The end date of the current heat wave depends on location, but generally:
- In Spain, a historic August heatwave ended around August 18, 2025, followed by cooler temperatures through the rest of the month, although summer 2025 remains one of the hottest on record there.
- Across much of Europe, an intense heatwave persisted through mid-August 2025 with temperatures remaining very high possibly into late August, driven by a strong Heat Dome blocking pattern, with gradual moderation expected after mid-month.
- In the US, specifically Texas, heat waves have been peaking mid to late June 2025, with extreme temperatures continuing sporadically following that, and general heat wave season increasing in length, but no definitive end date is given for late August 2025.
- California continues to experience extreme heat and wildfires as of late August 2025 with no clear immediate end date, impacted by climate change trends.
- The UK heatwave in August 2025 was forecasted to last through the rest of the week as of mid-August, with thunderstorm activity expected afterwards which would signal the end of the hottest conditions.
In summary, the major European heatwaves were projected to start easing after mid-August 2025, but heat waves may still continue intermittently through August in parts of the US and California. For precise and updated local information, official weather services should be consulted. If you specify a particular region or country, a more accurate answer can be provided.