2025 Declared the Hottest and Sunniest Year in UK History

The UK Met Office has officially declared that 2025 marks the warmest and sunniest year ever experienced in the United Kingdom, according to provisional climate data released this week.

Unprecedented Temperatures

The average annual temperature reached a record 10.09°C in 2025, beating the previous high of 10.03°C set in 2022. This places 2025 alongside the years 2022 and 2023 as the hottest years documented in UK history.

Remarkably, this year is only the second time the average annual temperature in the UK has surpassed the 10°C mark, reinforcing the trend of escalating temperatures.

Unrivaled Sunshine Hours

Besides the record-breaking heat, the last twelve months have also seen the highest levels of sunshine ever recorded, with a total of 1,648.5 hours, outpacing the previous record of 1,587.1 hours set in 2003 by 61.4 hours.

Experts attribute this extended period of sunshine to notable shifts in weather patterns, agriculture, and water resource management throughout the year.

Severe Weather Events: Storm Éowyn

While 2025 brought warmth and sunshine, it also faced significant weather disturbances. Storm Éowyn, recognized as one of the most impactful windstorms of the century, caused widespread disruptions, raising concerns regarding increasingly erratic weather patterns.

Indicators of Climate Change

Experts suggest that these new records highlight ongoing climate changes affecting the UK, with a growing incidence of warmer temperatures and extreme weather patterns.

The Met Office is set to release its final confirmed data later in the year, but early signs indicate that 2025 will stand out in the UK’s climate records.