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 signifies a subtle uplift in the average high-temperature, adjusting from 25.3°C (77.5°F) in August to a still warm 29.2°C (84.6°F). Alldays, in the heat of September, registers a significant plunge to a mean of 15°C (59°F) during the nights.Heat index
For most parts of September, the heat index is appraised at 29°C (84.2°F). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.For clarity, heat index numbers account for light winds and areas under shade. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
With an average relative humidity of 42%, September is the least humid month.Rainfall
January through July, September through December are months with rainfall in Alldays. September is the first month it rains in Alldays. Throughout September, in the average 2.3 rainfall days, it receives 4mm (0.16") of precipitation. In Alldays, South Africa, during the entire year, the rain falls for 94.1 days and collects up to 362mm (14.25") of precipitation.Daylight
In Alldays, the average length of the day in September is 11h and 58min.On the first day of the month, sunrise is at 06:13 and sunset at 17:53. On the last day of September, in Alldays, South Africa, sunrise is at 05:44 and sunset at 18:02 SAST.
Sunshine
The average sunshine in September in Alldays is 8.9h.UV index
The months with the highest UV index in Alldays, South Africa, are January through April, August through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Alldays during September?
What is the least humid month in Alldays?
What is the average humidity in September in Alldays?
When does it start raining in Alldays?
What is the average length of the day in September in Alldays?
When is the sunrise / sunset in September in Alldays?
How long on average sun shines in September in Alldays?
What are the months with the highest UV index in Alldays?
What is the UV index intensity in September in Alldays?
Average temperature in September
Alldays, South Africa
- Average high temperature in September: 29.2°C
The warmest months (with the highest average high temperature) are November and December (30.6°C).
The month with the lowest average high temperature is July (21.8°C).
- Average low temperature in September: 15°C
The month with the highest average low temperature is December (19.8°C).
The coldest month (with the lowest average low temperature) is July (9.4°C).
Average pressure in September
Alldays, South Africa
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is July (1023.7mbar).
The month with the lowest atmospheric pressure is January (1012.1mbar).
Average wind speed in September
Alldays, South Africa
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is October (12.9km/h).
The calmest month (with the lowest average wind speed) is May (7.4km/h).
Average humidity in September
Alldays, South Africa
- Average humidity in September: 42%
The month with the highest relative humidity is January (64%).
The month with the lowest relative humidity is September (42%).
Average rainfall in September
Alldays, South Africa
- Average rainfall in September: 4mm
The wettest month (with the highest rainfall) is December (91mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in September
Alldays, South Africa
- Average rainfall days in September: 2.3 days
The month with the highest number of rainy days is January (18.5 days).
The month with the least rainy days is August (0.5 days).
Average daylight in September /
Average sunshine in September
Alldays, South Africa
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is October (Average sunshine: 11h and 36min).
The month with the least sunshine is April (Average sunshine: 7h and 12min).
Average sunshine days in September
Alldays, South Africa
- Average sunshine days in September: 26.8 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is January (10.3 days).
Average UV index in September
Alldays, South Africa
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, August, September, October, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 5).
Average cloud cover in September
Alldays, South Africa
- Average cloud cover in September: 10
The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Alldays, 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).
