September weather forecast
Lul, South Sudan

In September, Lul begins to transition from a wet to a dry period. Rainfall and humidity both start to reduce, and daylight hours also begin to increase. The skies start to clear up, offering brighter days and thus subtly increasing the temperature again. A notable decrease in rainfall to 83mm (3.27") signifies the near-end of this wet season. Despite the reduction in rainfall, the weather remains moderate, with pleasant temperatures, making September an excellent time for tourists to visit Lul.

Temperature

The advent of September denotes an average high-temperature of a still tropical 32.8°C (91°F), subtly different from August's 31.3°C (88.3°F). The temperature dips to an average of 22.5°C (72.5°F) during September nights.

Heat index

September's heat index is appraised at a blisteringly hot 44°C (111.2°F). Precaution: Heat cramps along with heat exhaustion are possible. Heatstroke is a serious risk with continued exertion.
Note that heat index values are valued for light wind and location in the shade. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in September is 73%.

Rainfall

In Lul, in September, during 19.5 rainfall days, 83mm (3.27") of precipitation is typically accumulated. Throughout the year, there are 122.1 rainfall days, and 517mm (20.35") of precipitation is accumulated.

Daylight

In Lul, the average length of the day in September is 12h and 11min.
On the first day of September in Lul, sunrise is at 05:43 and sunset at 18:01. On the last day of the month, sunrise is at 05:40 and sunset at 17:43 CAT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.