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
September
Weather in September
Temperature
Flagstaff's shift from August to September is accompanied by an average high-temperature of an agreeable 21°C (69.8°F), a slight deviation from 18.4°C (65.1°F). A steady average of 8.7°C (47.7°F) throughout September underscores a considerable divergence from the daytime high.Humidity
The average relative humidity in September is 60%.Rainfall
In September, the rain falls for 7.9 days. Throughout September, 17mm (0.67") of precipitation is accumulated. In Flagstaff, during the entire year, the rain falls for 150.4 days and collects up to 609mm (23.98") of precipitation.Snowfall
In Flagstaff, South Africa, snow does not fall in January through June, September through December.Daylight
In Flagstaff, the average length of the day in September is 11h and 55min.On the first day of the month, sunrise is at 06:17 and sunset at 17:46. On the last day of September, sunrise is at 05:40 and sunset at 18:03 SAST.
Sunshine
The average sunshine in September is 7.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. 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 is the usual temperature for Flagstaff in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Flagstaff have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Flagstaff have in September?
What is the UV index reading in September in Flagstaff?
Average temperature in September
Flagstaff, South Africa
- Average high temperature in September: 21°C
The warmest month (with the highest average high temperature) is January (23.3°C).
The month with the lowest average high temperature is July (16.3°C).
- Average low temperature in September: 8.7°C
The month with the highest average low temperature is January (13.5°C).
The coldest month (with the lowest average low temperature) is July (4.3°C).
Average pressure in September
Flagstaff, South Africa
- Average pressure in September: 1019.1mbar
The month with the highest atmospheric pressure is July (1023.7mbar).
The month with the lowest atmospheric pressure is January (1014.5mbar).
Average wind speed in September
Flagstaff, South Africa
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is August (9.4km/h).
The calmest months (with the lowest average wind speed) are February and March (7.3km/h).
Average humidity in September
Flagstaff, South Africa
- Average humidity in September: 60%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Flagstaff, South Africa
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is January (113mm).
The driest month (with the least rainfall) is June (6mm).
Average rainfall days in September
Flagstaff, South Africa
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is January (23.3 days).
The month with the least rainy days is June (3.2 days).
Average snowfall in September
Flagstaff, South Africa
- Average snowfall in September: 0mm
The month with the highest snowfall is August (12mm).
The months with the least snowfall are January, February, March, April, May, June, September, October, November and December (0mm).
Average snowfall days in September
Flagstaff, South Africa
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are July and August (0.3 days).
The months with the least snowfall days are January, February, March, April, May, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Flagstaff, South Africa
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 6min).
The month with the shortest days is June (Average daylight: 10h and 12min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is October (Average sunshine: 8h and 54min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).
Average sunshine days in September
Flagstaff, South Africa
- Average sunshine days in September: 20.7 days
The month with the most sunshine days is June (25.6 days).
The month with the least sunshine days is January (5.7 days).
Average UV index in September
Flagstaff, South Africa
- Average UV index in September: 4
The months with the highest UV index are January, February, November and December (UV index 5).
The months with the lowest UV index are May and June (UV index 3).
Average cloud cover in September
Flagstaff, South Africa
- Average cloud cover in September: 34
The months with the most cloud cover are January and December (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Flagstaff, South Africa
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January and December (6km).
