Average monthly wind speed in Heathrow

The mean monthly wind speed over the year in Heathrow (), the United Kingdom.

Throughout the year, wind speeds in Heathrow average from 3 m/s (6 knots) and increase to 4 m/s (8 knots).

With an average wind speed of 3 m/s (6 knots) in May, June, July, August, September, October and November, it experiences a fair and typical breeze. However, conditions can vary between days, and stronger winds may occasionally occur. On a day with 3 m/s (6 knots), leaves and small twigs are constantly in motion, and a flag would be clearly waving. This translates to roughly 11 km/h or 6.7 mph. Most days are suitable for spending time outdoors.

Wind speeds reach an average of 4 m/s (8 knots) in January, February, March, April and December; this is the windiest time of the year. This means that on some days, the air is a strong breeze. There may still be stronger gusts or calmer moments, but windy conditions are the norm during this month.

For more detailed information about Heathrow’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Heathrow climate page.