United Kingdom's Hottest, Sunniest Year
Analysis based on 8 articles · First reported Jan 02, 2026 · Last updated Jan 03, 2026
The record-breaking heat and sunshine in the United Kingdom in 2025 highlight the ongoing impacts of climate change, which could affect industries such as agriculture through altered growing seasons and insurance due to increased weather-related claims. The increased solar hours also boosted the United Kingdom's solar farms, meeting over 6% of annual energy requirements, indicating a positive impact on the renewable energy sector.
The United Kingdom experienced its hottest and sunniest year on record in 2025, with an average annual temperature of 10.09 degrees Celsius and 1648.5 hours of sunshine. This surpasses previous records set in 2022 and 2003, respectively. The United Kingdom — Met Office confirmed these provisional figures, with Derek McCarthy, head of climate attribution, stating that this extreme warmth aligns with the expected consequences of human-induced climate change. All of the top 10 warmest years in the United Kingdom have occurred in the last two decades, with six records set since the start of the 21st century. The World Meteorological Organization and the European Union — Copernicus Climate Change Service also reported global warming trends, with 2024 being the hottest year globally. The consistent warmth in the United Kingdom was driven by persistent high-pressure systems, prolonged dry, sunny conditions, and above-average sea temperatures. This led to the warmest spring and summer on record and boosted solar energy generation, with solar farms meeting over 6% of the United Kingdom's annual energy requirements.
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