Temperature records from the mouth of Godthaab fjord, west Greenland, during 1942–1944, show a cooling of the water over these three years, particularly marked in the first half of the year. The temperature history of the west Greenland current is traced by means of available records since 1883. It is found that warmer conditions existed during the decade of 1880, followed by a colder period up to about 1920, when the present warm period began. The peak of the present warm period appears to have been reached in the middle 1930's, and it is possible that the cycle is about to return to colder conditions, with a weakening of the Atlantic component of the current.