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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the NewsPrism weather desk. Data from national met services via Open-Meteo.
September in the UK brings a transitional shift from summer warmth to autumn coolness, with mild days, increasing cloud, and a rising chance of rain across all regions, though southern areas often hold onto higher temperatures longer.
What is the typical weather in the UK during September?
September weather in the UK is characterised by average highs of 17–20°C in the south and 14–16°C in the north, with cooler nights. Rainfall increases through the month, especially in western and northern regions, while southern and eastern areas, including London and the Home Counties, often see drier, sunnier spells early in the month.
What should you wear for September weather in the UK?
Layering is key for September weather in the UK, as mornings can be cool while afternoons may still feel warm. A light jacket or cardigan, waterproof shoes, and an umbrella are practical for variable conditions, especially in cities like Edinburgh and Manchester where rain is more likely. For London, a mid-weight coat and scarf are sensible later in the month.
How does September weather compare across UK cities?
September weather in Edinburgh tends to be cooler and windier than southern cities, with average highs around 15°C and frequent drizzle. Glasgow sees similar conditions, while Bristol and Sheffield enjoy slightly warmer, drier spells. September weather near Manchester is often cloudy with moderate rain, making it one of the wetter urban areas this month. For a full regional breakdown, see the UK weather hub.
Is September a good month to visit the UK?
Yes, September offers mild temperatures and fewer crowds than summer. Southern England and London are often pleasant, though northern areas like Scotland can be wetter. Pack for changeable conditions to make the most of the season.
Does it rain a lot in the UK in September?
Rainfall increases across the UK in September, with western regions and cities like Glasgow and Manchester seeing more frequent showers. Eastern and southern areas, including London, tend to be drier, especially in the first half of the month.
What is the weather in London in September like?
September weather in London is generally mild and pleasant, with average highs of 19°C and around 50mm of rain over the month. Early September can feel summery, but by late month, cooler evenings and light jackets become necessary.