Weihai Climate
Impacted by the sea, climate here comes with varied four seasons and the onset and retreat of monsoon. In varying seasons, the climate here is different. Here is some information about Weihai climate in four seasons.
Spring (March-- May)
In this time, warm air becomes active, but there are still cold air forces which cause alternating high and low pressure flow movement, so that varied climate forms. From April to May, the northern and southern heavy wind appears alternately so this two months suffer the most wind with the strongest force. Because of a little warm moist air and strong wind, spring drought is often caused.
Summer (June—August)
Due to the adjustment of marine function, the temperature is low, especially from June to July, lower 3-4 ℃ than the same latitude inland areas. And it is lower 1 ℃ then those in the same latitude in August, together with cool and pleasant climate, Weihai city become a famous summer resort. Of course, the highest temperature throughout the year is still August, and the highest temperature in extreme appeared in July, and August. Due to the high pressure strengthening in North Pacific Ocean, this period sees heavy humidity and rainfall which accounts for 59% of the annual rainfall. Frequent heavy rain episodes mainly concentrate in early July, August and September, which often form floods. But some years, due to the control of Pacific high pressure, sweltering and hot days come as well, and short-term dried summer forms. Owing to atmospheric circulation which leads the Pacific typhoon goes north, so that heavy rains and winds are often caused.
Autumn (September—November)
Cold air becomes active in early autumn, so the early September sees rainy days or even experience typhoon. Rainfall in fall accounts for 23% of the total rainfall in a year, mostly concentrating September. The whole autumn temperature keeps high, especially September, and compared with the same latitude inland regions, it’s 1 to 2 ℃ higher from October and November. Since October, more lovely weather with the best visibility comes, together with autumn drought. From mid-November, Mongolia high pressure begins and cold air starts to be active, every ten-day temperature dropped to vary the size of 3 ℃ rapidly. The north wind arrives more and the winter monsoon appears obviously.
Winter (December—February)
Controlled by the strong Mongolia high pressure which brings constantly southward cold air, winter sees dry climate and cold northerly winds. Known as “snow nest” with Yantai, Weihai sees the coldest month all the year round in January. The extreme minimum temperature usually appears in the January or early February. The whole winter, temperature here is 2 ℃ higher than the same latitude inland regions, with slight temperature difference between day and night. Rainfall now is the least in the whole year, only accounting for 5%. Since late December, due to the effect of marine function, snowy and rainy weather arrives, with three times more than the same latitude interior regions.
