Home › Weather › Uk Indian Summer Weather Forecast September
Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Edinburgh Wire weather desk. Data from national met services via Open-Meteo.
According to the live forecast above, Edinburgh and much of Scotland can expect a brief spell of settled, mild weather in mid-September, often called an Indian summer. However, the term’s origins are debated, and conditions may vary by region.
What is an Indian summer?
An Indian summer describes a period of unseasonably warm, dry weather that occurs after the first autumn frost, typically in late September or early October. In the UK, it is often associated with a stable high-pressure system bringing clear skies and temperatures above the seasonal average. The phrase has been used in British weather lore since the 19th century, though its exact origin is unclear.
Will Edinburgh see an Indian summer in 2025?
The live forecast above suggests a temporary return of settled conditions for Edinburgh and the Lothians, with temperatures a few degrees above the September norm. While not a classic Indian summer — as frost has not yet occurred — the pattern fits the looser modern definition. For the latest outlook, check our 10 Day Weather Forecast UK page.
Is the term Indian summer offensive?
The phrase has been criticised for its colonial connotations, as it originally referenced Native American harvest seasons. Some meteorologists now prefer “late-summer warmth” or “second summer,” but the term remains widely used in UK forecasts.
When does an Indian summer typically occur in the UK?
In the UK, an Indian summer usually arrives between mid-September and early October, after the first autumn frost. The Met Office notes that it is not a formal meteorological term, but a popular description of a brief warm spell.
Will the Indian summer 2025 affect the whole UK?
The live forecast above indicates the warmest conditions across southern and eastern England, with Edinburgh and the east coast seeing milder but still pleasant weather. Western Scotland and Northern Ireland may remain cloudier and cooler.
For more regional forecasts, visit our UK weather hub or check the Glasgow Weather page for west-coast comparisons.