annual report

2025 was the 3rd warmest year on Earth since direct observations began. In Berkeley Earth’s analysis 2025 was 1.44 °C above our 1850-1900 average. The recent rate of warming is faster than historical trends. Extra warming appears to be related to a recent decrease in low cloud cover and man-made sulfur aerosols.

Berkeley, CA – Berkeley Earth, an independent, California-based non-profit climate monitoring organization, today released its 2025 Annual Temperature Report, concluding that 2025 was the third warmest year on Earth since 1850, exceeded only by 2024 and 2023. In Berkeley Earth’s analysis, the global annual average temperature in 2025 is estimated at 1.44 ± 0.09°C (2.60 […]

2024 was warmest year on Earth since direct observations began. In Berkeley Earth’s analysis 2024 was 1.62 °C above our 1850-1900 average, making it the second year above 1.5 °C. The recent warming appears faster than expected.

2023 was warmest year on Earth since direct observations began. In Berkeley Earth’s analysis 2023 was 1.54 °C above our 1850-1900 average, making it the first year above 1.5 °C. The extreme heat was due to a combination of natural and man-made factors, including global warming and an emerging El Niño event. 17% of the Earth’s surface had a locally warmest year, affecting 2.3 billion people, including significant parts of Asia, South and Central America.

2022 was nominally the fifth warmest year since record keeping began in 1850, as La Niña as kept temperatures a bit cooler. 28 countries, including most of Western Europe, New Zealand, and China set new record high annual averages.