Wind of 120 days

Strong summer wind in the east and southeast of the Iranian Plateau

The 120-day wind or wind of 120 days is a strong summer wind occurring from late May to late September in the east and southeast of the Iranian Plateau, particularly the Sistan Basin. It is so called because it lasts for four months. The typical wind speed is 30–40 kilometres per hour (19–25 mph) or less, but it can occasionally exceed 100–110 kilometres per hour (60–70 mph). Strong speeds are caused by the topography surrounding the region. The wind moves fairly consistently south-to-southeastward; along with the shamal, it is one of two well-known winds in Iran.

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