Is a September heatwave forecast for the UK?
Temperatures across the UK are expected to rise to summer-like levels this weekend, with highs reaching the mid-20s Celsius in southern regions. Although the weather will feel warm and humid, it will not meet the specific criteria for a heatwave, and cooler conditions are forecast to return by midweek. Long-range computer models indicate unsettled weather with rain and wind for the next week, followed by potential dry spells later in September, but no definitive signs of a heatwave are present.
- ▪Southern England is expected to reach temperatures in the mid-20s Celsius this weekend, which is several degrees above the September average.
- ▪Heatwave criteria require three consecutive days of temperatures above 25C in Scotland and Northern Ireland or 28C in the London area, which are not expected to be met.
- ▪The jet stream is anticipated to bring low pressure systems, resulting in rain and blustery winds over the next week.
- ▪Later in September, high pressure may influence the weather, leading to drier conditions and above-average daytime temperatures.
- ▪Current long-range forecasts do not indicate a heatwave, though they suggest the possibility of chilly mornings as autumn progresses.
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| Original publisher | BBC News — UK |
| Canonical URL | https://www.bbc.co.uk/weather/articles/c70l8vgk4vzo?at_medium=RSS&at_campaign=rss |
| Publication time | Fri, 11 Sep 2026 23:41:50 GMT |
| Retrieval time | 2026-09-11T23:48:35.569Z |
| Last seen | 2026-09-11T23:48:35.569Z |
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Is a September heatwave forecast for the UK?Image source, Anadolu via Getty ImagesByBen RichLead Weather PresenterPublished5 minutes agoTemperatures are set to climb across the UK this weekend, reaching summerlike levels in some places.It will feel warm and muggy - especially where there are sunny spells - although heavy rain also features in the forecast.The warmth will persist into Monday in many areas but nowhere is expected to reach heatwave criteria and cooler conditions are due to return by midweek.Computer weather models paint a very mixed picture for the second half of September but, while there are likely to be some warm spells, there are currently no definitive signs of a heatwave.How warm will it get this weekend?Outbreaks of rain will spread southwards during Saturday,…
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