What was the weather like at the end of Dalian 10?

Dalian, a world-famous summer resort, belongs to the continental climate of north temperate monsoon, and is the warmest place in northeast China. Annual average temperature 10? 0? 2C, the hottest in August, with an average temperature of 24? 0? 2C, the maximum daily temperature exceeds 30? 0? The days of 2C are only 10 to 12 days. 1 is the coldest month with an average temperature of -5? 0? 2C, the extreme minimum temperature can reach -2 1? 0? 2C or so, frost-free period 180-200 days. The average annual precipitation is 950 mm, of which 60%-70% is concentrated in summer, mostly in the form of heavy rain, and the night rain is more than the day rain.

The tourist season in Dalian begins with the Huaihua Fair and the Export Commodities Fair in late May and ends with the International Fashion Festival in early September. Dalian was almost razed to the ground by tourists during this period. In the first half of September, the sea turned cold and the crowds faded, but the beauty of Dalian did not fade with the weather and popularity. When the tourists leave, the fish will come back. September -65438+ 10 is a good time for fishing by the sea. If it is a little colder, the ice lamp in Bingyugou will turn on, or go hunting in Jinshitan Hunting Ground, which can be regarded as a leisure program to visit Dalian in the off-season.

Dalian is located in the mid-latitude zone of the northern hemisphere, and the solar radiation varies greatly throughout the year. The atmospheric circulation is dominated by westerlies and subtropical systems. Coupled with the influence of geographical environment, there are mountains on one side and sea on the other. Except for the obvious continental climate characteristics in the northern mountainous areas, most areas have certain maritime climate characteristics, although it is not enough for maritime climate conditions. The main features are distinct seasons, mild climate, moist air, concentrated precipitation, obvious monsoon and strong wind.

The annual average temperature is 8 ~ l 1℃, decreasing from south to north, making it the warmest region in Northeast China. It is the hottest in August and the coldest in 65438+ 10. The annual extreme maximum temperature is 37℃. The annual extreme minimum temperature is -23℃ in the south and -29℃ in the north. The annual precipitation is 550 ~1000 mm, increasing from southwest to northeast. The precipitation center is located in the northern mountainous area of Zhuanghe County, with an annual precipitation of more than 950 mm, uneven distribution in four seasons, and 60 ~ 70% of precipitation is concentrated in summer. The region belongs to the East Asian monsoon, with southerly winds prevailing in summer and northerly winds prevailing in winter. The annual average wind speed is 3 ~ 6m/s, which is one of the areas with higher wind speed in Northeast China. The maximum wind speed is above 40m/s. The number of windy days (referring to instantaneous wind speed ≥ 17m/s) is 20-40 days in the north, 50-80 days in the south and 173 days in the islands of Changhai County. The number of foggy days in the whole year (visibility ≤ 1km) is 35-60 days in the eastern coast and 5-20 days in other areas. The annual average relative humidity is 64 ~ 72%. The annual evaporation is1300 ~ 2000mm. The annual sunshine hours are about 2700 hours, and the annual sunshine percentage is 60 ~ 65%. The frost-free period is 170 ~ 190 days.

Spring (March to May):

Dry, less rain, quick recovery. This season, warm air becomes active, cold air gradually weakens, and the weather quickly warms up. From late March to early May, the ten-day average temperature can increase by 9 ~ L2℃, and the ten-day average increase rate can reach 2 ~ 3℃. In late March, the daily average temperature can be stabilized above O℃, the soil is generally thawed, and some roads begin to frost. At the end of April, the daily minimum temperature in most areas can reach above O℃. From late April to early May, the final frost ended from south to north, and the first thunder was audible. However, in some years, there is a phenomenon of "late spring cold". When the cold wave strikes in spring, the extreme minimum temperature can still drop to -4 ~-6℃ in early April. From the end of March to the beginning of April, it turned from snow to rain, and the seasonal precipitation was 70 ~ 90 mm, accounting for a little more than 10% of the annual precipitation. Due to less precipitation and large evaporation, it is easy to cause drought. In some years, there are heavy spring rains and even heavy rains. The "ten-year September drought" mentioned by the masses is a vivid portrayal of the spring climate characteristics in this area. This season, the wind speed is relatively high, and the north-south wind alternates frequently, and the southerly wind is dominant in the later period. The number of windy days in the whole year is 10 ~ 15 days in the south (32 days in the island) and 4 ~ 9 days in the north, accounting for 20% of the number of windy days in the whole year. The maximum wind speed is 34m/s in the south and 24m/s in the north.

