Weather · Shannon, Ireland
Shannon Weather in September
Expect mild, wet in Shannon through September: highs near 18°C, lows around 12°C, 130mm of rain across the month. It's a reasonable time to visit.
Avg high
18°C
64°F
Avg low
12°C
54°F
Rainfall
130mm
#2 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Bring a compact umbrella for the odd shower.
Timing a trip around the weather? A Local Friend in Shannon builds it around the season for you.