September weather forecast
Islamabad, Pakistan

September in Islamabad is defined by the gradual reduction in rains and slight cooling down of temperatures. The transition from monsoon to post-monsoon is evident from the reducing rainfall and cloud cover. Dryer weather allows for more hours of sunshine, lighting up the city in the warm glow. The consistent wind provides relief from the warming temperatures. September serves as the curtain call for Islamabad's monsoon season.

Temperature

An average high-temperature of a tropical 33.8°C (92.8°F) marks September, exhibiting a close resemblance to the conditions in August. September in Islamabad generally records an average low-temperature of 23.1°C (73.6°F).

Heat index

In September, the heat index is calculated to be a fiery hot 36°C (96.8°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In September, the average relative humidity is 45%.

Rainfall

In Islamabad, in September, it is raining for 10.5 days, with typically 45mm (1.77") of accumulated precipitation. Throughout the year, there are 119.8 rainfall days, and 524mm (20.63") of precipitation is accumulated.

Daylight

In September, the average length of the day in Islamabad is 12h and 23min.
On the first day of the month, sunrise is at 5:41 am and sunset at 6:33 pm. On the last day of September, sunrise is at 6:01 am and sunset at 5:53 pm PKT.

Sunshine

The average sunshine in September is 11.2h.

UV index

The average daily maximum UV index in September in Islamabad is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Guard against overexposure. Protection from sun-induced harm is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.