St Patrick’s Day weather in Ireland: the honest forecast
St Patrick’s Day is Wednesday 17 March 2027, in 151 days. That is beyond the reach of a reliable forecast, so here is what the weather is usually like and when to check back.
The real forecast for this will appear on this page from about Friday 12 March. Until then, anything claiming to know is guessing.
What is St Patrick’s Day weather usually like?
Mid-March is early spring: cool, changeable and often breezy. Daytime highs are usually 8 to 11°C, showers are common, and a bright, dry morning can turn wet by the time the parade is over.
What to do about it
Wear layers and a waterproof. Parade routes are exposed, so a hat and gloves are worth carrying even on a bright morning.
Quick answers: St Patrick’s Day
- Is St Patrick’s Day usually wet?
- Often showery, but rarely a washout. Mid-March days are cool, around 8 to 11°C, and a bright morning can turn showery by the afternoon.
- Will it be cold for the parade?
- Yes, usually. It is early spring and parade routes are exposed, so warm layers, a hat and a waterproof are sensible.
- Does it ever snow on St Patrick’s Day?
- It is uncommon, but cold snaps in March do happen. Check the forecast a few days before you travel.