September weather forecast
Yanbu, Saudi Arabia

Even though September signals the departure of the peak summer season, high temperatures persist in Yanbu. The rainfall level scarcely changes, depicting a continuation of the dry spell at 0mm (0"). Nonetheless, September weather signals the hint of a decrease in temperatures. The length of the day begins to shorten gradually with the advent of autumn. While Yanbu remains hot and mostly arid, the city prepares to welcome the cooler end-of-the-year weather.

Temperature

Yanbu's weather, upon September's arrival, documents an average high-temperature of a torrid 39.9°C (103.8°F), nearly identical to the prior month. Yanbu reports a marked divergence from daytime peaks throughout September, with lows averaging at a warm 26.1°C (79°F).

Heat index

September's average heat index is calculated to be a life-threatening hot 58°C (136.4°F). Warning: These weather conditions are seen as incredibly dangerous, heatstroke is imminent.
The metrics for the heat index are tailored for both shady environments and light winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 highly critical to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In September, the average relative humidity in Yanbu is 55%.

Rainfall

January through May, September through December are months with rainfall. September is the first month it rains. Throughout September, in the average 0.1 rainfall days, it receives 0mm (0") of precipitation. Throughout the year, in Yanbu, there are 7.7 rainfall days, and 33mm (1.3") of precipitation is accumulated.

Daylight

In September, the average length of the day in Yanbu is 12h and 17min.
On the first day of September in Yanbu, Saudi Arabia, sunrise is at 06:08 and sunset at 18:45. On the last day of the month, sunrise is at 06:18 and sunset at 18:15 +03.