Climates with no more than two dry months ( defined as having less than, average precipitation, same as per K�ppen ) are classified " Ar ", while others are classified " Aw " if the dry season is at the time of low sun / short days or " As " if the dry season is at the time of high sun / long days . There was no specific monsoon climate identifier in the original scheme, but " Am " was added later, with the same parameters as K�ppen's ( except that at least three months, rather than one, must have less than 60 mm average precipitation ).
