Abstract
Concerning the distribution of the air temperature in summer in Miyagi prefecture, the author found many exmaples of the pattern as is shown in the Figure, with lower temperature in the coastal region. And the temperature gradient form the coast toward the inland was investigated in relation to the diurnal changes. The author observed diurnal variation of air temperature at several places in summer 1964. In the coastal region, the air temperature first rises by a few degrees, then remains constant after the breeze begins to blow. This temperature continues as long as the sea breeze blows. Therefore, the air temperature becomes higher according to the distance from the coast, because the sea breeze is later to advance toward inland.
Thus, the gradient twoards inland mentioned above can be understood from the view-point of the regional difference of diurnal variation of the air temperature.
