WMO confirms 2025 was one of warmest years on record

Written By Global Ocean Health
PRESS RELEASE • World Meteorological Organization
January 14, 2026

Figure 1: Annual global mean temperature anomalies relative to the 1850-1900 average shown from 1850 to 2025 for eight datasets as shown in the legend.

Geneva, Switzerland (WMO) – The World Meteorological Organization (WMO) has confirmed that 2025 was one of the three warmest years on record, continuing the streak of extraordinary global temperatures. The past 11 years have been the 11 warmest on record, and ocean heating continues unabated.

Key messages

  • Past 11 years have been 11 warmest on record

  • Temporary cooling by La Niña does not reverse long-term trend

  • Ocean warming continues unabated

  • WMO consolidates eight datasets for single authoritative source of information

  • International data exchange underpins climate monitoring

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