The climate of Lower Silesia is the warmest in Poland. The winds blow from the West, and more rarely masses of warm air from the area of the Mediterranean and the Azores occur. The plants growing season in Lower Silesia lasts 225 days, which means it is the longest in Poland – as soon as in March we can see yellow forsythias blooming. Characteristic for the region are continual passes of low pressure bringing periods of a few days of rainy and cloudy weather. The rains are the most intensive in July, and the annual rainfall is 600 mm. The winters on the lowland are most often without snow, but in the mountains, in higher parts of the Sudety Mountains, the snow remains for 200 days a year and sometimes stays till April.