Does foggy weather affect fishing?

Relative humidity and fog are both related and different. Fog will not be generated when the relative humidity is small, but it may be generated when the relative humidity is high. High humidity means more water vapor in the air, and high fog means more tiny water droplets suspended in the air. According to relevant data, water vapor and fine water droplets occupy a certain proportion in the atmosphere. If they are more, the percentage of oxygen in the atmosphere will decrease, and the partial pressure of oxygen will decrease, thus reducing the dissolved oxygen in water. It seems that relative humidity has a certain influence on dissolved oxygen in water; If there is fog, especially dense fog, the impact will be even greater.

You may have noticed that temperature and air pressure have an important influence on fish's mood-many times, the temperature or air pressure has little change, but the fish's mood is very bad. I noticed that relative humidity, fog and visibility have more and greater influence than air pressure. Sudden changes in air pressure only occur once or twice a month, but changes in relative humidity and fog may occur every three to five days. As far as the weather is concerned, it is difficult to fish when it is sultry, and it is also difficult to fish when there are many mosquitoes and swallows flying low. The sultry weather, which I thought was a problem of low air pressure, now has another view: it is caused by high relative humidity. When the relative humidity is high and sweat is not easy to evaporate, people will feel stuffy.

Relative humidity can reflect the degree of dryness and wetness of air. How can I master the relative humidity? There are two ways: first, look at the hygrometer (wet and dry thermometer)-the smaller the temperature difference between the dry bulb thermometer and the wet bulb thermometer, the greater the relative humidity; Conversely, the greater the temperature difference, the smaller the relative humidity. The specific figures can be found in the comparison table. Another method is to check the hourly relative humidity of China weather network (as shown in the picture).

High relative humidity affects fishing efficiency, which I have summarized from many fishing practices in recent years. Dense fog has a greater impact on fishing efficiency, which is my deep feeling recently. One day I went fishing, the relative humidity was 99%, and there was heavy fog. Finally, I joined the air force. Looking at another fishing, the relative humidity is only 37%. The catch that morning was really good, but it was obviously not good in the afternoon, and there were almost no fish, which was the reason for the increase of relative humidity.

Relative humidity is invisible to the naked eye and can only be based on hygrometer or online data. But the fog can be seen. Fog is easy to occur when the relative humidity is high. The fog is very small, and the houses and trees on the mountains in the distance are faintly visible, but not very clear. The fog is very heavy, the vision is hazy, and the mountains in the distance can hardly be seen. We all think it is foggy in winter. In fact, there will be fog in summer and autumn, and fog is a very important weather factor affecting fishing efficiency.

In summer and early autumn, the influence of fog on fishing efficiency is much greater than that in winter and late autumn. After the Mid-Autumn Festival, when the minimum temperature drops below 10℃, due to the low temperature, the dissolved oxygen in water is large, and the influence of relative humidity and fog on dissolved oxygen in water can be ignored. However, in hot summer, the temperature is high and the dissolved oxygen in water is low. Relative humidity and fog have important effects on dissolved oxygen in water. On the other hand, excessive humidity reduces the evaporation of water, which is not conducive to water cooling. Moreover, the relative humidity is high and it is easy to rain.