NASA Earth Observatory
New footage shows sustained high melting activity at several glaciers. The meltwater is flowing faster into the sea – with long-term consequences for global sea levels.
Climate Situation · September 2026
Climate signals, events, rules and counter-questions. For everyone who cannot follow everything daily – but wants to understand the relevant developments.

1881
Germany · Annual average
2025

Current developments and what they mean for businesses.
Climate signals
Three signals that remain
Global · September 2026
Second warmest September. Again over 1.5 °C.
September was globally 1.63 °C above the pre-industrial level and was the second warmest September on record. At the same time, it was the second consecutive month above 1.5 °C. For businesses: do not plan for heat, water stress and extreme weather in isolation.
Western Europe · September 2026
Drought becomes a question of logistics.
Western Europe experienced its warmest September on record, matching 2023. In parts of the Rhine, Danube, Vistula and Garonne-Dordogne, river flows were at record lows. For businesses, water availability and transport routes go hand in hand.
Oceans · September 2026
Warmer seas are no longer a marginal issue.
The average sea surface temperature outside the polar regions reached a record high of 21.05 °C in September. For businesses: weather patterns, fisheries, tourism, ports, and infrastructure are also affected.
The Climate Situation Traffic Light
Green
Important Information
Yellow
May become relevant
Orange
Potential impacts
Red
Impact visible
The situation in pictures
Satellites show what is often only visible on the ground much later. Three current images – and what they tell us about our changing climate.
NASA Earth Observatory
New footage shows sustained high melting activity at several glaciers. The meltwater is flowing faster into the sea – with long-term consequences for global sea levels.
NASA Earth Observatory
Satellite data shows rapid intensification. Warmer oceans favour the formation and strengthening of tropical cyclones – with rising risks for coastal regions.
NASA Earth Observatory
Surface temperatures in the Atlantic are significantly above the long-term average. This affects ecosystems, weather and the livelihoods of many regions.
CLIMATE SIGNALS
September shows that heat, water and logistics should not be planned in isolation from each other.
G LOBAL · SEP TEMBE R 20 26
Globally, September was 1.63 °C above pre-industrial levels, making it the second warmest September on record. At the same time, it was the second consecutive month above 1.5 °C.
For businesses: Do not plan for heat, water stress and extreme weather in isolation. Source: Copernicus Climate Change Service.
Climate adaptation
Climate adaptation does not only begin after floods or droughts. It starts with the question of which processes rely on reliable water, functioning transport routes, and a stable energy supply.
01
Which locations or processes are vulnerable to heat and water scarcity?
02
Which precursor products or transports depend on rivers, ports, or regions with high drought?
03
What alternatives are available before an event directly affects operations?
Reading list · Recently added
No compulsory reading and no book recommendations to tick off. Three new perspectives that make questions bigger and often clearer.
History · 2025
Dipesh Chakrabarty asks what climate change does to our ideas of modernity, history, and globalisation.
Suhrkamp
Present · 2025
A new book on the tension between the planetary and the global – and why simple answers are rarely enough.
Suhrkamp
Ethics · 2025
Lukas Sparenborg and Darrel Moellendorf gather perspectives on intergenerational responsibility and the moral questions of the climate crisis.
Suhrkamp
Transparency
The event radar links to the respective original reports. They serve to contextualise current events, not as a forecast.
The September report bundles global temperature, low river flows in Western Europe and record sea surface temperatures.
The Federal Environment Agency provides emissions data and projections for Germany. Binding targets and changes are verified at the original source for the regulatory horizon.