# UK sets provisional June temperature record at 36.7°C for second consecutive day
> The Met Office confirmed Merryfield in Somerset provisionally broke its own record set 24 hours earlier; Wales and Northern Ireland also set national June highs as a heat dome covers Western Europe

**Meta:** type: story · date: 2026-06-25 · heads: The Quiet Shift, What Broke · 3 takes · 1 lenses · 1 regions

## Summary

The Met Office provisionally confirmed that Merryfield, Somerset, recorded 36.7°C on June 25, setting a new UK June maximum temperature record for the second consecutive day after RAF Yeovilton hit 36.4°C on June 24. Wales recorded a June national high of 35.9°C at Cardiff Airport and Northern Ireland 30.8°C at Castlederg, both also national June records. The heat dome covers most of Western Europe; [France](/en/n/france-heat-fifty-deaths-jun25) has recorded more than 50 heat-related deaths this week, and [French nuclear capacity](/en/n/france-nuclear-edf-heatwave-jun25) is under cooling-water pressure.

## Why it matters

June records broken on back-to-back days indicate that the UK climate envelope is shifting faster than seasonal models projected. NHS England and Wales activated its heat health alert plan; national grid peak demand has exceeded summer planning assumptions. The same ridge driving UK temperatures is stressing French nuclear output, creating cross-border electricity supply pressure.

## What to watch

- Met Office final confirmation of records (provisional status pending instrument checks).
- NHS heat-related hospital admissions data for June 25-26.
- Whether temperatures hold above 35°C on June 26 or the Atlantic low breaks the ridge.

## Regional takes (batched by bias / lens)

### unlabelled
- **Met Office** (United Kingdom, en) — Provisional Met Office confirmation that Merryfield, Somerset, recorded 36.7°C on June 25, beating the 36.4°C at RAF Yeovilton on June 24; Wales set a June national record of 35.9°C at Cardiff Airport; Northern Ireland set 30.8°C at Castlederg. All provisional pending instrument checks.
  Source: https://www.metoffice.gov.uk/about-us/news-and-media/media-centre/weather-and-climate-news/2026/new-uk-june-maximum-temperature-record-for-second-consecutive-day
- **BBC News** (United Kingdom, en) — 
  Source: https://www.bbc.co.uk/news/
- **The Guardian** (United Kingdom, en) — 
  Source: https://www.theguardian.com/

## Across the graph
- Related: [[france-heat-fifty-deaths-jun25]], [[france-nuclear-edf-heatwave-jun25]]
- Entities: United Kingdom

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Canonical: https://rbtfl.xyz/en/n/uk-june-heat-record-jun25