TL;DR
The Met Office has warned of an increased likelihood of heatwaves through summer 2026 against an El Niño-influenced background. The Food and Drink Federation has revised its food inflation forecast upward, citing energy supply disruption. UK households face renewed pressure on grocery and energy bills.
Last reviewed 3 June 2026
Key facts
- ONS food and non-alcoholic beverage inflation was 3.0 per cent in the 12 months to April 2026, down from 3.7 per cent in March.
- The Food and Drink Federation has revised its 2026 food inflation forecast to reach up to 9 per cent by year-end, citing energy supply disruption.
- The Met Office three-month summer forecast points to an increased likelihood of heatwaves through June, July and August 2026.
- Provisional Met Office figures recorded 35.1°C at Kew Gardens in May 2026, breaking the UK May record.
- Overall CPI inflation eased to 2.8 per cent in April 2026, down from 3.3 per cent in March, helped by the energy price cap introduced on 1 April.
What El Niño is doing to food supply
El Niño is a recurring warming of surface waters in the central and eastern Pacific. It alters rainfall patterns across major agricultural regions, including rice in southeast Asia, wheat in Australia, cocoa in west Africa, and palm oil in Indonesia. The Food Foundation's April 2026 Food Prices Tracker reported that the Food and Drink Federation has revised its UK food inflation forecast upward from a previous 3 per cent year-end target to as high as 9 per cent.
The mechanism is indirect. UK supermarket prices reflect a global commodity chain, sterling exchange rates, energy costs, and labour costs. El Niño feeds the first input. The April ONS data shows food inflation cooling to 3.0 per cent year-on-year, but the FDF assumes that base will rise again if Pacific weather patterns continue to disrupt harvests.
What the Met Office is forecasting
The Met Office published its three-month summer forecast on 2 June 2026, signalling an increased probability of heatwaves through summer. Provisional figures recorded 35.1°C at Kew Gardens during May, the highest UK May temperature on record. The UK Health Security Agency placed amber heat-health alerts across South West, South East, London, East and West Midlands, and East England regions.
Hot weather raises domestic electricity demand for cooling and refrigeration, increases food spoilage in transit and storage, and adds stress to working populations covered by employer duty-of-care rules under the Workplace (Health, Safety and Welfare) Regulations 1992.
Practical impact on UK household budgets
The cost picture for UK households in summer 2026 has three moving parts. First, food: the ONS food CPI is currently 3.0 per cent but the FDF expects upward pressure. Households planning grocery budgets should expect volatility rather than a single trajectory.
Second, energy: the Ofgem default tariff cap stepped down on 1 April 2026 and contributed to overall CPI falling to 2.8 per cent. Hot weather pushes some demand upward (cooling, refrigeration) but reduces heating demand, so the net summer impact on energy bills is modest for most homes.
Third, insurance: ABI data from previous heatwave summers shows uplift in subsidence and sun damage claims. Contents and buildings policies typically cover these but specific exclusions apply.
Advisory: Forecasts are probabilistic, not certainties. Food and energy prices respond to multiple inputs including geopolitics, the sterling exchange rate and Ofgem cap reviews. Use ONS and Ofgem data rather than headline forecasts when planning household budgets.
Related guides
Disclaimer
This article is for general information only and does not constitute financial, legal, tax, insurance, or investment advice. Kael Tripton Ltd is registered with the Information Commissioner's Office (ICO ZC135439) as a data controller but is not authorised by the Financial Conduct Authority. Figures and rules are correct at time of publication and may change. Always check the primary source linked below before acting on any information, and seek advice from a qualified professional for your specific circumstances.
Sources
Frequently asked questions
What was UK food inflation in April 2026?
ONS data shows food and non-alcoholic beverage inflation at 3.0 per cent in the 12 months to April 2026, down from 3.7 per cent in the 12 months to March 2026.
Will El Niño actually raise UK food prices?
The mechanism is indirect. El Niño disrupts harvests in producing countries, which feeds into global commodity prices, which feeds into UK shop prices over a lag of several months. The Food and Drink Federation has revised its 2026 forecast upward partly on this basis.
Is the energy price cap still falling?
The Ofgem default tariff cap stepped down on 1 April 2026, contributing to overall CPI easing in April. Ofgem reviews the cap quarterly. Future direction depends on wholesale gas and electricity prices.
Does my home insurance cover heatwave damage?
Contents and buildings insurance typically covers heat-related events including sudden damage, but policy wordings vary. Subsidence cover is standard on buildings insurance but excesses are typically high. Read the policy summary before relying on cover.
