Killarney Weather in September

Killarney in September sees moderate temperatures, with highs around 17°C (63°F) and overnight lows of 10°C (50°F). It's the driest month of the year, with very little rainfall to worry about.

Rainfall in Killarney in September

Expect the least amount of rain this month, providing an excellent opportunity for outdoor activities. Enjoy the clearest skies and driest conditions of the year. Historically, September sees about 19 days of rain, with a monthly average of 93 mm (3.7 in). Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Killarney in September

In September, Killarney gets moderate temperatures, with highs of 17°C (63°F). Nights cool to around 10°C (50°F). Conditions are often most pleasant around the middle of the day. With lows around 10°C (50°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Killarney in September

The city usually sees around 118 hours of sunlight, indicating a moderately sunny period.

If your ideal day consists of dry skies and pleasant temperatures, June typically offers the best circumstances for Killarney.