August is not Gatwick's worst month, and the route matters more than the season. The CAA publishes delays and cancellations only as full-year 2025 figures, with no monthly breakdown, so the odds in August can only be judged through the weather.
Months and weather
According to EUROCONTROL data for January 2018 – September 2026, weather restrictions on arrivals applied at Gatwick on 15% of August days, 27% of October days and just 10% of June days. Usually this means minutes of waiting: an average of 1.07 minutes per arriving flight. All months are on the Gatwick weather page.
Routes and airlines
In 2025 the airport as a whole saw 1.4% of flights disrupted, below the national average (1.6%). On Newquay it was 18% of 1,312 flights, on New York JFK 5.0%, on busy Barcelona 1.4%. easyJet UK disrupted 0.9% of its 122,380 flights, British Airways 4.3% with 267 cancellations. On flights up to 1,500 km your right to care starts at a delay of 2 hours: food and drink, phone calls or emails, accommodation if the delay runs overnight.