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 snowfall in September
- Average snowfall 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
In Rosmead, the average high-temperature in September slightly rises, from an enjoyable 18.4°C (65.1°F) in August, to an agreeable 21.8°C (71.2°F). In Rosmead, an average nighttime temperature of 10°C (50°F) is expected during September.Humidity
The least humid month is September, with an average relative humidity of 42%.Rainfall
In September, in Rosmead, the rain falls for 4.3 days. Throughout September, 8mm (0.31") of precipitation is accumulated. Throughout the year, there are 74.1 rainfall days, and 148mm (5.83") of precipitation is accumulated.Snowfall
In Rosmead, snow does not fall in January through July, September through December.Daylight
In Rosmead, the average length of the day in September is 11h and 55min.On the first day of September, sunrise is at 06:35 and sunset at 18:03. On the last day of the month, sunrise is at 05:57 and sunset at 18:20 SAST.
Sunshine
The average sunshine in September in Rosmead is 9.4h.UV index
The months with the lowest UV index are May through July and September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What are the temperatures in Rosmead in September?
What is the least humid month in Rosmead?
What is the average humidity in September in Rosmead?
How many days does it rain in September in Rosmead?
When it does not snow in Rosmead?
Does it snow in Rosmead in September?
How many hours of daylight does Rosmead have in September?
When is the sunrise / sunset in September in Rosmead?
How long on average sun shines in September in Rosmead?
What are the months with the lowest UV index in Rosmead?
How high is the UV index in September in Rosmead?
Average temperature in September
Rosmead, South Africa
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is January (29.1°C).
The months with the lowest average high temperature are June and July (16.8°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is February (17.1°C).
The coldest month (with the lowest average low temperature) is July (6.8°C).
Average pressure in September
Rosmead, South Africa
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is July (1023.5mbar).
The month with the lowest atmospheric pressure is January (1012.6mbar).
Average wind speed in September
Rosmead, South Africa
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is June (14.7km/h).
The calmest month (with the lowest average wind speed) is April (10.8km/h).
Average humidity in September
Rosmead, South Africa
- Average humidity in September: 42%
The month with the highest relative humidity is February (54%).
The month with the lowest relative humidity is September (42%).
Average rainfall in September
Rosmead, South Africa
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is January (28mm).
The driest months (with the least rainfall) are May and August (4mm).
Average rainfall days in September
Rosmead, South Africa
- Average rainfall days in September: 4.3 days
The month with the highest number of rainy days is January (9.6 days).
The month with the least rainy days is June (2.9 days).
Average snowfall in September
Rosmead, South Africa
- Average snowfall in September: 0mm
The month with the highest snowfall is August (2mm).
The months with the least snowfall are January, February, March, April, May, June, July, September, October, November and December (0mm).
Average snowfall days in September
Rosmead, South Africa
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is August (0.3 days).
The months with the least snowfall days are January, February, March, April, May, June, July, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Rosmead, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is November (Average sunshine: 11h and 42min).
The months with the least sunshine are June and July (Average sunshine: 7h and 18min).
Average sunshine days in September
Rosmead, South Africa
- Average sunshine days in September: 24.6 days
The months with the most sunshine days are May and July (26.3 days).
The month with the least sunshine days is February (14 days).
Average UV index in September
Rosmead, 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 months with the lowest UV index are May, June, July and September (UV index 4).
Average cloud cover in September
Rosmead, South Africa
- Average cloud cover in September: 16
The months with the most cloud cover are January, February, October and December (Cloud cover 20).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in September
Rosmead, 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).
Rosmead, South Africa
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