September weather forecast
Rumbek, South Sudan

In September, Rumbek embarks on the gradual transition from being drenched daily to witnessing more sunshine. Though still in the wet season, rainfall begins its descent with an average of 93mm (3.66") noted throughout the month. As the sun emerges more often, glimmers of the looming dry period become evident. The transition is gradual, offering the city a breather between two extreme weather seasons. Outdoor activities gain momentum, yet residents remain prepared for passing showers.

Temperature

The unfolding of September in Rumbek shows an average high-temperature of a still hot 31.7°C (89.1°F), indicating a slight variance from August's 31.3°C (88.3°F). An average nighttime temperature of 21.3°C (70.3°F) is observed in Rumbek during September.

Heat index

The heat index value for September is calculated to be an extremely hot 42°C (107.6°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

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

Rainfall

In September, in Rumbek, the rain falls for 22.3 days. Throughout September, 93mm (3.66") of precipitation is accumulated. In Rumbek, South Sudan, during the entire year, the rain falls for 171.8 days and collects up to 676mm (26.61") of precipitation.

Daylight

The average length of the day in September in Rumbek is 12h and 10min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:08. On the last day of September, in Rumbek, South Sudan, sunrise is at 05:49 and sunset at 17:53 CAT.

Sunshine

In Rumbek, South Sudan, the average sunshine in September is 8.8h.

UV index

In Rumbek, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.