watermeadow
El Niño affects the Pacific. That’s a looooong way away.
Yes it does.
It warms the water in the Pacific leading to more evaporation, and then more rain.
The increased heat leads to heatwaves all over the world.
It disrupts the underwater currents like the jet stream, which keep the temperatures in the UK at reasonable levels in winter.
It leads to more tropical storms, even in the Atlantic, which bring us storms through October and November that can stop shipping and cause damage to houses.
It may bring us an early and colder Winter, possibly not a problem in the South but in the north there could be freezing temperatures before Christmas when people are travelling to visit family. So lookout for lots of road accidents due to ice.
It causes higher temperatures world wide which have led to crop failures and droughts. Thousands of people have died heat related deaths over the last year - about 35,000 of them in Europe alone.
How much will it affect us over Winter? Nobody knows. We've never recorded temperatures like this year before. That's the point though - nobody knows what to expect so it's being suggested that you make sure you have a few stocks in. In case of power cuts. In case of flooding. In case of freezing temperatures when you can't get out. Some areas will be affected more than others whatever happens.