London

Is London Heathrow Airport turbulent?

Heathrow's primary weather challenges are fog and crosswinds rather than turbulence. The UK's maritime climate brings frequent low cloud and poor visibility, particularly in autumn and winter. Atlantic storms can produce gusty crosswinds that make landings bumpy. Snow is relatively rare but causes significant disruption when it occurs due to limited de-icing capacity.

• Fog causes the most frequent weather delays at Heathrow
• Every aircraft must be de-iced before takeoff in freezing conditions
• Atlantic storms bring gusty crosswinds several times per winter

Why does Heathrow have so many fog delays?

The Thames Valley location combined with moisture from the North Sea creates ideal fog formation conditions. Radiation fog forms on clear, calm nights and can persist through midday. Unlike continental airports, Heathrow's mild winters mean freezing fog is less common, but regular fog still significantly impacts operations. The airport's slot system means knock-on delays cascade throughout the day.

When is the smoothest time to fly from Heathrow?

Late spring (May-June) and summer (July-August) offer the most reliable weather with long days and minimal fog. November through February brings peak fog season. Winter storms can disrupt operations but are usually manageable. Early morning fog often lifts by midday, so afternoon departures may be more reliable in autumn and winter.