Belfast weather in September (County Antrim, Ireland)
Curious about the September weather in Belfast? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.
In September, Belfast generally has moderate temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 17°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 10°C.
Belfast in September usually receives moderate rainfall, averaging around 77 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 19 days of the month will see rainfall.
The area enjoys a balanced 109 hours of sunlight. Ensuring it's neither too overcast nor too sunny.
If you prefer dry days with pleasant temperatures, July typically offers the best circumstances. While January, February and December tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Belfast climate page with graphs.
Belfast, monthly averages in September
Where to go in Ireland in September
Find out more about the weather in Ireland in September and which places have the best weather conditions in this month.
So, what should you wear in Belfast in September?
For visitors traveling to Belfast, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes. With a water temperature of around 13°C there is no need to bring your swimwear.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Belfast.
Our site offers climate and forecast data for every country in the world. Are you going to Ireland? On this website you can find historical weather averages for many cities in Ireland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.