Characteristically, the close of September in Ireland marks a transition from summer to autumn. Expect daytime temperatures averaging between 10 and 15 degrees Celsius (50 and 59 degrees Fahrenheit), though fluctuations are common. Rainfall increases compared to the summer months, and sunshine hours decrease, yet periods of clear, bright weather are still possible. This period experiences shifting weather patterns, influenced by the Atlantic Ocean and its propensity for changeable conditions.
Understanding the typical climate of this period is crucial for travelers planning trips to Ireland. Packing layered clothing allows for adjustments to fluctuating temperatures and unpredictable showers. This time of year offers a unique perspective on the Irish landscape, with the transition to autumnal colors beginning to emerge across the countryside. Historically, this period signified the end of the harvest season and the beginning of preparations for winter.