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
The shift into September records an average high-temperature of a still pleasant 21.2°C (70.2°F), subtly varied from August's 20.9°C (69.6°F). Throughout the September nights, Kei Mouth encounters a low-temperature of 15.2°C (59.4°F).Humidity
In Kei Mouth, the average relative humidity in September is 69%.Rainfall
In Kei Mouth, during September, the rain falls for 10 days and regularly aggregates up to 18mm (0.71") of precipitation. Throughout the year, there are 140.9 rainfall days, and 352mm (13.86") of precipitation is accumulated.Daylight
In September, the average length of the day is 11h and 54min.On the first day of September, sunrise is at 06:23 and sunset at 17:49. On the last day of the month, sunrise is at 05:44 and sunset at 18:08 SAST.
Sunshine
The average sunshine in September is 7.5h.UV index
The months with the lowest UV index are March, May through November, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 5 in September transforms into the following instructions:
Exercise prevention - Warding off sunburn is urged. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Kei Mouth?
What is the average humidity in September in Kei Mouth?
How much does it rain in Kei Mouth in September?
How many hours of daylight does Kei Mouth have in September?
When is the sunrise / sunset in September in Kei Mouth?
How long on average sun shines in September in Kei Mouth?
When is the lowest UV index in Kei Mouth?
What is the UV index intensity in September in Kei Mouth?
Average temperature in September
Kei Mouth, South Africa
- Average high temperature in September: 21.2°C
The warmest month (with the highest average high temperature) is February (25.7°C).
The month with the lowest average high temperature is July (20.8°C).
- Average low temperature in September: 15.2°C
The month with the highest average low temperature is February (20.3°C).
The coldest month (with the lowest average low temperature) is July (14.2°C).
Average pressure in September
Kei Mouth, South Africa
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is July (1022.5mbar).
The month with the lowest atmospheric pressure is January (1013.8mbar).
Average wind speed in September
Kei Mouth, South Africa
- Average wind speed in September: 20.5km/h
The windiest month (with the highest average wind speed) is October (20.7km/h).
The calmest month (with the lowest average wind speed) is May (16.8km/h).
Average humidity in September
Kei Mouth, South Africa
- Average humidity in September: 69%
The months with the highest relative humidity are January and December (78%).
The month with the lowest relative humidity is June (58%).
Average rainfall in September
Kei Mouth, South Africa
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is February (44mm).
The driest month (with the least rainfall) is May (14mm).
Average rainfall days in September
Kei Mouth, South Africa
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is December (15.9 days).
The month with the least rainy days is June (6.3 days).
Average daylight in September /
Average sunshine in September
Kei Mouth, 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 3min
The month with the most sunshine is November (Average sunshine: 8h and 42min).
The month with the least sunshine is April (Average sunshine: 6h and 18min).
Average sunshine days in September
Kei Mouth, South Africa
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is June (21.8 days).
The month with the least sunshine days is December (12.5 days).
Average UV index in September
Kei Mouth, South Africa
- Average UV index in September: 5
The months with the highest UV index are January, February, April and December (UV index 6).
The months with the lowest UV index are March, May, June, July, August, September, October and November (UV index 5).
Average cloud cover in September
Kei Mouth, South Africa
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
Kei Mouth, South Africa
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
