Windhoek
Namibia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Windhoek, Namibia

The monument of the first president of Namibia near the Lutheran Christ Church in Windhoek, Namibia
The monument of the first president of Namibia near the Lutheran Christ Church in Windhoek, Namibia
The first month of the spring, September, is also a moderately hot month in Windhoek, Namibia, with average temperature ranging between max 27.6°C (81.7°F) and min 12.6°C (54.7°F).

Temperature

In Windhoek, the average high-temperature in September slightly increases, from a moderately hot 23.9°C (75°F) in August, to a still warm 27.6°C (81.7°F). The average low-temperature, in Windhoek, Namibia, is 12.6°C (54.7°F).

Humidity

With an average relative humidity of 26%, September is the least humid month in Windhoek.

Rainfall

In September, the rain falls for 2 days. Throughout September, 3.8mm (0.1") of precipitation is accumulated. In Windhoek, Namibia, during the entire year, the rain falls for 66 days and collects up to 362.8mm (14.3") of precipitation.

Daylight

In Windhoek, Namibia, the average length of the day is 12h.

Sunshine

Months with the most sunshine are August and September, with an average of 11h of sunshine.

UV index

In Windhoek, the average daily maximum UV index is 10. A UV Index estimate of 8 to 10 represents a very high health hazard from the exposure to the Sun's UV rays for the ordinary person.
In September, the average maximum UV index of 10 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Protect yourself by liberally applying a sunscreen of at least 30 SPF. Sunscreen prevents sunburn and decreases the damaging effects of Sun's radiation on the immune system.

What is the temperature in September in Windhoek?

In September, the average high-temperature is 27.6°C (81.7°F), and the average low-temperature is 12.6°C (54.7°F).

What is the least humid month in Windhoek?

The least humid month is September, with an average relative humidity of 26%.

What is the average humidity in September in Windhoek?

The average relative humidity in September in Windhoek is 26%.

How much does it rain in Windhoek in September?

In Windhoek, during September, the rain falls for 2 days and regularly aggregates up to 3.8mm (0.1") of precipitation.

How many hours of daylight does Windhoek have in September?

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

What is the month with the most sunshine in Windhoek?

Months with the most sunshine in Windhoek, Namibia, are August and September, with an average of 11h of sunshine.

How long on average sun shines in September in Windhoek?

The average sunshine in September in Windhoek, Namibia, is 11h.

What is the UV index reading in September in Windhoek?

The average daily maximum UV index in September is 10. A UV Index value of 8 to 10 symbolizes a very high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Windhoek, Namibia
  • Average high temperature in September: 27.6°C

The warmest month (with the highest average high temperature) is December (31.6°C).
The month with the lowest average high temperature is June (21°C).

  • Average low temperature in September: 12.6°C

The month with the highest average low temperature is January (17.8°C).
The coldest month (with the lowest average low temperature) is July (7°C).

Average humidity in September - Windhoek, Namibia
  • Average humidity in September: 26%

The month with the highest relative humidity is March (58%).
The month with the lowest relative humidity is September (26%).

Average rainfall in September - Windhoek, Namibia
  • Average rainfall in September: 3.8mm

The wettest month (with the highest rainfall) is January (91.3mm).
The driest month (with the lowest rainfall) is July (0.4mm).

Average rainfall days in September - Windhoek, Namibia
  • Average rainfall days in September: 2 days

The month with the highest number of rainy days is January (13 days).
Months with the lowest number of rainy days are June, July and August (1 days).

Average daylight in September / Average sunshine in September - Windhoek, Namibia
  • Average daylight in September: 12h

The month with the longest days is December (Average daylight: 13.5h).
The month with shortest days is June (Average daylight: 10.8h).

  • Average sunshine in September: 11h

Months with most sunshine are August and September (Average sunshine: 11h).
The month with least sunshine is March (Average sunshine: 8h).

Average UV index in September - Windhoek, Namibia
  • Average UV index in September: 10

Months with the highest UV index are January, February, March, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 6).