Weather in Edinburgh in September 2025
Average weather
Average temperature in Edinburgh in September
Going from a maximum of +25°C during the day to a minimum of +7°C during the night, the temperature in September averages around +17°C.
The average maximum temperature goes down 11% by the end of the month, compared with the beginning of the month, from +16°C to +14°C.
Is Edinburgh warm or cold in September?
Edinburgh is typically mild in September.
Maximum temperatures go down compared to the previous month from +18°C to +16°C. The minimum temperature also goes down from +12°C to +10°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
September is one of the warmest months in Edinburgh, here is the comparison with other months:
Water temperature in Edinburgh in September
Water in Edinburgh in September is Cold. It varies from +14°C to +15°C, with an average of +15°C. This is almost similar to the air temperature, which averages +16°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Edinburgh in September?
Climate in Edinburgh in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +18°C | +16°C | +12°C | ||||
| Min. temperature | ||||||
| +3°C | -1°C | -4°C | ||||
| Max. temperature | ||||||
| +29°C | +25°C | +20°C | ||||
| Rainfall | ||||||
| 91 mm | 73 mm | 92 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +15°C | +15°C | +13°C | ||||
| Humidity | ||||||
| 78% | 80% | 82% | ||||
| Air pressure | ||||||
| 1012 HPa | 1012 HPa | 1008 HPa | ||||
| Sunny days | ||||||
| 1 | 2 | 2 | ||||
| Cloudy days | ||||||
| 8 | 9 | 9 | ||||
| Rainy days | ||||||
| 21 | 18 | 20 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +18°C in the day, the average maximum temperature lowers to +16°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 91 mm to 73 mm. Humidity rises from 78% to 80%. The average wind speed doesn’t change much during September, staying around 3 m/s. The good news is there are likely to be more sunny days in September, from 1 to 2.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Edinburgh is gradually decreasing during September, going from 3 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Edinburgh?
Climate Change over Years
The climate in Edinburgh in September has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+10°C) and the highest in 2014 (+13°C). The driest year was 2003 with only 701 mm of rainfall, and the wettest year was 2014 with 1741 mm.
FAQ
Is September a good time to visit Edinburgh?
Can you sunbathe in Edinburgh in September?
Can you swim in Edinburgh in September?
Is Edinburgh rainy in September?
Is it sunny in Edinburgh in September?
Other cities in United Kingdom
Monthly weather in Edinburgh
Source of the data
For this page, we’ve looked at the typical weather in Edinburgh, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.