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Rawalpindi features a humid subtropical climate (Köppen: Cwa) with long and hot summers, a monsoon and short, mild and wet winters. Its climate is classified as very similar to its twin city Islamabad, but the geographical location and extreme urbanization of Rawalpindi has led to weather and climatic conditions that are notably different from its twin. Rawalpindi's weather has historically been known to change rather quickly due to its proximity to Himalayas and the Pir Panjal Range. These mountains not only influence the weather of the city, but also provide great recreation during the hot months. Furthermore, Its warm comfortable mean annual temperature of attracts people to live here permanently from all over Pakistan. The average annual rainfall is abundant at , most of which falls in the monsoon season. However, frontal cloud bands also bring significant rainfall in the winter. In summers, June is the hottest with record maximum temperature at a blistering recorded on 13 June 1953.〔http://www.met.gov.pk/cdpc/islamabad.htm Islamabad (During 1931-2006)〕 On the other hand, January is the coldest month of the year when temperature can drop to a minimum in the winter recorded on 17 January 1967. Throughout the year, Rawalpindi and Islamabad experience an average of about 90 thunderstorms, which is the highest frequency of thunderstorms in Punjab province of any plane station. In fact, most rainfall in the city is accompanied by a thunderstorm with peak activity experienced in August. Record rainfall was experienced in the year 2013 at a massive mostly due to an unusually wet monsoon season. On a typical day, the city hosts windy afternoons (+), but usually calm to light breeze (Beaufort scale) wind conditions are observed after midnight. The mean annual wind speed of Rawalpindi is roughly at 14 m height. Moreover, just a few kilometers southwest of Rawalpindi, the potential power generation has been identified by U.S. Aid to be between marginal to good ( to ) at 50 m height. ==Prevailing conditions== Western Disturbance, Monsoon and localized convection currents during the summers are responsible for changing weather conditions in Rawalpindi. Following is a list and conditions provided for the change in weather conditions. *Western Disturbances occur almost every month in the city, but peaks during the winter months. Not only do these disturbances decrease day and night temperatures, but provides the city with rainfall during its dry months. However, by the time these winds reach Rawalpindi, these westerly waves are quite weak in intensity resulting in only light to moderate amounts of rainfall. Heavy rainfall from these disturbances are rare. Nonetheless, February 2013 experienced record rains accumulating to *Monsoon result in the greatest amount of rainfall in the city and reduces the excruciating heat of the relatively dry early summer months. During late June, July, August, and early September southeasterly winds with the intensity of fresh breeze bring along the monsoon clouds and push them against the mighty Himalayas. Most often, significant rainfall in Rawalpindi doesn't occur until these moisture laden air interact with western disturbances, producing powerful supercell thunderstorms accompanied with heavy winds, lightning and heavy to very heavy rainfall. Furthermore, these storms can last from 20 minutes to several hours in duration. The highest dew point is experienced during this time of the year with extremely high heat indices. *Dust storms occur most frequently during the dry heat of May and June, but may well also be occur during the months of late March and April. Dust storms in Rawalpindi are most often accompanied by thunderstorms producing squalls and lightning. Visibilities drop below 100 meters in extreme cases with wind speeds surpass a fierce .〔(Weather History for Islamabad, Pakistan | Weather Underground )〕 Rainfall from these storms is generally low to moderate. *Continental Air prevails during the dry periods of the year with ample sunshine and partly cloudy to clear skies. As high pressure is established atmosphere becomes stable result in no precipitation until a western disturbance intervenes. Strong breeze from westerly direction blow during the day, while nights are calm during this time.〔(Weather History for Islamabad, Pakistan | Weather Underground )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Climate of Rawalpindi」の詳細全文を読む スポンサード リンク
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