Gilan has a humid subtropical climate with by a large margin the heaviest rainfall in Iran: reaching as high as 1,900 millimetres in the southwestern coast and generally around 1,400 millimetres. Rasht, the capital of the province, is known internationally as the "City of Silver Rains" and within Iran as the "City of Rain". Rainfall is heaviest between September and December because the onshore winds from the Siberian High are strongest, but it occurs throughout the year though least abundantly from April to July.
Pictures below show the nature of Gilan province on May.
 











































By ISNA