into the following guidance:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Stompneusbaai?
What is the average humidity in September in Stompneusbaai?
How many days does it rain in September in Stompneusbaai?
How many hours of daylight does Stompneusbaai have in September?
When is the sunrise / sunset in September in Stompneusbaai?
How many hours of sunshine does Stompneusbaai have in September?
How high is the UV index in September in Stompneusbaai?
Average temperature in September
Stompneusbaai, South Africa
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is February (29.1°C).
The months with the lowest average high temperature are June and July (16.3°C).
- Average low temperature in September: 8.1°C
The month with the highest average low temperature is January (15.8°C).
The coldest month (with the lowest average low temperature) is August (6.7°C).
Average pressure in September
Stompneusbaai, South Africa
- Average pressure in September: 1019.5mbar
The month with the highest atmospheric pressure is July (1022.1mbar).
The months with the lowest atmospheric pressure are January and February (1013.3mbar).
Average wind speed in September
Stompneusbaai, South Africa
- Average wind speed in September: 10.1km/h
The windiest months (with the highest average wind speed) are January and November (11.4km/h).
The calmest month (with the lowest average wind speed) is May (9.4km/h).
Average humidity in September
Stompneusbaai, South Africa
- Average humidity in September: 75%
The month with the highest relative humidity is August (76%).
The months with the lowest relative humidity are January and February (61%).
Average rainfall in September
Stompneusbaai, South Africa
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is June (107mm).
The driest month (with the least rainfall) is February (6mm).
Average rainfall days in September
Stompneusbaai, South Africa
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is August (12.4 days).
The month with the least rainy days is February (3.7 days).
Average daylight in September /
Average sunshine in September
Stompneusbaai, 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: 8h and 1min
The months with the most sunshine are January and December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in September
Stompneusbaai, South Africa
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is March (24.3 days).
The month with the least sunshine days is June (16.1 days).
Average UV index in September
Stompneusbaai, South Africa
- Average UV index in September: 4
The months with the highest UV index are January, February, November and December (UV index 6).
The month with the lowest UV index is June (UV index 3).
Average cloud cover in September
Stompneusbaai, South Africa
- Average cloud cover in September: 30
The month with the most cloud cover is June (Cloud cover 33).
The month with the least cloud cover is February (Cloud cover 12).
Average visibility in September
Stompneusbaai, South Africa
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
