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 beginning of September signals a minor rise in the average high-temperature, moving from a moderately hot 26.9°C (80.4°F) in August to a tropical 30.7°C (87.3°F). A significant temperature decrease to an average a refreshing 15.5°C (59.9°F) characterizes Wilhelmstal's nighttime temperatures during September.Humidity
The least humid month in Wilhelmstal is September, with an average relative humidity of 21%.Rainfall
January through May, September through December are months with rainfall. September is the first month it rains. Throughout September, in the average 2.2 rainfall days, it receives 2mm (0.08") of precipitation. In Wilhelmstal, during the entire year, the rain falls for 79.5 days and collects up to 272mm (10.71") of precipitation.Daylight
In Wilhelmstal, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 07:03 and sunset at 18:45. On the last day of September, sunrise is at 06:35 and sunset at 18:53 CAT.
Sunshine
In Wilhelmstal, the average sunshine in September is 9.9h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the least humid month?
What is the average humidity in September?
When does it start to rain?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Wilhelmstal, Namibia
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is October (32.4°C).
The month with the lowest average high temperature is June (23.6°C).
- Average low temperature in September: 15.5°C
The month with the highest average low temperature is December (20.1°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).
Average pressure in September
Wilhelmstal, Namibia
- Average pressure in September: 1014.9mbar
The month with the highest atmospheric pressure is July (1019.4mbar).
The month with the lowest atmospheric pressure is January (1010.9mbar).
Average wind speed in September
Wilhelmstal, Namibia
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is July (13.1km/h).
The calmest month (with the lowest average wind speed) is February (9km/h).
Average humidity in September
Wilhelmstal, Namibia
- Average humidity in September: 21%
The month with the highest relative humidity is March (51%).
The month with the lowest relative humidity is September (21%).
Average rainfall in September
Wilhelmstal, Namibia
- Average rainfall in September: 2mm
The wettest month (with the highest rainfall) is February (82mm).
The driest months (with the least rainfall) are June, July and August (0mm).
Average rainfall days in September
Wilhelmstal, Namibia
- Average rainfall days in September: 2.2 days
The month with the highest number of rainy days is February (15.5 days).
The month with the least rainy days is July (0 days).
Average daylight in September /
Average sunshine in September
Wilhelmstal, Namibia
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 9h and 30min).
Average sunshine days in September
Wilhelmstal, Namibia
- Average sunshine days in September: 27 days
The month with the most sunshine days is July (31 days).
The month with the least sunshine days is February (10.9 days).
Average UV index in September
Wilhelmstal, Namibia
- Average UV index in September: 6
The months with the highest UV index are January, October, November and December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 5).
Average cloud cover in September
Wilhelmstal, Namibia
- Average cloud cover in September: 5
The month with the most cloud cover is February (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 1).
Average visibility in September
Wilhelmstal, Namibia
- 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).
