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
Weather in September
Temperature
September signals a minor shift in the average high-temperature, moving from August's moderately hot 25.3°C (77.5°F) to a still warm 29.2°C (84.6°F). In September, the nighttime temperature plummets remarkably from the daily apex to a steady average of 15°C (59°F).Heat index
The heat index value for September is evaluated at 29°C (84.2°F). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
The least humid month in Vivo, South Africa, is September, with an average relative humidity of 42%.Rainfall
Months with rainfall are January through July, September through December. September is the first month it rains in Vivo. Throughout September, in the average 2.3 rainfall days, it receives 4mm (0.16") of precipitation. In Vivo, South Africa, during the entire year, the rain falls for 94.1 days and collects up to 362mm (14.25") of precipitation.Daylight
The average length of the day in September is 11h and 58min.On the first day of the month, sunrise is at 06:12 and sunset at 17:52. On the last day of September, sunrise is at 05:43 and sunset at 18:01 SAST.
Sunshine
The average sunshine in September in Vivo is 8.9h.UV index
January through April, August through December, with an average maximum UV index of 6, are months with the highest UV index in Vivo, South Africa. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
How hot is it in Vivo in September?
What is the least humid month in Vivo?
What is the average humidity in September in Vivo?
When does it start to rain in Vivo?
What is the average length of the day in September in Vivo?
When is the sunrise / sunset in September in Vivo?
How long on average sun shines in September in Vivo?
What is the month with the highest UV index in Vivo?
What is the UV index intensity in September in Vivo?
Average temperature in September
Vivo, 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
Vivo, 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
Vivo, 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
Vivo, 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
Vivo, 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
Vivo, 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
Vivo, 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 42min).
- 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
Vivo, 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
Vivo, 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
Vivo, 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
Vivo, 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).
Vivo, South Africa
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