Summer (June to August):

Wet and rainy, the temperature is slightly higher. The average monthly temperature in this season is above 19℃, and it is the hottest in August, which is 24℃. The maximum daily temperature is 32 ~ 37℃. The high temperature period is short, and the longest continuous days when the daily maximum temperature is greater than or equal to 30℃ are generally 4 ~ 6 days, and the longest is 10 ~ 12 days, mostly from late July to early August. The highest ground temperature is 56 ~ 66℃. This season is humid and foggy, and the monthly average relative humidity is above 70%. There is a lot of fog on the east coast, and the foggy days are generally around 25 days, up to 46 days (Dalian, island). July is a foggy month all year round, followed by June and less in August. The longest continuous days of fog is 8 ~ 10 days. This season is rainy and rainy, with concentrated precipitation. Seasonal precipitation is 350 ~ 700 mm, accounting for 60 ~ 70% of the annual precipitation. The number of seasonal precipitation days is 30 ~ 40 days. Heavy rains are mainly concentrated in July and August. The maximum daily precipitation is above 100 mm in all parts of the country, above 250 mm in Zhuanghe area, and 60 ~ 75 mm in 1 hour. Thunderstorms prevail this season, and hail is often accompanied in early summer and late summer. Southeast winds prevail this season, and the wind speed is smaller than other seasons. From mid-July to late August, there are 1 ~ 2 typhoons every year on average, and the influence degree varies with the typhoon path and intensity.

Autumn (September ~165438+1October):

Clouds and rains plummeted and the climate was cool. This season, cold air activities began to strengthen, the strength of warm air weakened day by day, clouds and rain plummeted, and the temperature dropped. The expressions of "crisp autumn air" and "an autumn rain, a cold" are excellent descriptions of the autumn climate characteristics in this area. Due to the adjustment of the ocean, the temperature drops slowly. From the end of September to the middle of 65438+1October, the first frost appeared from north to south, the thunderstorm stopped in late October of 65438+1October, and the first ice appeared from north to south. In this season, the north and south winds alternate frequently, and the wind speed gradually increases, and the north wind is the main wind in the later period. The number of seasonal precipitation days is 12 ~ 15 days. The seasonal precipitation is 80 ~ 100 mm, accounting for a little more than 10% of the annual precipitation. Individual years have the characteristics of late summer because the rainy season ends late, and there may be heavy rain. This season is the season with the most hail in the whole year, mostly small hail, with occasional heavy hail.

Winter (12 ~ February):

Rain and snow are scarce, and dry cold wind is strong. This season lasts the longest, reaching five months. Under the long-term control of the cold air mass in the north, the air is dry and the temperature is low. 65438+ 10 is the coldest month, with monthly average temperature of -3 ~- 10℃ and extreme minimum temperature of-17 ~-25℃. Guiyunhua in Zhuanghe County once reached -29℃. The daily minimum temperature of the whole season, which is lower than or equal to-10℃, appears intermittently from the end of 10 to the middle of March of the following year, and the number of days in the whole season is 20-45 days in the south and 45-85 days in the north. The daily minimum temperature below or equal to -20℃ is rare in southern China, and it appears intermittently from late February to late February in northern China 18. The number of days in the whole year is 2-4 days, and osmanthus is the most, which can reach 9 days. There are four cold waves on average this season. 165438+1In the first half of October, it turned from rain to snow from north to south, and the soil froze. 65438+ The ground froze in early February. The maximum frozen soil depth is 70 ~ 95cm in the south and 100 ~ 120cm in the north. There is little precipitation in this season, and the seasonal precipitation is 50-80mm, accounting for less than 65,438+00% of the annual precipitation. Snowfall above 10 mm is rare. The maximum snow depth is generally 20 ~ 30 cm, and the deepest in Dalian has reached 38 cm. The north wind prevails this season, and the weather is sunny and dry. The number of sunny days in each month is 10 ~ 15. The number of gale days with magnitude 6 and above is 10 ~ 12 days per month, and the maximum is 16 days in June. The maximum wind speed has reached more than 40 meters per second, which is the strongest season in the whole year.