Average Weather in Islamabad Pakistan
In Islamabad, the summers are sweltering, humid, wet, and clear and the winters are short, cold, and partly cloudy. Over the course of the year, the temperature typically varies from 38°F to 100°F and is rarely below 33°F or above 107°F.
The hot season lasts for 3.0 months, from May 5 to August 5, with an average daily high temperature above 92°F. The hottest day of the year is June 12, with an average high of 100°F and low of 75°F.
The cool season lasts for 2.9 months, from December 4 to March 1, with an average daily high temperature below 70°F. The coldest day of the year is January 9, with an average low of 38°F and high of 62°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Islamabad, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Islamabad begins around May 4 and lasts for 6.5 months, ending around November 20. On September 14, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 98% of the time, and overcast or mostly cloudy 2% of the time.
The cloudier part of the year begins around November 20 and lasts for 5.5 months, ending around May 4. On February 17, the cloudiest day of the year, the sky is overcast or mostly cloudy 42% of the time, and clear, mostly clear, or partly cloudy 58% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Islamabad varies very significantly throughout the year.
The wetter season lasts 2.5 months, from June 24 to September 9, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 55% on July 27.
The drier season lasts 9.5 months, from September 9 to June 24. The smallest chance of a wet day is 5% on November 8.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 55% on July 27.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Islamabad experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 12 months, from November 20 to November 6, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 30, with an average total accumulation of 7.4 inches.
The rainless period of the year lasts for 2.0 weeks, from November 6 to November 20. The least rain falls around November 13, with and average total accumulation of 0.5 inches.
Average Monthly Rainfall
The length of the day in Islamabad varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 55 minutes of daylight; the longest day is June 21, with 14 hours, 24 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:56 AM on June 12, and the latest sunrise is 2 hours, 17 minutes later at 7:13 AM on January 8. The earliest sunset is at 4:59 PM on December 4, and the latest sunset is 2 hours, 23 minutes later at 7:22 PM on June 30.
Daylight saving time (DST) is not observed in Islamabad during 2017.
Sunrise & Sunset with Twilight
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
Islamabad experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.6 months, from June 14 to October 1, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is August 10, with muggy conditions 95% of the time.
The least muggy day of the year is December 17, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.The average hourly wind speed in Islamabad does not vary significantly over the course of the year, remaining within 0.5 miles per hour of 2.8 miles per hour throughout.
Average Wind Speed
The predominant average hourly wind direction in Islamabad varies throughout the year.
The wind is most often from the west for 2.1 months, from April 23 to June 26, with a peak percentage of 36% on June 14. The wind is most often from the south for 1.7 months, from June 26 to August 16, with a peak percentage of 45% on July 23. The wind is most often from the east for 3.5 months, from August 16 to November 30 and for 4.1 months, from December 19 to April 23, with a peak percentage of 42% on September 6.
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.8 months, from April 28 to July 23, with an average daily incident shortwave energy per square meter above 7.0 kWh. The brightest day of the year is June 10, with an average of 8.0 kWh.
The darker period of the year lasts for 3.3 months, from November 10 to February 18, with an average daily incident shortwave energy per square meter below 4.0 kWh. The darkest day of the year is December 23, with an average of 2.9 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Islamabad are 33.721 deg latitude, 73.043 deg longitude, and 1,896 ft elevation.
The topography within 2 miles of Islamabad contains very significant variations in elevation, with a maximum elevation change of 1,634 feet and an average elevation above sea level of 1,999 feet. Within 10 miles contains very significant variations in elevation (3,711 feet). Within 50 miles also contains extreme variations in elevation (9,052 feet).
The area within 2 miles of Islamabad is covered by artificial surfaces (71%) and trees (29%), within 10 miles by trees (46%) and artificial surfaces (27%), and within 50 miles by bare soil (38%) and cropland (33%).
This report illustrates the typical weather in Islamabad, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Benazir Bhutto International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Islamabad.
At a distance of 13 kilometers from Islamabad, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Islamabad according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.