September weather forecast
Helwan, Egypt

September, the first month of the autumn in Helwan, is still a tropical month, with an average temperature fluctuating between 32.6°C (90.7°F) and 19.8°C (67.6°F).

Temperature

The start of September sees the average high-temperature at a still tropical 32.6°C (90.7°F), showing little difference from August's 34.6°C (94.3°F). Helwan registers a significant reduction from the day's heat, with an average temperature drop to a comfortable 19.8°C (67.6°F) in September.

Heat index

For September, the heat index is appraised at a sweltering 37°C (98.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity in Helwan is 56%.

Rainfall

In Helwan, rain does not fall in May through October.

Daylight

In Helwan, the average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:32 am and sunset at 7:17 pm. On the last day of September, in Helwan, sunrise is at 6:47 am and sunset at 6:41 pm EEST.

Sunshine

In September, the average sunshine in Helwan is 9.4h.