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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the BritainNow weather desk. Data from national met services via Open-Meteo.
The jet stream is forecast to remain active over the coming week, dipping south across the UK and bringing a spell of unsettled, cooler conditions with frequent rain and stronger winds, especially for northern and western areas.
What does the jet stream forecast mean for UK weather this week?
The core of the jet stream is expected to track just to the south of the UK by midweek, pulling Atlantic low-pressure systems across the country. This will introduce a noticeable drop in temperatures compared to recent days, with a return to more typical autumn weather. The 7 day jet stream forecast map shows a strong ribbon of fast-moving air stretching from Newfoundland towards the British Isles, which will drive bands of rain eastwards and create blustery conditions for many.
How far ahead can we rely on the jet stream forecast?
Short-range forecasts for the jet stream, up to about 7 days, are generally reliable for broad patterns. The 7 day jet stream forecast uk models are consistent in showing this southerly dip. Looking further ahead, the 10 day jet stream forecast uk and 30 day jet stream forecast products indicate a gradual northward retreat of the jet later in the month, which could allow more settled conditions to return for a time, though confidence is lower beyond 14 days.
What exactly is the jet stream?
A narrow band of strong wind in the upper atmosphere, flowing from west to east. It steers weather systems and separates cold polar air from warmer subtropical air.
Why does the jet stream forecast matter for my weekend plans?
If the jet stream is positioned south of the UK, expect wet and windy weather. A northern track often brings drier, more settled conditions. Check the 7 day jet stream forecast uk before heading out.
Where can I see a 7 day jet stream forecast map?
Our UK weather hub provides updates, and the Met Office publishes detailed upper-air charts showing the jet stream’s position and strength for the week ahead.