September weather forecast
Ruwi, Oman

September witnesses a further decrease in temperatures from 28.7°C (83.7°F) to 34.1°C (93.4°F), signaling the impending end of Ruwi, Oman's hot season. Marking the onset of the post-summer phase, the climate starts to cool down, with a recorder zero rainfall over the month. Despite shorter daylight hours compared to August, heat exposure remains substantial with a high UV Index of 8. Notably, wind speed, atmospheric pressure and relative humidity remain constant, retaining the city's weather consistency. Advancing towards year-end, September's weather steadies, paving the way for a cooler season ahead.

Temperature

The shift to September signals an average high-temperature of a still hot 34.1°C (93.4°F), subtly varied from August's 34.4°C (93.9°F). Ruwi, in the month of September, anticipates a consistent average low-temperature of 28.7°C (83.7°F).

Heat index

The heat index in September is calculated to be a blisteringly hot 40°C (104°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In September, the average relative humidity in Ruwi, Oman, is 53%.

Rainfall

September is the only month when rain does not fall.

Daylight

In Ruwi, the average length of the day in September is 12h and 17min.
On the first day of September, sunrise is at 05:47 and sunset at 18:23. On the last day of the month, sunrise is at 05:57 and sunset at 17:54 +04.

Sunshine

In September, the average sunshine in Ruwi is 11.7h.

UV index

The average daily maximum UV index in September is 8. A UV Index reading of 8 to 10 represents a very high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 8 leads to the following instructions:
Ensure you're protected; unprotected eyes and skin can get hurt in moments. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.