Birmingham airport weather: what to expect, and when it affects your flight

For today and the next few days, use the Met Office forecast for Birmingham International Airport, linked in the panel beside this page. There is a deliberate reason no temperature is printed here: these pages are static, rebuilt when the facts change rather than every hour, so a live number baked into the page would be wrong more often than right. The same goes for today's security queue and today's delays.

During a named storm the Met Office warnings page is the more useful of the two. A yellow or amber wind warning is the earliest reliable signal that a flying day will be untidy, and it usually appears a day or more before airlines start cancelling.

No forecast tells you whether your own flight is affected. That only shows on the boards, so check Birmingham departures or Birmingham arrivals on the day, and check the airline's app too, because airlines normally cancel and re-book before the airport board catches up.

These are the Met Office 1991 to 2020 averages for Coleshill, the climate station nearest the airport and the official record for this part of the Midlands. Treat them as what a normal year looks like, not a forecast for yours.

Two things stand out. Rainfall never drops below 47mm in any month, so there is no dry season here in the way there is at some southern airports, and June is wetter than several autumn months at 65mm. And the summer peak is flat: May, June and July all sit within a single hour of each other on sunshine, around 193 hours, so there is no clear best month for sun.

Birmingham Airport is the least sunny of the four big airports our sister sites cover, and the gap is not small.

Coleshill records about 174 hours a year less sunshine than Heathrow, which is close to a week of daylight. That is the normal Midlands position rather than anything unusual: further from the south coast, more often under cloud arriving off the Irish Sea, and without the clearer south-eastern spells the London airports get. It is worth knowing if you are choosing between flying from Birmingham and driving south, though it makes no difference at all to whether your aircraft leaves.

Frost is the figure with a practical edge. Coleshill averages 42 air-frost mornings a year against 27 at Heathrow, because the airport sits at about 327 feet in open country on the edge of the city rather than inside a large urban heat island. That means de-icing is a more regular part of an early winter departure here, so an 06:00 flight in December or January deserves a little more slack in your plans.

One thing the comparison does not support is the idea that Birmingham is a wet airport. At 708mm a year it takes clearly less rain than Gatwick's 834mm, and the difference between it and the drier southern airports is smaller than the sunshine gap suggests.

Most weather does not delay flights. Rain does not, and neither does ordinary cold, heat or cloud. Three things genuinely disrupt Birmingham, and the single runway means all three show up as delay rather than as spare capacity absorbing the problem.

Fog is the main one. It rarely closes the airport, because the runway carries an instrument landing system good enough for very low visibility and most aircraft and crews are certified for it. What fog does is force air traffic control to put wider gaps between arriving aircraft, cutting the landings possible each hour. On a single runway there is no second stream to take up the slack, so an autumn or early-winter fog morning produces delays that follow the aircraft around Europe and back through the day.

Frost and de-icing come second. With 42 frost mornings a year this is a routine winter event rather than a rare one. Each aircraft has to be sprayed before departure, it takes several minutes each, and there are a limited number of rigs, so the effect concentrates on the first wave of departures.

Storms are the third. A strong crosswind is the awkward case, and limits vary by aircraft type, so smaller regional aircraft are usually the first to be cancelled while larger ones keep operating. Airlines normally thin the schedule the day before a named storm, so check your flight the evening before rather than on the morning.

In every case the forecast tells you whether disruption is plausible. Only the live boards and your airline tell you whether it is happening to you.

Weather delays work differently from other delays, and it catches people out. Weather severe enough to make flying unsafe is an extraordinary circumstance under the UK261 rules, and that releases the airline from paying compensation. The fixed cash payouts that run into the hundreds of pounds do not apply to a fog morning or a storm.

What still applies, whatever the cause, is the duty of care. Past two hours late on a short-haul flight, three hours on medium-haul or four on long-haul, the airline must provide meals and refreshments appropriate to the wait. If the delay runs into the next day it must provide a hotel and the transport to it. If the flight is cancelled outright you keep the choice between a full refund and re-routing to your destination, regardless of the weather.

Two practical notes. Airlines do not always offer the duty of care during weather disruption, when the desks are busiest, so ask for it. And if you end up buying your own meal or room because nobody was there to arrange one, keep every receipt and claim afterwards, because reasonable costs are recoverable even when compensation is not. The full detail, including how to escalate to the Civil Aviation Authority, is on cancelled flights and your rights.