September weather forecast and climate
Vlei, Botswana

Weather in September

The first month of the spring, September, is also a moderately hot month in Vlei, Botswana, with average temperature fluctuating between 29.5°C (85.1°F) and 14.2°C (57.6°F).

Temperature

In Vlei, the average high-temperature marginally rises, from a moderately hot 25.3°C (77.5°F) in August, to a still warm 29.5°C (85.1°F). In Vlei, the average low-temperature is 14.2°C (57.6°F).

Humidity

September is the least humid month in Vlei, Botswana, with an average relative humidity of 31%.

Rainfall

January through July, September through December are months with rainfall in Vlei. September is the first month it rains. Throughout September, in the average 1.8 rainfall days, it receives 2mm (0.08") of precipitation. Throughout the year, there are 81.7 rainfall days, and 242mm (9.53") of precipitation is accumulated.

Daylight

In Vlei, the average length of the day is 12h.

Sunshine

The average sunshine in Vlei, Botswana, is 10h.

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 the Sun's UV rays for average individuals.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Vlei?

In September, the average high-temperature is 29.5°C (85.1°F), and the average low-temperature is 14.2°C (57.6°F).

What is the least humid month in Vlei?

September is the least humid month, with an average relative humidity of 31%.

What is the average humidity in September in Vlei?

In September, the average relative humidity in Vlei, Botswana, is 31%.

When does it start raining in Vlei?

September is the first month it rains. Throughout September, in the average 1.8 rainfall days, it receives 2mm (0.08") of precipitation.

How many hours of daylight does Vlei have in September?

The average length of the day in September in Vlei is 12h.

How many hours of sunshine does Vlei have in September?

In Vlei, Botswana, the average sunshine in September is 10h.

What is the UV index intensity in September in Vlei?

In Vlei, Botswana, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the UV radiation.

Average temperature in September
Vlei, Botswana

Average temperature in September - Vlei, Botswana
  • Average high temperature in September: 29.5°C

The warmest months (with the highest average high temperature) are October, November and December (31.5°C).
The month with the lowest average high temperature is July (20.9°C).

  • Average low temperature in September: 14.2°C

The month with the highest average low temperature is January (21°C).
The coldest month (with the lowest average low temperature) is July (7.7°C).

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Average pressure in September
Vlei, Botswana

Average pressure in September - Vlei, Botswana
  • Average pressure in September: 1017.2mbar

The month with the highest atmospheric pressure is July (1023.9mbar).
The month with the lowest atmospheric pressure is January (1011.3mbar).

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Average wind speed in September
Vlei, Botswana

Average wind speed in September - Vlei, Botswana
  • Average wind speed in September: 10.4km/h

The windiest month (with the highest average wind speed) is October (11.8km/h).
The calmest month (with the lowest average wind speed) is May (6.4km/h).

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Average humidity in September
Vlei, Botswana

Average humidity in September - Vlei, Botswana
  • Average humidity in September: 31%

The month with the highest relative humidity is February (56%).
The month with the lowest relative humidity is September (31%).

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Average rainfall in September
Vlei, Botswana

Average rainfall in September - Vlei, Botswana
  • Average rainfall in September: 2mm

The wettest month (with the highest rainfall) is January (52mm).
The driest month (with the least rainfall) is August (0mm).

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Average rainfall days in September
Vlei, Botswana

Average rainfall days in September - Vlei, Botswana
  • Average rainfall days in September: 1.8 days

The month with the highest number of rainy days is January (14.5 days).
The month with the least rainy days is August (0.5 days).

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Average daylight in September /
Average sunshine in September
Vlei, Botswana

Average daylight in September / Average sunshine in September - Vlei, Botswana
  • Average daylight in September: 12h

The month with the longest days is December (Average daylight: 13.7h).
The month with the shortest days is June (Average daylight: 10.6h).

  • Average sunshine in September: 10h

The month with the most sunshine is October (Average sunshine: 11.9h).
Months with the least sunshine are May, June and July (Average sunshine: 7.6).

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Average sunshine days in September
Vlei, Botswana

Average sunshine days in September - Vlei, Botswana
  • Average sunshine days in September: 27.5 days

The month with the most sunshine days is August (29.3 days).
Months with the least sunshine days are January and December (12.9 days).

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Average UV index in September
Vlei, Botswana

Average UV index in September - Vlei, Botswana
  • Average UV index in September: 6

Months with the highest UV index are January, October and November (UV index 7).
The month with the lowest UV index is June (UV index 4).

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Average cloud cover in September
Vlei, Botswana

Average cloud cover in September - Vlei, Botswana
  • Average cloud cover in September: 7

The month with the most cloud cover is January (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in September
Vlei, Botswana

Average visibility in September - Vlei, Botswana
  • Average visibility in September: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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