The record El Niño and winter 2026/27: what it actually means for your home

When we wrote about El Niño back in June, it was still forming and nobody knew how big it would get. That question has now been answered, and the answer is bigger than anyone expected.

What has changed since the summer

In August, the Met Office described the developing event as unprecedented, and Professor Adam Scaife, its Head of Long Range Prediction, said he had never seen an El Niño signal this intense in their forecasts.

This week, the forecasts became fact. The Met Office has confirmed that sea temperatures in the central Pacific have now gone past the levels recorded in any previous El Niño, and the event has not even peaked yet.

The numbers behind that are worth a moment. El Niño is measured by how far sea surface temperatures in the Pacific sit above average. A typical event runs at 1 to 2°C, and 2°C is already considered very big. This year’s models have been pointing to more than 3°C.

In short, 2026 looks set to be remembered for the largest El Niño in living memory, and probably the largest since the 19th century. Forecasters are not really arguing about the Pacific side of this. What it means for the weather over Rugby, Coventry, Warwick and Leamington Spa is a different question, and a more interesting one.

What that means for weather here

El Niño happens in the Pacific. Its effect on the UK is indirect, arriving through changes to the jet stream, and it is only one of several things shaping our winter. The Met Office says scientists are still working out whether the effects around the world will match the size of the event itself, so nobody should treat this as a guaranteed forecast.

What El Niño tends to bring, according to the Met Office, is a higher chance of milder, wetter and windier weather through autumn and early winter, sometimes followed by colder, calmer spells later on. So the most likely shape of the next few months is:

• An unsettled, wet and stormy autumn and early winter, rather than an early freeze
• A raised chance of a cold, settled spell in the second half of winter, closer to February than to Christmas
• Sharp swings between the two, with very little warning

Wet and windy: the jobs to do before October

A stormy autumn is harder on a heating system than most people realise, and it is the part of the forecast we are most confident about.

Get your boiler serviced now, not in November. Demand for heating engineers climbs steeply from October, and every year we take calls from people whose boiler failed on the first genuinely cold morning. A service picks up the things that turn into breakdowns: pressure that has been quietly dropping, a worn heat exchanger, a pump on its way out. It also keeps the boiler running efficiently, which matters when it is working hard for five months.

Check the outside of your system. Driving rain and high winds find weak points. Take a look at your flue terminal, any external pipework and its insulation, and the seal where pipes enter the wall. Clear gutters and downpipes too, since overflowing water running down an external wall causes more damp problems than most people expect. If you have an air conditioning or heat pump unit outside, keep the area around it clear of leaves and debris, because blocked airflow makes it work harder and cost more to run.

Know what to do after a power cut. Storms bring outages, and many modern boilers and heat pumps need resetting once the power returns. Find out how yours resets now, rather than in the dark. While you have the manual out, check where your filling loop is too, so you can top up the pressure if it drops.

If a cold snap does arrive

The single most common winter callout we get is a frozen condensate pipe. Modern condensing boilers drain a small amount of water through a plastic pipe, and if that pipe runs outside and unlagged, a hard frost can freeze it solid. The boiler then shuts itself down as a safety measure. It looks like a breakdown, but it is often fixable in minutes, and it can usually be avoided altogether if the pipe is lagged properly beforehand.

A few other things that make a cold spell much less stressful:

• Set your heating to tick over at a low temperature rather than switching it off completely if you are away
• Find your internal stopcock now and check it actually turns
• Bleed any radiators that have cold patches at the top, so you are not paying to heat water that never reaches the room

If you would rather not think about any of this, a Care Plan covers your annual service and breakdown repairs from £12.50 a month. One of our engineers checks your system before cover starts, which is another good reason to set one up now rather than when the first frost arrives.

We cannot forecast the winter, but we can help you prepare for it

46 years of Midlands winters have taught us that the households who cope best are the ones who sorted their heating out in September.

Whether this El Niño delivers storms, a late freeze or both, our engineers are here when you need them.

To book a boiler service, set up a Care Plan or talk through air conditioning for your home, contact our team today or call 0330 383 0000.