Copernicus: Last Month Matched July 2023 as Hottest on Record

Global air temperatures: the top-line numbers

If it felt like the heat would not quit, you were not imagining it. Copernicus reported that last month matched July 2023 as the warmest ever observed, with the global average sitting 1.65C above preindustrial baselines. Western Europe just wrapped its hottest summer on record, edging out the previous peak set in 2003. Copernicus added that global warming topped 1.5C again in August 2026 - the first time that mark had been reached since November 2025.

Oceans hitting a streak

The oceans are running hot too. According to Climate Central's analysis of NOAA data, since June 2 the daily ocean surface readings beyond the polar zones have set new highs for that point in the calendar. That streak includes a provisional all-time daily high of 21.24C (70.2F) on Aug. 23, topping a mark set in March 2024. Across most ocean basins, Thursday is expected to log a 100th consecutive day of record-for-date readings.

What the wider reports say

The United Nations offered a stark outlook on Sept. 2, warning that the world is likely to overshoot 1.5C in the next few years, a level countries aimed to avoid under the Paris accord. Long-term warming is estimated at about 1.4C today. In the most optimistic UN pathway, temperatures would crest near 1.8C before easing lower.

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The near-term drivers and what it means for you

A strong El Niño is stacking natural variability on top of warming driven by greenhouse gases. As Climate Central atmospheric scientist Zachary Labe put it, "2026 is already shattering records for ocean heat, and this is only likely to continue into 2027 and well into the future if we do not reduce greenhouse gas emissions." Big picture, record heat on land and at sea can reshape how climate policy, energy demand, and adaptation spending evolve over the next few years. That is the context regular investors are navigating.

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