Ireland Weather Forecast Sunday September 20
This Sunday, September 20th, many of us are probably hoping for a break from Ireland's usual unpredictable weather. Good news: today looks quite pleasant across most of the country. Expect a largely bright and sunny morning, a welcome sight as we head deeper into autumn.

Most areas will stay dry, with light winds, which is always a plus. A light breeze can make all the difference, whether you're planning a walk or just enjoying a cup of tea in the garden. As the day moves into the afternoon, we'll still have a mix of cloud and sunny spells, keeping things relatively dry. However, western counties, particularly Connacht, will see more cloud later in the afternoon. Other parts of the country might notice increased cloud cover by evening, but it should mostly stay dry. There might be some very light drizzle in the far west, but nothing significant enough to disrupt plans. Temperatures should be comfortable, ranging from 15 to 18 degrees.
Tonight's Weather: Mild and Humid
Tonight, the weather shifts slightly. It will become cloudier, with possible patchy light drizzle along the coasts of Connacht and Ulster. For most, though, it looks like another dry night. Light southerly breezes will prevail, and it will feel quite humid overnight. Lowest temperatures will be between 13 and 16 degrees. If you're thinking of leaving a window open, it might be a good idea, as it could feel a little muggy.
Looking Ahead: Monday and Beyond
Now, let's look at Monday, September 21st. The start of the week will bring some cloud and mist in the morning. But don't worry, sunny spells are expected to break through by afternoon, bringing more dry weather. What's interesting is that Monday is set to be warmer than the past few days. We're looking at highs of 18 to 23 degrees, and it will remain quite humid with light southwesterly breezes. This is a nice bonus for late September, a chance to enjoy milder temperatures before the colder weather truly sets in.
The broader national outlook suggests a rather mild and humid start to the week. While there will be some rain and drizzle at times, we'll also get plenty of dry interludes.
Monday night should be very mild and humid. Expect mostly dry conditions with some clear spells. However, those familiar mist and drizzle patches might reappear in the west and northwest. Watch for potential fog patches in the south overnight, too. Lowest temperatures will again be in the 13 to 16 degree range, with light to moderate southerly winds.
Tuesday will see a shift. It's expected to become overcast in the morning, with outbreaks of rain. More persistent rain will push across Connacht and Ulster, so if you're in those areas, prepare for a wetter day. Cloud will persist throughout Tuesday, with light southerly winds and highs of 17 to 20 degrees.
Tuesday night will remain cloudy, with rain mainly affecting the west and northwest. Other areas might see drier conditions, but some patchy light rain is possible. Mist patches are also likely to form overnight, with light winds and lows of 11 to 14 degrees.
By Wednesday, it looks like a cloudy, wet, and unsettled start. The good news is that the rain should gradually move off the country in the morning. This will leave cloud for the afternoon, with some dry weather and plenty of clear spells developing. Temperatures will drop a bit, with highs of 14 to 17 degrees and light northwesterly winds.
Looking further ahead, current indications suggest that unsettled weather will return for Thursday. We could see some wet and possibly very windy conditions. So, while the start of the week looks quite pleasant, it seems we might need to brace ourselves for a more typical Irish autumn day later on.
It's always a good idea to check official forecasts, especially if you have outdoor plans. You can find the latest updates directly from Met Éireann (met.ie) for the most accurate information. For now, let's enjoy this relatively calm and pleasant Sunday. Days like these remind us why we love living on this beautiful island, even with its ever-changing skies. Whether you're staying local or heading out for a drive, today's Ireland weather forecast offers a good opportunity to make the most of your weekend.
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