United Kingdom
Edinburgh in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Edinburgh in September is climatically mixed. The average daily high is around 15 °C, and the sea is about 13 °C. With about 14 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
37/100 · #4
Warmth
#4
Dryness
#3
Sun
#6
Sea warmth
#3
Published best categories: City break
Edinburgh · SeptemberPhoto: 瑞丽江的河水 · CC BY-SA 4.0Climate facts
- Average high
- 15 °C
- Average low
- 9 °C
- Sea
- 13 °C
- Rainy days (est.)
- 14 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 87 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 18 | 11 | 16 | 83 | 4.6 | 84 | 3.3 | 14 | 43 |
| September (selected) | 15 | 9 | 14 | 68 | 3.2 | 87 | 3.7 | 13 | 37 |
| October | 12 | 7 | 16 | 92 | 1.7 | 90 | 4.2 | 12 | 22 |
How do the previous and next months compare?
Baseline: September (37/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | +6 | +2.2 °C | +1.8 °C | +2.2 | +15 mm | +1.4 h | -2.3 % | -0.4 m/s | +1 °C |
| October | -15 | -3.7 °C | -2.4 °C | +2.7 | +24.7 mm | -1.5 h | +3.5 % | +0.5 m/s | -1.6 °C |
All twelve months in context
Find a place to stay
Where to stay in Edinburgh
Compare available stays, prices and cancellation terms for Edinburgh on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Edinburgh in September?
The average daily high is around 15 °C, with an average daily low of about 9 °C.
Can you swim in Edinburgh in September?
The sea is about 13 °C (cold).
Does it rain a lot in Edinburgh in September?
The curated estimate is about 14 rainy days per month, not a directly measured long-term average. Total precipitation averages around 68 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Edinburgh?
No month in Edinburgh reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.