September · Ireland
Best time to visit Cork in September Weather, crowds & prices
Weather in Cork in September
Average temperature 14°C, 152 mm of rain, about 18 days with 6+ hours of sunshine and 83% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
6.5/10
Ranked #6 of 12 months
- Avg temp
- 14°C
- Rainfall
- 152 mm
- Humidity
- 83%
- Days with 6h+ sun
- 18
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Cork scores 6.5/10 for sightseeing and cultural travel - an above-average month (#6 of 12). Expect around 14°C, 152 mm of rain, and roughly 18 days with 6+ hours of sunshine this month.
Cork spreads along the River Lee, with the English Market, Shandon bells, and Cobh's harbour within easy reach.
September in Cork: mixed conditions, plan around the weather
Temperatures hover around 14°C (57°F) — the kind of month where neither heat nor cold forces the schedule.
152 mm of rain signals a properly wet month, with only about 18 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 6.5/10 on the same scale — 6th of 12 months, versus 8.2/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, June is materially better in Cork — 1.7 points higher on the same scale.
Frequently asked
- What is the weather like in Cork in September?
- In September, Cork averages 14°C, 152 mm of rain, and about 18 days with 6+ hours of sunshine. Its climate-comfort score is 6.5/10.
- Is September a good time to visit Cork?
- September earns a 6.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cork in September?
- Expect about 152 mm of rain in September. Average humidity is 83% and there are about 18 days with 6+ hours of sunshine.
Curated in Cork
Tickets & experiences
Things to do in Cork
Cork, Ireland. Live activities and tours from GetYourGuide, matched to this destination.