This study uses IR-images from NOAA obtained by an AVHRR scanner and 'in situ' data used for monitoring sea surface temperature (SST) of the White Sea in June 1994. The spatial variability of the SST is characterized by bimodal regime. The maximum is observed in the images obtained at about 13 GTM. The spatial distribution of the SST is related to peculiarities in the semidiurnal tides dominant in the White Sea.