What's the climate like in Wenzhou?

Wenzhou has a subtropical monsoon climate, and the northerly winds from the mainland prevail in winter, with low temperature, less rain and less evaporation of humidity. In summer, the south wind blowing from the ocean prevails, accompanied by heavy rain and high temperature. The weather is changeable in spring, and it often rains continuously. In autumn, the atmosphere is relatively stable, and "crisp autumn" weather is common. The general characteristics of the climate throughout the year are: moderate temperature and abundant heat; Adequate rain and moist air; The four seasons are distinct and the monsoon is remarkable; The climate is diverse and disasters occur frequently.

(a) moderate cold and hot, rich in heat.

The average annual temperature in Wenzhou is around 18℃, which is the most suitable climatic condition for human activities. According to the daily and hourly temperature records of Wenzhou Meteorological Observatory over the years and the requirements of people's cold and hot comfort, the warm and comfortable period (10-28℃) lasts for 9 months every year, and the appearance hours can reach 6500 hours, accounting for 74% of the total hours in the whole year. The cumulative active temperature of > 0℃ throughout the year is about 6500℃, and the frost-free period is 275 days, which is the region with the richest heat resources in the province.

(2) Sufficient rain and moist air.

The average annual rainfall in Wenzhou is about 1800 mm, which is much more than that in China (500- 1500 mm). It is not only the region with the richest precipitation resources in the province, but also the rainy region in China. Compared with the same latitude area in the world, the rainfall is particularly prominent. Because other countries in this latitude area of the earth are mostly occupied by arid and desert climate, the annual rainfall in most areas is below 100 mm, so the annual rainfall in our city is several times higher than the average level in the same latitude.

Water vapor in the atmosphere is the cause of rain caused by cloud formation, which produces many colorful and changeable clouds. Our city is famous for being warm and rainy, and the water vapor content in the air is also extremely rich. The annual average water vapor pressure reaches 18- 19 hectopascals, ranking first in the province, and the annual average relative humidity is about 80%, especially in mountainous areas and islands, which is also one of the regions with the highest relative humidity in the province.

(3) The monsoon is remarkable and the four seasons are distinct.

Monsoon is a phenomenon that the prevailing wind direction changes significantly with the seasons. In winter, the cold Asian inland forms a strong Mongolian high, the warm ocean is a low pressure, and the northerly wind prevails in Wenzhou. On the contrary, in summer, the ocean is high and the wind blows from the ocean to the mainland, and the southerly wind (or easterly wind) prevails in our city. With the alternation of wind direction and season, the main climatic factors such as temperature, precipitation and temperature also change obviously every year. Winter is dry and cold, and summer monsoon is wet and rainy. In autumn, a steady northerly wind blows everywhere, and the weather is fine. Monsoons alternate frequently between spring and summer, with more rain and complicated climate change.

Wenzhou has four seasons: spring, summer, autumn and winter, each lasting more than two months. In countries with the same latitude as Wenzhou, the average temperature in Leng Yue is around 15℃, and most of them are only in spring, summer and autumn, while the winter in the western plateau of China is long and there is no midsummer. Compared with latitude, the changes of four seasons are very obvious.

(d) There are various climatic types and frequent weather disasters.

The city has a complex terrain, with many islands, oceans, plains, basins, hills and mountains, forming various types of climatic conditions, which is conducive to the development of diversified businesses and the comprehensive development and utilization of transportation, tourism and energy. However, due to the change of monsoon activity, the distribution of light, heat and water is uneven in time and reality, and the changes of wind, rain and snow are obvious. Disasters such as typhoons, floods, droughts, strong winds, hail, low temperature and rainy weather occur from time to time, which have a great impact on industrial and agricultural production and the national economy and people's livelihood. Wenzhou has a subtropical monsoon climate, and the northerly winds from the mainland prevail in winter, with low temperature, less rain and less evaporation of humidity. In summer, the south wind blowing from the ocean prevails, accompanied by heavy rain and high temperature. The weather is changeable in spring, and it often rains continuously. In autumn, the atmosphere is relatively stable, and "crisp autumn" weather is common. The general characteristics of the climate throughout the year are: moderate temperature and abundant heat; Adequate rain and moist air; The four seasons are distinct and the monsoon is remarkable; The climate is diverse and disasters occur frequently.

(a) moderate cold and hot, rich in heat.

The average annual temperature in Wenzhou is around 18℃, which is the most suitable climatic condition for human activities. According to the daily and hourly temperature records of Wenzhou Meteorological Observatory over the years and the requirements of people's cold and hot comfort, the warm and comfortable period (10-28℃) lasts for 9 months every year, and the appearance hours can reach 6500 hours, accounting for 74% of the total hours in the whole year. The cumulative active temperature of > 0℃ throughout the year is about 6500℃, and the frost-free period is 275 days, which is the region with the richest heat resources in the province.

(2) Sufficient rain and moist air.

The average annual rainfall in Wenzhou is about 1800 mm, which is much more than that in China (500- 1500 mm). It is not only the region with the richest precipitation resources in the province, but also the rainy region in China. Compared with the same latitude area in the world, the rainfall is particularly prominent. Because other countries in this latitude area of the earth are mostly occupied by arid and desert climate, the annual rainfall in most areas is below 100 mm, so the annual rainfall in our city is several times higher than the average level in the same latitude.

Water vapor in the atmosphere is the cause of rain caused by cloud formation, which produces many colorful and changeable clouds. Our city is famous for being warm and rainy, and the water vapor content in the air is also extremely rich. The annual average water vapor pressure reaches 18- 19 hectopascals, ranking first in the province, and the annual average relative humidity is about 80%, especially in mountainous areas and islands, which is also one of the regions with the highest relative humidity in the province.

(3) The monsoon is remarkable and the four seasons are distinct.

Monsoon is a phenomenon that the prevailing wind direction changes significantly with the seasons. In winter, the cold Asian inland forms a strong Mongolian high, the warm ocean is a low pressure, and the northerly wind prevails in Wenzhou. On the contrary, in summer, the ocean is high and the wind blows from the ocean to the mainland, and the southerly wind (or easterly wind) prevails in our city. With the alternation of wind direction and season, the main climatic factors such as temperature, precipitation and temperature also change obviously every year. Winter is dry and cold, and summer monsoon is wet and rainy. In autumn, a steady northerly wind blows everywhere, and the weather is fine. Monsoons alternate frequently between spring and summer, with more rain and complicated climate change.

Wenzhou has four seasons: spring, summer, autumn and winter, each lasting more than two months. In countries with the same latitude as Wenzhou, the average temperature in Leng Yue is around 15℃, and most of them are only in spring, summer and autumn, while the winter in the western plateau of China is long and there is no midsummer. Compared with latitude, the changes of four seasons are very obvious.

(d) There are various climatic types and frequent weather disasters.

The city has a complex terrain, with many islands, oceans, plains, basins, hills and mountains, forming various types of climatic conditions, which is conducive to the development of diversified businesses and the comprehensive development and utilization of transportation, tourism and energy. However, due to the change of monsoon activity, the distribution of light, heat and water is uneven in time and reality, and the changes of wind, rain and snow are obvious. Disasters such as typhoons, floods, droughts, strong winds, hail, low temperature and rainy weather occur from time to time, which have a great impact on industrial and agricultural production and the national economy and people's livelihood.