September weather forecast
Big Bend, Swaziland

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Weather in September

September is the month that brings a change in Big Bend's dry spell, with rainfall levels escalating to 18mm (0.71"). The weather becomes slightly warmer, while daylight duration extends up to 11.9 hours. The shift in climatic conditions does little to affect relative humidity and visibility range. September signifies the arrival of the pre-rainy season, eliciting a change in the region's flora and fauna.

Temperature

Transitioning into September, Big Bend experiences an average high-temperature of a still warm 25.9°C (78.6°F), marking a minor shift from the preceding month. Nightly readings in September display a noticeable downturn from daily highs, with the average low-temperature registering a refreshing 13.6°C (56.5°F).

Humidity

The average relative humidity in September in Big Bend is 59%.

Rainfall

In Big Bend, in September, during 8.7 rainfall days, 18mm (0.71") of precipitation is typically accumulated. Throughout the year, there are 156.8 rainfall days, and 549mm (21.61") of precipitation is accumulated.

Daylight

The average length of the day in September is 11h and 56min.
On the first day of September, sunrise is at 06:04 and sunset at 17:39. On the last day of the month, sunrise is at 05:32 and sunset at 17:52 SAST.

Sunshine

In Big Bend, the average sunshine in September is 7.9h.

UV index

The months with the lowest UV index are April through October, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 5 in September transforms into this advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

What is the average September temperature?

In September, the average high-temperature and low-temperature are 25.9°C (78.6°F) and 13.6°C (56.5°F) respectively. In February, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 31°C (87.8°F).

What is the average humidity in September?

The average relative humidity in September is 59%.

How many days does it rain in September?

In Big Bend, in September, during 8.7 rainfall days, 18mm (0.71") of precipitation is typically accumulated.

How many hours of daylight does Big Bend have in September?

In Big Bend, the average day length in September is 11h and 56min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 06:04 and sunset at 17:39. On the last day of the month, sunrise is at 05:32 and sunset at 17:52 SAST.

How many hours of sunshine does Big Bend have in September?

In September, the average sunshine duration is 7.9h.

When is the lowest UV index?

The months with the lowest UV index are April through October, with an average maximum UV index of 5.

How high is the UV index in September?

In Big Bend, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Big Bend, Swaziland

Average temperature in September - Big Bend, Swaziland
  • Average high temperature in September: 25.9°C

The warmest month (with the highest average high temperature) is December (27.5°C).
The month with the lowest average high temperature is July (21.4°C).

  • Average low temperature in September: 13.6°C

The month with the highest average low temperature is December (17.5°C).
The coldest month (with the lowest average low temperature) is July (9.3°C).

Average pressure in September
Big Bend, Swaziland

Average pressure in September - Big Bend, Swaziland
  • Average pressure in September: 1019.2mbar

The month with the highest atmospheric pressure is July (1024.1mbar).
The month with the lowest atmospheric pressure is January (1014mbar).

Average wind speed in September
Big Bend, Swaziland

Average wind speed in September - Big Bend, Swaziland
  • Average wind speed in September: 8.2km/h

The windiest month (with the highest average wind speed) is September (8.2km/h).
The calmest month (with the lowest average wind speed) is March (6.1km/h).

Average humidity in September
Big Bend, Swaziland

Average humidity in September - Big Bend, Swaziland
  • Average humidity in September: 59%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (57%).

Average rainfall in September
Big Bend, Swaziland

Average rainfall in September - Big Bend, Swaziland
  • Average rainfall in September: 18mm

The wettest month (with the highest rainfall) is December (110mm).
The driest month (with the least rainfall) is July (4mm).

Average rainfall days in September
Big Bend, Swaziland

Average rainfall days in September - Big Bend, Swaziland
  • Average rainfall days in September: 8.7 days

The month with the highest number of rainy days is December (22.7 days).
The month with the least rainy days is June (3.6 days).

Average daylight in September /
Average sunshine in September
Big Bend, Swaziland

Average daylight in September / Average sunshine in September - Big Bend, Swaziland
  • Average daylight in September: 11h and 5min

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

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is November (Average sunshine: 9h and 0min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).

Average sunshine days in September
Big Bend, Swaziland

Average sunshine days in September - Big Bend, Swaziland
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is June (25.4 days).
The month with the least sunshine days is December (5.3 days).

Average UV index in September
Big Bend, Swaziland

Average UV index in September - Big Bend, Swaziland
  • Average UV index in September: 5

The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September and October (UV index 5).

Average cloud cover in September
Big Bend, Swaziland

Average cloud cover in September - Big Bend, Swaziland
  • Average cloud cover in September: 28

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 14).

Average visibility in September
Big Bend, Swaziland

Average visibility in September - Big Bend, Swaziland
  • Average visibility in September: 9km

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February and March (7km).

Big Bend, Swaziland

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