text: The Czech Republic belongs to the mild climatic region. January is the coldest month (on average -0.2 °C), July the warmest one (on average 9.5 °C). The total radiant energy per year varies from 3670 MJ.m-2 in the north to 4600 MJ.m-2 in the southeast. The driest area, around Zatec, has an average annual rainfall of 410 mm, whereas near Jizerske hory in the mountain region the average annual rainfall amounts to 1705 mm. The yearly average number of days with snow is less than 40 in the low-land regions and up to 120 days in the mountains.