Update: UK red heat warning, recheck rail and outdoor plans for June 25-27

• Checked: 2026-06-25 10:05 KST
• Primary sources: Met Office red heat update, UKHSA heat-health alerts, National Rail hot weather disruption notice

This is an update to the earlier UK heat briefing. The Met Office says the Red Extreme Heat Warning remains in force from 09:00 on Wednesday June 24 to 21:00 on Thursday June 25, and some areas could still remain under yellow warnings into Friday and Saturday.

The daily-life impact is now clearer. National Rail says travel to, from, or within red and yellow warning areas on June 24, 25, and 26 should happen only if necessary. On June 25 it also announced reduced Elizabeth line service on some sections. If you already have plans, the practical question is no longer just temperature. It is now train reliability, ticket changes, refunds, and how much outdoor time you can cut.

What changed

• The red warning runs from June 24 at 09:00 to June 25 at 21:00.
• The Met Office says some areas could still reach around 38°C on Thursday and Friday.
• National Rail says travel should be essential only on June 24-26, and some tickets can be changed without extra fees until June 30.

Official links

• Met Office red heat warning update
• UKHSA heat-health alerts
• National Rail hot weather disruption notice

Bottom line: This is no longer only a heat story. For June 25-26, UK plans may need rail rescheduling and outdoor-plan cuts.