The foggiest places in the world

the foggiest places in the world

Fog is a dense cloud created by small water droplets that significantly limits visibility to less than 1 km horizontal distance. On the Peninsula, prolonged periods of fog usually occur during the colder months of November, December, January and February. During this time, stable atmospheric conditions give rise to radiation and advection fogs in the lower layers of the atmosphere. The foggiest places in the world They are beaches, lakes, forests, rivers and reservoirs.

In this article we are going to tell you which are the foggiest places in the world and how fog is formed.

how does fog form?

fog in lime

Long-lasting, long-lasting fogs occur in various parts of the world, and while the World Meteorological Organization may not have an official record of the cloudiest place on Earth, extensive analyzes and studies consistently point to various regions as the pioneers in this atmospheric phenomenon. Fog formation is an atmospheric phenomenon that occurs when Water vapor in the air condenses into small liquid droplets, creating a suspension of fine particles that reduces visibility. This process is usually triggered by a combination of climatic and geographic factors.

First of all, temperature and humidity are variables that participate in the formation of fog. When hot, humid air comes into contact with colder surfaces, such as the ground or bodies of water, condensation occurs. This condensation occurs because hot air can contain more water vapor than cold air. The temperature difference causes the water vapor to cool and condense into tiny droplets.

Clear nights are usually conducive to the formation of fog, since during these conditions, the earth quickly releases the heat accumulated during the day, cooling the layer of air near the surface. Besides, The presence of water in liquid form, such as rivers, lakes, or soil moisture, can increase the amount of water vapor available for condensation.

In mountainous regions, orography is a determining factor in the formation of fog. When moist air rises up a slope, it cools and becomes saturated, leading to the condensation of water vapor into fine water droplets that form fog. This type of fog, known as hillside fog, is common in mountainous areas and valleys.

In addition to these factors, the presence of particles suspended in the air, such as dust, smoke or aerosols, can provide condensation nuclei for water vapor to adhere to, accelerating the fog formation process.

Frequent places where there is fog

fog formation


On beaches, fog can form due to the temperature difference between the water and the surrounding air. Overnight, When air temperature decreases, sea water retains its heat longer. This thermal difference causes the air above the water surface to cool rapidly, leading to the condensation of water vapor and forming a coastal fog. This phenomenon is common in coastal climates and adds a mystical aspect to mornings at the beach.

Lakes, rivers and reservoirs

In these places, fog formation is usually associated with the release of latent heat. During the day, these bodies of water absorb solar radiation and store heat. At night, this heat is slowly released, warming the layer of air in contact with the water surface. When the air temperature decreases, water vapor condenses, creating fog. This type of fog is known as freshwater fog and can give rise to mysterious landscapes in lake and river environments.


The formation of fog in forests may be due to the release of moisture by vegetation. During the night, plants release water vapor into the atmosphere through a process called transpiration. When the temperature drops, this water vapor can condense, generating a characteristic fog in the forest canopy. This type of fog contributes to the humidity of the forest and has a direct impact on its ecosystem.

Know the places where there is the most fog in the world

mount washington

Mount washington

Mount Washington has the notable achievement of recording more than 300 days of fog in a single year. Additionally, it is recognized as the destination with the most severe weather conditions, characterized by surface winds reaching a staggering 372 kilometers per hour, and the coldest perceived temperature ever documented, as a result of the combination of chilling winds and a temperature that plummets to -44 degrees Celsius.

point reyes

Located in California, USA, Point Reyes Cliff is a remarkable natural formation. Just beyond is the Point Reyes precipice, an area where the iconic lighthouse stands as a beacon to ships that often cannot glimpse the shoreline, even during the day. As with Mount Washington, documented data confirms that This location experiences an exceptionally high number of foggy days each year, totaling just over 200.. The lush greenery of the landscape conjures up images of Ireland, with solitary houses dotting the narrow two-lane roads, emphasizing the utmost importance of caution.

Newfoundland Island

At the easternmost point of Canada lies a fog-ridden region, with cities like Trepassey and Argentia enduring more than 200 days of fog a year. Even the capital, St. John's, experiences this phenomenon for approximately 185 days a year. Fog in this area arises from the evaporation of groundwater. As moist air cools, it condenses and forms clouds composed of small droplets suspended at extremely low altitudes. Unlike Point Reyes Cliff and Mount Washington, this island is mostly inhabited, making it the unequivocal champion of the foggiest places in the world.

po valley

In the Po Valley, located in northern Italy, fog formation occurs frequently due to the unique topography and specific weather conditions of the region. It is an extensive river plain surrounded by mountain ranges, such as the Alps and the Apennines. During the fall and winter season, the nights in this region are cold, and The presence of rivers, canals and moisture in the ground contributes prominently to the formation of fog.

During the night, the earth cools rapidly, releasing the heat accumulated during the day. The proximity of rivers such as the Po River and other bodies of water stores heat and contributes to the generation of a layer of humid air over the plain. When this layer of warm, humid air comes into contact with low night temperatures, the water vapor present condenses, forming a dense fog in the Po Valley.

I hope that with this information you can learn more about the foggiest places in the world and how it is formed.

Leave a Comment

Your email address will not be published. Required fields are marked with *



  1. Responsible for the data: Miguel Ángel Gatón
  2. Purpose of the data: Control SPAM, comment management.
  3. Legitimation: Your consent
  4. Communication of the data: The data will not be communicated to third parties except by legal obligation.
  5. Data storage: Database hosted by Occentus Networks (EU)
  6. Rights: At any time you can limit, recover and delete your information.