Shannon in september: average Weather, Temperature and Climate
Weather in Shannon in september 2025
The weather in Shannon in the month of september comes from statistical datas on the last years. You can view the weather statistics the entire 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
Fog
35% of time
24%
18%
12%
Weather at 12pm
63°F
Cloudy
38% of time
27%
19%
13%
Weather at 6pm
59°F
Partly Cloudy
28% of time
28%
21%
17%
Weather at 3am
52°F
34%
20%
17%
15%
Evolution of daily average temperature and precipitation in Shannon in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Shannon in september.
The climate of Shannon in september is tolerable
In september in Shannon, the climate is wet (with 3.5in of precipitation over 5 days). It should be noted an improvement from the previous month since in august it receives an average of 4in of precipitation over 6 days.
The climate is fairly fresh in that locality september, but it is endurable by dressing cosy. The high seasonal norm is 63°F. In the morning the temperature drops to 52°F. Thus, the mean temperature average on this month of september in Shannon is 58°F. Note that seasonal normals are in contrast with those observed in Shannon in september with a maximum record of 83°F in 2021 and a minimum record of 36°F in 2010. You can hope to have about 10 days with temperatures up to 65°F, or 33% of the month.
On average, in Shannon, the days of september last 12:40. Sunrise is at 06:10 and sunset is at 18:50.
With proper weather, this month is okay (but not the best) to go in that area in Ireland.
September: another location in Ireland?
If you want to go to Ireland in september, there are destinations with better weather than Shannon:
In september, Dublin, Cork, Ardmore, Dalkey Island, Rosslare and Tramore have good weather.
Seasonal average climate and temperature of Shannon in september
Check below seasonal norms These datas are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 58°F | ||||
| Highest temperature | 63°F | ||||
| Lowest temperature | 52°F | ||||
| Highest record temperature | 83°F (2021) | ||||
| Lowest record temperature | 36°F (2010) | ||||
| Number of days at +65°F | 10 day(s) (33%) | ||||
| Sea temperature | |||||
| Average sea temperature | 60°F | ||||
| Lowest sea temperature | 58°F | ||||
| Highest sea temperature | 62°F | ||||
| Wind | |||||
| Wind speed | 20km/h | ||||
| Wind temperature | 50°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.5in | ||||
| Number of days with rainfall | 5 day(s) (16%) | ||||
| Record daily rainfall | 2.4in (2015) | ||||
| Other climate data | |||||
| Humidity | 95% | ||||
| Visibility | 7.9km | ||||
| Cloud cover | 61% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:10 | ||||
| Time of sunset | 18:50 | ||||
| Length of day | 12:40 | ||||
| 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 Shannon in september 2024:
50°F to 68°F
54°F to 59°F
56°F to 63°F
54°F to 59°F
45°F to 65°F
56°F to 76°F
56°F to 72°F
56°F to 67°F
50°F to 61°F
54°F to 58°F
50°F to 56°F
43°F to 56°F
38°F to 54°F
50°F to 67°F
56°F to 65°F
47°F to 67°F
49°F to 72°F
47°F to 70°F
49°F to 70°F
49°F to 70°F
49°F to 68°F
52°F to 59°F
52°F to 67°F
52°F to 58°F
47°F to 58°F
45°F to 50°F
47°F to 54°F
45°F to 58°F
50°F to 54°F
52°F to 59°F
Map: other cities in Ireland in september
Cities near Shannon:
| Ennis in september | tolerable weather |
| Limerick in september | tolerable weather |
| Newcastle West in september | tolerable weather |
| Burren National Park in september | tolerable weather |
| Cliffs of Moher in september | tolerable weather |
| Listowel in september | tolerable weather |
| Kilkee in september | tolerable weather |
| Lisvarrinane in september | tolerable weather |
| Galway in september | tolerable weather |
| Mallow in september | good weather |
| Aran Islands in september | tolerable weather |
| Cashel in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Shannon
perfect weather
good
tolerable
bad
very bad
Weather data for Shannon in september:
Weather data for Shannon for september are derived from an average of the weather forecast since 2009 in Shannon. There is a margin of error and these forecasts are to be considered as general information only. The weather in Shannon 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 Shannon.