Donegal in september: average Weather, Temperature and Climate
Weather in Donegal in september 2025
The weather in Donegal in the month of september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather
Weather at 6am
52°F
Moderate rain at times
27% of time
22%
17%
16%
Weather at 12pm
59°F
Moderate rain at times
34% of time
29%
16%
12%
Weather at 6pm
58°F
Moderate rain at times
38% of time
19%
18%
14%
Weather at 3am
52°F
28%
18%
16%
15%
Evolution of daily average temperature and precipitation in Donegal in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Donegal in september.
The climate of Donegal in september is tolerable
In september in Donegal, the climate is wet (with 5.1in of precipitation over 9 days). It should be noted an improvement from the previous month since in august it receives an average of 6.3in of rainfall over 10 days.
The climate is quite cool in that locality this month, but it is livable when dressing cosy. The thermometer averaged maximum of 61°F. The minimum is 52°F. Thus, the mean temperature average on this month of september in Donegal is 56°F. Note that seasonal normals are in contrast with those observed in Donegal in the month of september with a maximum record of 77°F in 2021 and a minimum record of 36°F in 2010. You can plan to have about 4 days with temperatures up to 65°F, or 13% of time.
In september in Donegal, the days on average last 12:43. The sun rises at 06:05 and sets at 18:48.
With proper weather, september is okay (but not the best) to go in this city in Ireland.
September: another location in Ireland?
If you want to go to Ireland in september, there are destinations with better weather than Donegal:
In september, Dublin, Cork, Ardmore, Dalkey Island, Rosslare and Tramore have good weather.
Seasonal average climate and temperature of Donegal in september
Check below seasonal norms These statistics are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 56°F | ||||
| Highest temperature | 61°F | ||||
| Lowest temperature | 52°F | ||||
| Highest record temperature | 77°F (2021) | ||||
| Lowest record temperature | 36°F (2010) | ||||
| Number of days at +65°F | 4 day(s) (13%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 56°F | ||||
| Highest sea temperature | 60°F | ||||
| Wind | |||||
| Wind speed | 21km/h | ||||
| Wind temperature | 49°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5.1in | ||||
| Number of days with rainfall | 9 day(s) (31%) | ||||
| Record daily rainfall | 1.9in (2010) | ||||
| Other climate data | |||||
| Humidity | 93% | ||||
| Visibility | 8.35km | ||||
| Cloud cover | 65% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:05 | ||||
| Time of sunset | 18:48 | ||||
| Length of day | 12:43 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Donegal in september 2024:
52°F to 65°F
56°F to 59°F
54°F to 59°F
52°F to 58°F
47°F to 65°F
56°F to 74°F
54°F to 70°F
54°F to 61°F
50°F to 58°F
52°F to 56°F
49°F to 54°F
45°F to 54°F
41°F to 52°F
54°F to 59°F
54°F to 59°F
50°F to 63°F
56°F to 70°F
49°F to 68°F
49°F to 68°F
50°F to 68°F
50°F to 67°F
49°F to 67°F
50°F to 61°F
52°F to 54°F
45°F to 54°F
47°F to 49°F
49°F to 52°F
45°F to 56°F
47°F to 56°F
50°F to 54°F
Map: other cities in Ireland in september
Cities near Donegal:
| Ballyshannon in september | tolerable weather |
| Killybegs in september | tolerable weather |
| Bundoran in september | tolerable weather |
| Ballybofey in september | bad weather |
| Dungloe in september | tolerable weather |
| Gleann Cholm Cille in september | tolerable weather |
| Streedagh Point in september | tolerable weather |
| Letterkenny in september | bad weather |
| Derrybeg in september | tolerable weather |
| Sligo in september | tolerable weather |
| Dunfanaghy in september | tolerable weather |
| Buncrana in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Donegal
perfect weather
good
tolerable
bad
very bad
Weather data for Donegal in september:
Weather data for Donegal for september are derived from an average of the weather forecast since 2009 in Donegal. There is a margin of error and these forecasts are to be considered as general information only. The weather in Donegal can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Donegal.