|Rice Field.Mzandaran & Gilan Provinces|
Four Season Climate
Iran has a diverse four season climate. The temperature difference of two locations in Iran at one point in time reaches to 50° C. In winter, one may swim in an outdoor pool or in the southern shore of the Persian Gulf, while the other is skiing in Tehran or in the western mountains. In general, Iran has an arid climate in which most of the relatively scant annual precipitation falls from October through April. In most of the country, yearly precipitation averages 25 centimeters or less. The major exceptions are the higher mountain valleys of the Zagros and the Caspian coastal plain, where precipitation averages at least 50 centimeters annually. In the western part of the Caspian, rainfall exceeds 100 centimeters annually and is distributed relatively evenly throughout the year. In the northwest, winters are cold with heavy snowfall and subfreezing temperatures during December and January. Spring and fall are relatively mild, while summers are dry and hot. In the south, winters are mild and the summers are very hot, having average daily temperatures in July exceeding 38° C (100° F). The Persian Gulf (south) has a hot climate. Temperatures are high, though winters may be quite cool at the north-western extremities. Humidity is high and dust storms and haze occur frequently in summer.