Islamabad is situated at 33.43°N 73.04°E by the northern edge of Pothohar Plateau. Its elevation is 540 meters. Ghakar city that used to exist between Islamabad and Rawalpindi still exists. It is also called the twin city of Rawalpindi.
The city of Islamabad is stretched to an extent of 906 square kilometers. A 2,717 square kilometers of area is known as the “specified area”, within the Margala Hills. The southern part of the city is undulating plain. It drains to the Kurang River, where Rawal Dam is located.
The atmosphere of Islamabad has a muggy subtropical atmosphere , with five seasons: Winter (November–February), Spring (March and April), Rainy Monsoon (July and August), Summer (May and June) and Autumn (September and October). The most smoking month is June. The wettest month is July, with overwhelming rainfalls and night rainstorms with the likelihood of torrent and flooding. The coolest month is January. Islamabad's small scale atmosphere is controlled by three counterfeit supplies: Rawal, Simli, and Khanpur Dam. The last is situated on the Haro River close to the town of Khanpur, around 40 kilometers (25 mi) from Islamabad. Simli Dam is 30 kilometers (19 mi) north of Islamabad. 220 sections of land (89 ha) of the city comprises of Margalla Hills National Park. The temperatures range from 13 °C (55 °F) in January to 38 °C (100 °F) in June. The most elevated recorded temperature was 46.6 °C (115.9 °F) on 23 June 2005 while the least temperature was −6 °C (21.2 °F) on 17 January 1967. The city has recorded snowfall. On 23 July 2001, Islamabad got a record-breaking 620 mm (24 in) of precipitation in only 10 hours. It was the heaviest precipitation in Islamabad in the previous 100 years and the most astounding precipitation in 24 hours too.