Seasonal average temperature and precipitation in weihai.

Weihai belongs to the continental climate of north temperate monsoon, with obvious seasonal changes and monsoon advance and retreat. Compared with the inland areas at the same latitude, Weihai has the characteristics of abundant rainfall, moderate annual temperature and mild climate. The continental degree of Weihai is 54. 1%. Because it is close to the Yellow Sea, it is cold in spring and cool in summer, warm in autumn and warm in winter, with small temperature difference between day and night, long frost-free period and mild temperature.

Warm air becomes active in spring (March-May), but cold air still has a considerable influence, resulting in frequent movement and alternation of high and low pressure systems and changeable climate. From April to May, strong winds alternate from north to south, which is a month with strong winds all year round. In spring, the temperature is low, rising slowly, which is 2-3℃ lower than that in inland areas of the same latitude, and the seasonal delay is about half a month. Because warm and humid air cannot be transported in large quantities.

In summer (June-August), due to the regulation of the ocean, the temperature is low. From June to July, it is 3-4℃ lower than that in inland areas of the same latitude, and it is 65438 0℃ lower in August. The cool and pleasant climate makes Weihai a famous summer resort. The highest temperature is in August, and the extreme highest temperature appears in July and August. As the Pacific high strengthens northward, the summer monsoon begins. Therefore, there is much precipitation and high humidity, and the precipitation accounts for 59% of the whole year. At the end of June and early July, it entered the flood season and ended in early September. Heavy rains are concentrated in July, August and early September, and frequent heavy rains often lead to floods. However, in some years, due to the Pacific high pressure controlling Shandong Peninsula, the weather is hot, humid and sultry, resulting in short-term drought. In addition, due to the guidance of atmospheric circulation, Pacific typhoons will move northward in some years, which will generally cause heavy rain and windy weather.

In autumn (September-165438+1October), the cold air in the north began to be active, but the warm and humid airflow still had some influence, so there was still a lot of precipitation in early September, and rainy weather also appeared from time to time, which may be attacked by typhoons. The total precipitation in autumn accounts for 23% of the whole year, mostly concentrated in September. From late September to 65438+ 10, the influence of cold air in the north was strengthened. Compared with the inland areas of the same latitude, it is slightly higher in September, with the height of 10-11-2℃. From 10, autumn is crisp, sunny and the visibility is the best, but autumn drought often occurs.

Winter (1February-February) is controlled by strong Mongolian high pressure, cold air continuously erupts to the south, and the climate is dry and cold with northerly winds. 65438+ 10 is the most Leng Yue in the whole year, and the extreme minimum temperature of the whole year generally appears in 65438+ 10 or early February. The temperature in the whole winter is about 2℃ higher than that in the inland areas of the same latitude, and the temperature difference between day and night is small. Seasonal precipitation is the least, accounting for 80% of the whole year.