Home
Weather London
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
Career
Home / Weather News /

Video: Weather explained: How does fog form?

11:00
22 August 2023

Video: Weather explained
How does fog form?

Cars drive through fog

At this time of the year, conditions are ripe for fog to form, especially affecting our morning commute, do you know how it forms?

Winter is the perfect time for fog to develop, especially in periods of calm weather with weaker winds allowing dense fog to settle for days at a time.

To learn more on exactly how and why fog forms, check out our Weather Explained video:

There are actually five different types of fog that form in slightly unique ways. Cloud cover, wind speeds, temperature, moisture levels, and daylight hours all play a role.

Despite so many weather warnings recently, because of the many factors involved forecasting the arrival of fog is actually quite tricky. If just one aspect of the development is out of sync fog is unlikely to form.

More on the topic
Temperature map highlighting Northolt in West London at 20.1 °C, with nearby areas like London, Reading and Slough around 18–19 °C.
Wednesday, 18 March 2026

Over 20 degrees

Spring warmth for hottest day of 2026
Split weather graphic showing a strong low-pressure system with swirling winds near the Azores on the left, and a radar map with showers and rain warning over the Canary Islands on the right.
Friday, 20 March 2026

Storm Therese

Heavy rainfall on the Canary Islands
Weather map of the Alps with radar image. Above Switzerland and northern Italy, a symbol indicates snowfall in a large precipitation area over the western Alps.
Thursday, 12 March 2026

Lots of snow in the Alps

Temperature drop at the weekend
All weather news
This might also interest you
Weather map of the UK and Ireland showing scattered showers with cloudy patches across much of the region, especially around western and northern areas. Sunshine symbols appear over London, Cardiff, and parts of southern England, while temperatures range from 17°C to 18°C in most places. Areas of heavier rain are visible over the Atlantic to the west.
Friday, 29 August 2025

Breakfast brief

Unsettled conditions into the weekend
Weather graphic showing rain and wind fields over the Canary Islands and a central warning symbol.
Friday, 12 December 2025

Storm and rain

Turbulent weather in the Canary Islands
Illustration of white and yellow fireworks on a blue background.
Wednesday, 31 December 2025

Hello 2026

Happy New Year
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwittertikToklinkList