2025 set to be second or third warmest year on record, continuing exceptionally high warming trend

2025 Expected as One of the Warmest Years on Record

The year 2025 continues the alarming trend of exceptional global temperatures, projected to rank as either the second or third warmest year since records began, according to the World Meteorological Organization (WMO).

Recent Temperature Records

The period from 2015 to 2025 will mark the eleven warmest years in the 176-year observational history. Notably, the last three years stand as the top three warmest on record.

Temperature and Greenhouse Gas Levels

The average near-surface temperature from January to August 2025 was 1.42 °C ± 0.12 °C above pre-industrial levels, states the WMO report. Concentrations of greenhouse gases and ocean heat content, both reaching record highs in 2024, continued to increase throughout 2025.

Arctic and Antarctic Ice Extent

Sea Level Trends and Extreme Weather Events

The long-term rise in sea levels persisted despite a small temporary fluctuation caused by natural factors.

From January to August 2025, extreme weather events—including heavy rainfall, flooding, intense heatwaves, and wildfires—impacted communities globally.

"These events had cascading effects on lives, livelihoods, and food systems, leading to displacement across multiple regions and undermining sustainable development and economic progress."
Summary

2025 reinforces the pattern of rising global temperatures and climate disruptions, highlighting urgent challenges for human well-being and environmental stability.

Author’s Summary

The world faces an ongoing climate crisis in 2025, with record heat and weather extremes threatening ecosystems, economies, and societies worldwide.

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World Meteorological Organization WMO World Meteorological Organization WMO — 2025-11-06