| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Shannon in September is mild at 13.5 °C (56.3 °F).
- Afternoons can be very mild with average high temperatures reaching 17.2 °C (63 °F).
- Overnight temperatures are generally quite mild with an average low of 10.1 °C (50.2 °F).
- In September the variation/ range of daily mean temperatures is 7.1 °C (12.8 °F).
- The weather in September is dryish with rain from time to time. Just 82mm (3.2in) of water falls across on average 19 days.
- The heavens above Shannon are somewhat dreary with on average merely 3:34 of beaming solar radiation per day.
- The shortest day is 11:36 long and the longest day is 13:38 long with an average length of 12:37.
- There are approximately 8:48 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 28.9% of daylight hours and cloudy 71.1% of daylight hours.
Check the distance to and compare the Shannon September averages with somewhere beginning with:
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Weather Trend Graph for September in Shannon, Ireland
Navigate to September Weather in Locations Surrounding Shannon:
- Malin Head, Ireland - 314 kms (195.1 miles) NNE
- Ballykelly, Northern Ireland, Uk - 291.1 kms (180.9 miles) NNE
- Belfast-Aldergrove, Uk - 281.1 kms (174.7 miles) NE
- Belfast, Northern Ireland, Uk - 280.4 kms (174.2 miles) NE
- Clones, Ireland - 201.8 kms (125.4 miles) NNE
- Collooney, Sligo, Ireland - 167.8 kms (104.3 miles) N
- Douglas, Isle Of Man, Uk - 336.8 kms (209.3 miles) ENE
- Dublin, Ireland - 195.9 kms (121.8 miles) ENE
- Valley, Uk - 299.6 kms (186.2 miles) ENE
- Birr, Offaly, Ireland - 81.4 kms (50.6 miles) ENE
- Kilkenny, Ireland - 109.6 kms (68.1 miles) E
- Aberystwyth, Wales, Uk - 330.4 kms (205.3 miles) E
- Rosslare, Wexford, Ireland - 182.6 kms (113.5 miles) ESE
- Aberporth, Uk - 301.2 kms (187.1 miles) E
- Cork, Ireland - 93.7 kms (58.2 miles) SSE
- Cork (Ap), Ireland - 99 kms (61.5 miles) SSE