Rain gear such as an umbrella, boots and a rain jacket are all musts if traveling to Ireland in September. September is one of Ireland's wettest months and temperatures are cool, with highs topping out at 55 degrees Fahrenheit and lows in the 40s.
Rain in Ireland in September is less of a torrential downpour and more of a continuous, soft rain that lets up only occasionally during the day with periods of sun. Waterproof gear of some type is a must in order to continue enjoying the outdoors of Ireland during this month.
Locals in Ireland do not wear oversized slickers or rain ponchos, but rather waterproof trench coats that look stylish with any outfit or layers beneath them. A high quality umbrella is also useful in protecting from continuously falling rain. Rubber boots are not usually seen in Ireland either, but instead tall, sturdy boots made of either waterproof material or waterproofed with a chemical spray for this purpose. Hiking boots or boots with a low heel enables a person to walk comfortably throughout the day.
Layers of thicker clothes are ideal to protect from the damp and cold. Travelers to Ireland in September are unlikely to need thinner materials such as linen or beach gear such as sunglasses.