September marks the onset of a relieving transition from the blazing summer to a softer autumn in
Asyut. Temperatures see a significant drop, stepping down to a more tolerable high of 34.2°C (93.6°F). The moisture levels continue to stay low, sustaining the city's arid climate. The amount of sunshine also begins to reduce in step with a decreased duration of daylight. While the UV index falls by two points, the bright sunlight still calls for sun safety measures.
Temperature
Transitioning from
August to September, Asyut observes an average high-temperature of a hot 34.2°C (93.6°F), differing subtly from the previous month. Asyut, in the heat of September, registers a significant plunge to a mean of 19.6°C (67.3°F) during the nights.
Heat index
The heat index value for September is estimated at a sweltering 36°C (96.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Understand that the heat index values take into account shaded locations and mild 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 'feels like' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to 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 cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
The average relative humidity in September is 40%.
Rainfall
In Asyut, rain does not fall in
January,
March,
May through
December.
Daylight
The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 6:34 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:42 pm EEST.
Sunshine
In September, the average sunshine is 11h.
UV index
In Asyut, the average daily maximum UV index in September is 10. A UV Index estimate of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 10 during September, leads to the following recommendations:
Without constant care, eyes and skin might suffer damage in a short time. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Even on overcast days, apply and frequently reapply a sunscreen with SPF 30 or more, specifically after a swim or outdoor workout.