September weather forecastGross Barmen, Namibia

September

Weather in September

September, the first month of the spring in Gross Barmen, is still a warm month, with an average temperature varying between 12.7°C (54.9°F) and 27.3°C (81.1°F).

Temperature

Observing a slight rise in September, the average high-temperature shifts from August's moderately hot 23.6°C (74.5°F) to a still warm 27.3°C (81.1°F). A significant temperature decrease to an average a fresh 12.7°C (54.9°F) characterizes Gross Barmen's nighttime temperatures during September.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 19%.

Rainfall

January through May, September through December are months with rainfall. September is the first month it rains. Throughout September, in the average 1.6 rainfall days, it receives 2mm (0.08") of precipitation. Throughout the year, there are 80.2 rainfall days, and 304mm (11.97") of precipitation is accumulated.

Daylight

In Gross Barmen, the average length of the day in September is 11h and 59min.
On the first day of the month, sunrise is at 07:02 and sunset at 18:43. On the last day of September, sunrise is at 06:34 and sunset at 18:51 CAT.

Sunshine

In September, the average sunshine is 9.9h.

UV index

In Gross Barmen, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 5 during September translates into these guidelines:
Undertake protective steps - Recommendations to avoid sunburn are issued. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

The high-temperature during September is 27.3°C (81.1°F) and the low-temperature is 12.7°C (54.9°F). In February, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is calculated to be 28°C (82.4°F).

The months with the lowest humidity in Gross Barmen are September and October, with an average relative humidity of 19%.

In September, the average relative humidity is 19%.

September is the first month it rains. Throughout September, in the average 1.6 rainfall days, it receives 2mm (0.08") of precipitation.

In September, the average day length is 11h and 59min.

On the first day of September, sunrise is at 07:02 and sunset at 18:43. On the last day of the month, sunrise is at 06:34 and sunset at 18:51 CAT.

The average sunshine duration in September is 9.9h.

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Gross Barmen, Namibia

  • Average high temperature in September: 27.3°C

The warmest months (with the highest average high temperature) are October and November (29.5°C).
The month with the lowest average high temperature is July (19.8°C).

  • Average low temperature in September: 12.7°C

The month with the highest average low temperature is January (18.9°C).
The coldest month (with the lowest average low temperature) is July (6°C).

Average pressure in September
Gross Barmen, Namibia

  • Average pressure in September: 1016.2mbar

The month with the highest atmospheric pressure is July (1021.3mbar).
The month with the lowest atmospheric pressure is January (1010.7mbar).

Average wind speed in September
Gross Barmen, Namibia

  • Average wind speed in September: 11.7km/h

The windiest month (with the highest average wind speed) is October (12.6km/h).
The calmest month (with the lowest average wind speed) is March (9.3km/h).

Average humidity in September
Gross Barmen, Namibia

  • Average humidity in September: 19%

The month with the highest relative humidity is March (51%).
The months with the lowest relative humidity are September and October (19%).

Average rainfall in September
Gross Barmen, Namibia

  • Average rainfall in September: 2mm

The wettest month (with the highest rainfall) is February (102mm).
The driest months (with the least rainfall) are June, July and August (0mm).

Average rainfall days in September
Gross Barmen, Namibia

  • Average rainfall days in September: 1.6 days

The month with the highest number of rainy days is February (15.9 days).
The month with the least rainy days is August (0 days).

Average daylight in September /
Average sunshine in September
Gross Barmen, Namibia

  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).

  • Average sunshine in September: 9h and 54min

The month with the most sunshine is November (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 9h and 24min).

Average sunshine days in September
Gross Barmen, Namibia

  • Average sunshine days in September: 27.9 days

The month with the most sunshine days is July (30.7 days).
The month with the least sunshine days is February (9.8 days).

Average UV index in September
Gross Barmen, Namibia

  • Average UV index in September: 5

The months with the highest UV index are January, February, October, November and December (UV index 6).
The months with the lowest UV index are June and July (UV index 4).

Average cloud cover in September
Gross Barmen, Namibia

  • Average cloud cover in September: 6

The month with the most cloud cover is February (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 1).

Average visibility in September
Gross Barmen, 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).