Weather Comparison
Side-by-side weather comparison for September
| Metric | Dublin | Edinburgh | Better |
|---|---|---|---|
| Average HighHigher is warmer | 17°C (63°F)▲ | 15°C (59°F) | Dublin |
| Average LowHigher is milder | 11°C (52°F)▲ | 10°C (50°F) | Dublin |
| Rain DaysFewer is drier | 12 days | 11 days▲ | Edinburgh |
| PrecipitationLess is drier | 70 mm | 61 mm▲ | Edinburgh |
| Sunshine HoursMore is sunnier | 8h/day | 8h/day | Tie |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 21 km/h | 21 km/h | Tie |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Edinburgh edges ahead as the better destination in September. Edinburgh offers 8 hours of daily sunshine with only 11 rain days, while Dublin sees 8 sunshine hours and 12 rain days.
Dublin sits in the comfortable travel range at 17°C. Edinburgh is also comfortable at 15°C.
For travelers who prioritize dry weather, Edinburgh is the stronger choice in September.
Dublin reaches an average high of 17°C (63°F) and drops to 11°C (52°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.
Edinburgh averages 15°C (59°F) for the high and 10°C (50°F) for the low, with a daily range of 5°C. The 2°C difference is noticeable but not dramatic.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.
Dublin receives approximately 70 mm of rainfall across 12 rain days during September. You can expect rain roughly every other day.
Edinburgh sees 61 mm over 11 rain days. That makes Edinburgh the drier option by 1 rain day and 9 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 17°C, lows of 11°C, 12 rain days
Highs of 15°C, lows of 10°C, 11 rain days
Pack for both: warm layers, a mid-weight jacket, long trousers, waterproof jacket, compact umbrella, waterproof shoes. These items are useful in either destination during September.
The table below shows average high temperatures and rain days for every month. September is highlighted for quick reference.
| Month | Dublin | Edinburgh | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 8°C | 13d | 6°C | 14d |
| Feb | 8°C | 12d | 6°C | 12d |
| Mar | 10°C | 12d | 8°C | 13d |
| Apr | 12°C | 14d | 10°C | 12d |
| May | 15°C | 14d | 13°C | 13d |
| Jun | 17°C | 13d | 16°C | 14d |
| Jul | 19°C | 15d | 18°C | 14d |
| Aug | 19°C | 14d | 17°C | 13d |
| Sep | 17°C | 12d | 15°C | 11d |
| Oct | 13°C | 12d | 12°C | 13d |
| Nov | 10°C | 13d | 8°C | 14d |
| Dec | 8°C | 13d | 6°C | 14d |
Dublin Weather in September
Full forecast, packing tips, and activities
Edinburgh Weather in September
Full forecast, packing tips, and activities