September weather forecast
Juba, South Sudan

Meandering River Nile through the city of Juba, in South Sudan
Meandering River Nile through the city of Juba, in South Sudan

Weather in September

September, the first month of the autumn, in Juba, is still a hot month, with average temperature ranging between min 21.1°C (70°F) and max 33.1°C (91.6°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still tropical 33.1°C (91.6°F). In September, in Juba, the average low-temperature is 21.1°C (70°F).

Heat index

In September, the average heat index is evaluated at a life-threatening hot 47°C (116.6°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like differences in body mass, height, and shape, metabolic differences, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity in Juba is 77%.

Rainfall

In September, in Juba, South Sudan, the rain falls for 8.6 days. Throughout September, 103.7mm (4.08") of precipitation is accumulated. Throughout the year, in Juba, there are 96.2 rainfall days, and 953.7mm (37.55") of precipitation is accumulated.

Daylight

In Juba, South Sudan, the average length of the day is 12.1h.

Sunshine

The average sunshine in Juba is 7.6h.

UV index

January through May, August through November, with an average maximum UV index of 12, are months with the highest UV index in Juba. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 12 interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.
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FAQ

What is the temperature in September in Juba?

In Juba, South Sudan, in September, the average high-temperature is 33.1°C (91.6°F), and the average low-temperature is 21.1°C (70°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in September is evaluated at 47°C (116.6°F).

What is the average humidity in September in Juba?

In September, the average relative humidity is 77%.

How much does it rain in Juba in September?

In Juba, during September, the rain falls for 8.6 days and regularly aggregates up to 103.7mm (4.08") of precipitation.

How many hours of daylight does Juba have in September?

In September, the average length of the day in Juba, South Sudan, is 12.1h.

How many hours of sunshine does Juba have in September?

In September, the average sunshine in Juba, South Sudan, is 7.6h.

What is the month with the highest UV index in Juba?

January through May, August through November, with an average maximum UV index of 12, are months with the highest UV index in Juba.

How high is the UV index in September in Juba?

The average daily maximum UV index in September in Juba is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Juba, South Sudan

Average temperature in September - Juba, South Sudan
  • Average high temperature in September: 33.1°C

The warmest month (with the highest average high temperature) is February (37.9°C).
The month with the lowest average high temperature is July (31.1°C).

  • Average low temperature in September: 21.1°C

The month with the highest average low temperature is March (23.6°C).
The coldest month (with the lowest average low temperature) is December (20°C).

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Average humidity in September
Juba, South Sudan

Average humidity in September - Juba, South Sudan
  • Average humidity in September: 77%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is February (42%).

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Average rainfall in September
Juba, South Sudan

Average rainfall in September - Juba, South Sudan
  • Average rainfall in September: 103.7mm

The wettest month (with the highest rainfall) is July (144.7mm).
The driest month (with the least rainfall) is January (5.1mm).

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Average rainfall days in September
Juba, South Sudan

Average rainfall days in September - Juba, South Sudan
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is January (1.4 days).

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Average daylight in September /
Average sunshine in September
Juba, South Sudan

Average daylight in September / Average sunshine in September - Juba, South Sudan
  • Average daylight in September: 12.1h

Months with the longest days are June and July (Average daylight: 12.4h).
The month with the shortest days is December (Average daylight: 11.8h).

  • Average sunshine in September: 7.6h

The month with the most sunshine is January (Average sunshine: 9h).
The month with the least sunshine is July (Average sunshine: 5.9h).

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Average UV index in September
Juba, South Sudan

Average UV index in September - Juba, South Sudan
  • Average UV index in September: 12

Months with the highest UV index are January, February, March, April, May, August, September, October and November (UV index 12).
Months with the lowest UV index are June, July and December (UV index 11).

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