Is it hot in Hainan all year round?

Hainan Island has a tropical monsoon maritime climate. The basic characteristics are: the four seasons are not clear, there is no heat in summer, no cold in winter, the temperature in annual range is small, and the annual average temperature is high; Dry season and rainy season are obvious, winter and spring are dry, summer and autumn are rainy, and there are many tropical cyclones; Light, heat and water resources are abundant, and climate disasters such as wind, drought and cold are frequent. The annual average temperature is 22.5-25.6℃, the annual sunshine hours are 1780-2600 hours, the total solar radiation is 4500-5800 MJ/m2, and the annual precipitation is 1500-2500mm (about 1500-2500mm in the western coastal areas).

Hainan Island is located in the south of the Tropic of Cancer, and the sun can shine for a long time. The annual sunshine hours in Hainan are only about 1750 hours, except for the central mountainous areas, where there are many clouds. More than 2000 hours in most other areas, 2400-2600 hours in the western and southern regions. Generally, the sunshine hours are the most in July, the least in February, the most in summer and the least in winter.

The average annual temperature in most parts of Hainan Island is between 22.5 and 25.6 degrees, slightly lower than 23 degrees in the central mountainous area and slightly higher than 25 degrees in the south and west. The isotherm is curved to the south, increasing from the central mountainous area to the coast, higher in the south than in the inland, and higher in the north than in the north. The average temperature of 65438+ 10 in the central mountain area of Lengyue is about 16.5 degrees, which is the lowest in the whole island. Most of the hottest months occur in July, and the average monthly temperature in the east and west is 29.2 degrees, which is the highest in the island.

The annual extreme maximum temperature in Hainan Island is about 39.0 degrees in the north, 37-39 degrees in the middle and less than 36 degrees in the west and southwest coast. It usually appears in April or May or June or July. The annual extreme minimum temperature mainly appears in 65438+ 10, but also in February or 65438+February. The annual average extreme temperature is below 5 degrees in the central mountainous area (3.6 degrees in Baisha), 6-8 degrees in most areas, and slightly higher than 10 degrees in the southern coast.

Hainan Island is one of the regions with the largest rainfall in the same latitude in the world, with rich water vapor sources, large precipitation and uneven distribution in time and space. The average annual rainfall is about 1 1,640 mm, and the annual rainfall distribution is circular, with more in the east and less in the west, more in the mountains and less in the plains, and the most in the southeast slope. The rainy area in the east is about 2000-2400mm, and the average age of Qiongzhong in the rainy center is 2440mm；; The less rainy area in the west is only about 1000mm (922mm in the east).