Why does it always rain in Haikou?

It is greatly affected by sea breeze, typhoon and air currents.

Haikou City is located at the northern edge of the low-latitude tropics and has a tropical monsoon climate. There is no severe cold in winter and no scorching heat in summer. It is evergreen all year round and is warm and comfortable. The sunshine hours throughout the year are long and the radiation energy is large. The average annual sunshine hours are more than 2,000 hours, and the amount of solar radiation can reach 110,000 to 120,000 calories.

The annual average temperature is 24.3°C, the highest average temperature is around 28°C, and the lowest average temperature is around 18°C. The average annual precipitation is 2067 mm, the average annual evaporation is 1834 mm, the perennial wind direction is mainly southeasterly and northeasterly, and the annual average wind speed is 3.4 meters/second.

The terrain of Haikou City is slightly elongated and heart-shaped, with gentle terrain. The longest river in Hainan Island, the Nandu River, passes through the middle of Haikou City. The eastern part of the Nandu River tilts slightly from south to north, and the western part of the Nandu River tilts from north to south; the northwest and southeast are higher, the central part of the Nandu River is low and flat, and the north is mostly a small coastal plain.

The city except Ma'anling in Shishan Town (222.8 meters above sea level), Jiuzhou Ridge in Jiuzhou Town (199.9 meters above sea level), Rishailing in Jiazi Town (171 meters above sea level), Yongxing Except for the 38 higher hills such as Leihuling (elevation 168.3 meters) in the town, most of them are platforms and plains below 100 meters above sea level.