🌡️ The September 2025 #C3S Climate Bulletin reports the third-warmest September globally, with an average surface air temperature of 16.11°C — 1.47°C above estimated pre-industrial levels. Global average sea surface temperature reached 20.72°C, the 3rd-highest on record for September. Get more insights 👉

Surface air temperature for September 2025 | Copernicus

September 2025 was the third-warmest September globally, with an average ERA5 surface air temperature of 16.11°C, 0.66°C above the 1991-2...

❄ August 2025: Arctic sea ice extent 12% below the 1991–2020 average for the month, ranking 8th-lowest on record. Antarctic sea ice extent ranked 3rd-lowest for August. More in the #C3S Climate Bulletin 👉

Sea ice cover for August 2025 | Copernicus

As Arctic sea ice is approaching its annual minimum extent, expected in September, the average extent in August 2025 was 12% below the 1991–2...

🌡 Third-warmest August globally, 1.29°C above pre-industrial level, 0.49°C above the 1991–2020 average for the month. Western Europe saw major heatwaves, mostly in the Iberian Peninsula and southwest France. Third-highest sea surface temperatures on record at 20.82°C. More insights in the #C3S Climate Bulletin 👉

Surface air temperature for August 2025 | Copernicus

July 2025 was the fifth month in the last 26 months for which the global-average surface air temperature was not more than 1.5°C above pre-ind...

The 2025 Antarctic ozone hole has been developing since the beginning of August, reaching an area of 15 million square kilometres by the end of the month, a few days earlier than the 1979-2022 average. Read more and follow the development at

Monitoring of the ozone layer | Copernicus

The ozone layer protects life on Earth from harmful solar ultraviolet (UV) radiation. In the late 20th century, human emissions of chemicals known ...

Ever wondered how heat stress is changing where you live? With the new Thermal Trace app from #CopernicusClimate and #ECMWF, you can explore “feels-like” temperatures, track heat stress categories and thresholds, and visualise interactive charts for your city. Read more about it 👉

Thermal trace: Decades of heat and cold stress data at your fingertips | Copernicus

The new Thermal Trace application, developed by the Copernicus Climate Change Service (C3S) and ECMWF*, allows us to explore, visualise, share and ...

Explore the app:

Thermal Trace

Explore the UTCI dataset from ECMWF

Have you explored the July 2025 #C3S Climate Bulletin? It was only the fourth month in the past 25 months with a global-average surface air temperature below the 1.5°C threshold; climate-related events from floods to wildfires continued. Get the details in our summary 🔗

Third-warmest July globally as extreme climate events continue | Copernicus

The latest Climate Bulletin by the Copernicus Climate Change (C3S) service confirms that July 2025 was +1.25°C above the pre-industrial baseli...

🌡️ Two major heatwaves impacted Europe in June, with western Europe as a whole recording warmest June on record. The western Mediterranean Sea recorded its highest-ever June SST. Read the article

Heatwaves contribute to the warmest June on record in western Europe | Copernicus

The European continent experienced two significant heatwaves in mid-June and late June-early July 2025. The first event peaked between 17 and 22 Ju...

#C3S

📣 Big update for the Methane Hotspot Explorer app from #CopernicusAtmopshere! New features include #methane plumes, a wind layer, and data on coordinates, emission rates and more. Monitor and explore methane hotspots all over the world. 🔗

CAMS Methane Hotspot Explorer application now integrates plume shape data | Copernicus

The Methane Hotspot Explorer app of the Copernicus Atmosphere Monitoring Service (CAMS) now features methane (CH4) plumes obtained from satellite d...

The new interface uses observations from the Tropospheric Monitoring Instrument (TROPOMI) on board the Copernicus Sentinel-5 Precursor satellite, processed by SRON, to provide an enhanced understanding of methane hotspot plumes.

Our latest animation, based on #CopernicusAtmosphere data, captures the intricacies of aerosol emissions and atmospheric dynamics observed in Europe during 11 and 16 June 2026. Read the article:

New CAMS video shows intense dust and smoke activity over Europe | Copernicus

A new animation produced by the Copernicus Atmosphere Monitoring Service (CAMS) using its global atmospheric composition forecast data shows the co...

Three charts based on #C3S data you shouldn’t miss this month: 📈 April 2025 was the second warmest April globally on record – #C3S 1️⃣

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Copernicus ECMWF (@copernicusecmwf.bsky.social)

🌡 The April 2025 Climate Bulletin is out. It was the second-warmest April globally, with an average ERA5 surface air temperature of 14.96°C, 0....

Dive into the bulletin:

Surface air temperature for April 2025 | Copernicus

April 2025 was the second-warmest April globally, with an average ERA5 surface air temperature of 14.96°C, 0.60°C above the 1991-2020 ave...