Cork Weather in September

September in Cork brings moderate temperatures around 18°C (64°F) during the day, dropping to 12°C (54°F) at night, with quite a bit of rainfall expected, averaging around 77 mm (3 in) for the month.

Rainfall in Cork in September

Historically, approximately 17 days this month are expected to have rain, averaging 77 mm (3 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Cork in September

In September, Cork sees moderate temperatures, with highs of 18°C (64°F). Nights drop to around 12°C (54°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Cork in September

You can expect a moderate amount of sunlight, with approximately 128 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Cork in September

Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in September

The water temperature is 15°C (59°F), chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Cork.