Abstract: According to the data of the visibility observations of the last 10 years in 18 stations along the coast of Fujian province, temporal and spatial distribution characteristics of the fog were analyzed, including monthly, seasonal and annual variations and other features. The main conclusions are: the number of occurrence of fog along the coastline of Fujian province in the last 10 years showed an increasing trend. The largest climate tend rate value is in Chongwu station of 2.4091 times per year. The fog occurred mainly in spring and winter, occupying 97.86% of the total number of occurrence times, rare in summer and autumn. The fog of the year was a bimodal trend of variation, mainly from Feburary to April. The fog mainly dominated in the morning and gradually dissipated after 10 am, and in afternoon and evening the fog appeared less likely. South central coastal areas of Fujian province was the foggy area, especially in Chongwu, Xiamen and Dongshan. It is important to study climate characteristics of coastal fog in Fujian for monitoring and early warning of sea fog.

Key words: Fog, Climate characteristics, Climate change, Coastline of Fujian province