Cloudy skies over an Irish landscape with a hint of sunshine

Ireland Weather Forecast: Wednesday 16 September

Your Mid-Week Weather Rundown: What to Expect Across Ireland Today

Here we are, already mid-September. It feels like just yesterday we were all hoping for a heatwave that never quite materialized, and now autumn is definitely here. If you're wondering what to expect from the skies above Ireland today, Wednesday, September 16, 2026, it's a classic Irish mixed bag. We're looking at a day that starts off reasonably pleasant, but don't get too comfortable, especially if you're out west.

Cloudy skies over an Irish landscape with a hint of sunshine

The morning kicks off with that familiar blend of cloud and sunshine. You know the drill: a bit of brightness, a bit of grey, keeping us on our toes. There might be a few isolated showers dotted around, but nothing too dramatic to start your day. So, if you're heading out for an early walk or the school run, you should be mostly fine.

However, as the afternoon rolls in, the clouds are set to thicken up. We'll see some patchy drizzle making an appearance. It's that kind of weather where you might not need a full-on rain jacket, but a water-resistant layer wouldn't go amiss. It's the sort of drizzle that just makes things feel a bit damp, rather than a proper soaking.

Atlantic Front Moving In: Get Ready for Wind and Rain

Now, here's where things get a bit more active. If you're in the Atlantic counties, particularly along the west coast, you'll want to pay close attention to the evening forecast. Met Éireann is predicting that wet and breezy conditions will start moving in from the west. We're talking proper rain and fresh southwesterly winds. So, if you've got plans out west this evening, be prepared for a blustery and damp end to your Wednesday. It sounds like the kind of evening best spent indoors with a cup of tea.

Temperature-wise, we're looking at highs ranging from 13 to 18 degrees Celsius today. As is often the case, the northwest will be feeling the coolest of that range. Winds will generally be light to moderate from the west or southwest for most of the day, but they will definitely be freshening up in the west and northwest as that weather front pushes in.

What's In Store for Tonight and Tomorrow?

As Wednesday turns into Thursday, that wet and breezy weather that hits the Atlantic counties will continue its march eastwards across the country early tonight. So, even if you're in the midlands or further east, you can expect some of that rain to reach you before it clears.

Following that, we'll see some clear spells breaking through, mixed with well-scattered showers for the rest of the night. It won't be a completely dry night for everyone, but the widespread rain should have moved on. Overnight temperatures are expected to drop to between 9 and 12 degrees Celsius. Winds will remain moderate to fresh from the southwest, and still pretty strong along those Atlantic coasts. So, if you live by the sea, you might hear the wind whistling a bit tonight.

Looking ahead to Thursday, September 17, it's shaping up to be another fresh and breezy day. We're in for a mix of sunny spells and scattered showers. These showers will be most frequent across the west and northwest, so if you're in those parts, keep the umbrella handy. Parts of the southeast, however, might get lucky and stay mostly dry. Highs for Thursday will be similar to today, ranging from 13 to 17 degrees Celsius. Winds will be moderate to fresh from the west, remaining strong and gusty along Atlantic coasts. It sounds like a good day for a brisk walk, provided you're dressed for the elements.

A Glimpse into the Weekend and Beyond

It's always good to have an idea of what the weekend holds, especially as autumn brings changeable weather.

Thursday Night: Expect a clear start with very isolated showers. Cloud will then increase in the southwest and spread across the country overnight. Temperatures will be between 9 and 12 degrees, with moderate to fresh west to southwest winds, strong on coasts.

Friday: This looks like a rather wet and breezy morning, with widespread rain, potentially heavy across west and southwest counties. The rain should ease and clear eastwards in the afternoon, with showers developing behind it. It's likely to be a cloudy and dull day overall. Temperatures will be milder, reaching 15 to 19 degrees, with moderate to fresh southwesterly winds.

Saturday: Expect breezy conditions with sunny spells and passing showers, mainly affecting the northern half of the country. Highs of 14 to 18 degrees, coolest in the north. Winds will be moderate to fresh westerly, strong on Atlantic coasts.

Sunday: This day is looking drier but generally cloudy across Ireland. Patchy rain and drizzle might feed in over west coastal counties towards the evening. Temperatures will be between 15 and 18 degrees, mildest in the southwest. Light to moderate westerly winds will back southerly later.

Monday: Another cloudy start with patchy rain and drizzle is on the cards. However, conditions are expected to improve by early afternoon, with more bright spells developing. Light to moderate southwest winds will prevail.

Further Outlook: Current indications suggest high pressure will start to move in over Ireland for the days following Monday. This should bring more settled weather. While we might still see spells of rain and drizzle, there should also be more frequent sunny breaks. Temperatures are expected to remain mild, in the mid to high teens. So, while we're navigating some classic autumnal weather this week, there's a hint of more stable conditions on the horizon.

For the most up-to-date information, it's always a good idea to check the official Met Éireann forecast directly. They have the most accurate and timely updates for specific regions.

So, there you have it. A typical September day in Ireland awaits. Make sure you're dressed appropriately, especially if you're out and about in the west later today. Enjoy the mix, and here's hoping for some of those promised sunny breaks in the coming days!

Share this content: