June 2026 was provisionally the warmest June on record for England, with the average temperature reaching 17.1°C, surpassing the previous record of 16.9°C set just last year. According to data from the Met Office, the UK also experienced its second warmest June overall. These figures remain subject to final verification against international standards.

Since temperature records began in 1884, England’s three warmest Junes have all occurred within the past four years, with 2026 ranking first, followed by 2025 and 2023, which recorded an average of 16.7°C. The heatwave that struck in the latter part of the month brought sustained high temperatures and notable overnight warmth across many regions.

From June 21 to June 27, temperatures exceeded 30°C somewhere in the UK on each of seven consecutive days. The hottest temperature, provisionally recorded at 37.7°C in Lingwood, Norfolk, on June 26, represents a new benchmark for June, outpacing the previous highest monthly temperature of 35.6°C in Camden Square, London, in 1957. In addition to high daytime temperatures, the overnight minimum in Cardiff Bute Park only fell to 23.5°C on June 25, another provisional record for June.

The Met Office cited the extreme heat and humidity as grounds for issuing a rare red warning for heat for three consecutive days—a duration longer than any previous issuance of this alert. The warning was aimed at mitigating risks associated with the prolonged high temperatures.

Dr. Emily Carlisle of the Met Office noted that temperatures in five of the first six months of 2026 were at least 1°C above average, with January being the sole month below average. The persistent warmth marks a continuation of recent trends in the UK’s climate patterns.