Edinburgh weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: July – August
What is the weather like in Edinburgh in September?
In September, Edinburgh is cool: daytime highs average 15 °C, and nights cool down to about 10 °C. The sea averages 13.6 °C – swimming is only for the hardy. Expect around 4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 58 mm in total. All in all, September is a so-so month for a holiday in Edinburgh.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 63 | 56 | 30 |
| Day | 17° | 15° | 12° |
| Night | 12° | 10° | 8° |
| Sea | 15° | 14° | 12° |
| Sun | 5 h | 4 h | 3 h |
| Rain days | 14 | 11 | 14 |
More details for September
- Daylight
- 12 h 52 min06:42 – 19:34
- UV index
- 3 · moderateclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 21 km/haverage daily peak
- Cloud cover
- 73 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/London
How the score comes together
- Temperatureweight 50 %74 %
- Sunshineweight 20 %22 %
- Few rainy daysweight 30 %50 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- A jumper for the evenings
- Rain jacket or umbrella
Edinburgh in September: quick answers
Is Edinburgh hot in September?
No. In September, Edinburgh is cool: daytime highs average 15 °C and nights drop to about 10 °C.
Can you swim in Edinburgh in September?
Only if you don't mind cold water: in September the sea averages just 13.6 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Edinburgh in September?
Rain is frequent, with about 11 rainy days and 58 mm in total.
Edinburgh month by month
The whole year in EdinburghAll destinations: United Kingdom
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)