A 2026 climate report describing observations from 2025
WMO’s report identifies 2025 as the second or third warmest year on record, around 1.43°C above the 1850–1900 average. It describes 2015–2025 as the eleven warmest years in the record.
The publication date is March 2026, while the observation year is 2025. An annual global anomaly and a UK monthly anomaly use different geographical and temporal scales.
Use the evidence
Compare your reasoning with guidance
They answer different questions and use different baseline periods: global annual temperature against 1850–1900, versus UK September against 1991–2020. State scale, period and baseline before comparing.
Matching evidence to a claim · Adaptation to changing conditions