This Sunday, September 13th, Ireland wakes to a noticeably mild, perhaps even humid, atmosphere. If you're looking outside, you'll likely see some mist or fog, especially in lower areas. The good news is that these conditions should lift as the morning goes on. We're looking at a mostly cloudy but largely dry day. "Mostly cloudy" isn't exactly ideal for a Sunday, but it beats constant rain.

Any showers today will be pretty isolated, so you're unlikely to get caught out unless you're particularly unlucky. If you're planning a walk or a visit to a local market, you should be fine. Just keep an eye on the sky. Temperatures are a highlight, with highs of 16 to 21 degrees expected. The south and east will see the warmest weather, a nice bonus for mid-September. Winds will be light, from the south or variable, so no strong breezes to worry about.

Tonight: Mild, Humid, and Rain Approaching

Tonight, the largely cloudy skies continue. The morning's mist and fog are set to return, potentially reducing visibility. Most places will stay dry through the night, with perhaps a few scattered spots of drizzle, nothing significant. However, a change is coming, especially for the southwest. Showery rain is expected to move into that region towards morning, and it could be quite heavy at times.

If you're out tonight, or just heading to bed, you'll notice it's another mild and humid one. Temperatures aren't expected to drop below a comfortable 12 to 16 degrees, which is quite good for this time of year. Light to moderate southerly winds will keep things moving gently. So, while most of the country enjoys a relatively dry night, those in the southwest should prepare for heavier rain by dawn.

Monday: A Wet Start for Some, Widespread Rain Later

Monday, the start of the working week, brings a more unsettled picture. The showery rain mentioned for the southwest will be active across the south and west on Monday morning, and it's expected to be heavy at times. If your commute takes you through these areas, be ready for wet conditions.

Meanwhile, the north and east will have a drier start with occasional patches of sunshine. It'll almost feel like two different countries to begin with! But don't get too comfortable, because that rain will become widespread across the country in the afternoon and evening. And yes, it will be heavy at times. We're also looking at mist and hill fog developing, which can make driving tricky, so exercise caution.

Despite the rain, it will remain warm and humid, with highest temperatures ranging from 17 to a rather balmy 23 degrees. Winds will start light to moderate southerly but will increase to moderate to fresh through the day. So, Monday is definitely a day for rain gear, no matter where you are.

The Week Ahead: Changeable and Cooler

The national outlook for the rest of the week suggests a shift towards cooler and more changeable weather, with rain or showers making regular appearances.

Monday Night

After Monday's widespread rain, the evening will see those outbreaks of rain, mist, and hill fog gradually clear eastwards. Following this, we can expect clear spells and scattered showers. Winds will be moderate to fresh southwesterly, easing and becoming westerly as the rain moves on. It will be very mild early in the night, but temperatures will drop to between 11 and 14 degrees overnight, bringing a cooler feel.

Tuesday

Tuesday promises a brighter, cooler, and fresher day. We'll see a mix of sunny spells and scattered showers. Temperatures will be noticeably lower than Monday, with highs of 15 to 18 degrees, accompanied by a moderate northwesterly breeze. This sounds like a much more typical autumn day, to be honest.

Tuesday Night

Showers will become isolated during Tuesday night, mainly affecting the north and west. Lowest temperatures will be between 10 and 13 degrees, with light to moderate northwesterly winds.

Wednesday

Wednesday morning looks mostly dry with some sunny spells and isolated showers. However, cloud cover will increase from the west through the afternoon, potentially bringing some patches of drizzle. Top temperatures will be 14 to 17 degrees in a moderate northwest to southwest wind.

Wednesday Night

Cloudy conditions with patches of drizzle are expected early on Wednesday night, before a band of rain tracks eastwards across the country. This rain will clear quickly, making way for clear spells and more showers. Lowest temperatures will range from 9 to 13 degrees, with moderate southwest to west winds.

Thursday

Thursday will be bright and breezy, offering sunshine and scattered blustery showers. There's a chance of cloudier conditions and longer spells of rain in northern areas. Highest temperatures will be 13 to 17 degrees, with fresh and gusty westerly winds.

Rest of the Week

The general outlook for the remainder of the week indicates changeable weather. We can expect further rain and showers at times, interspersed with some dry and bright periods. Daytime temperatures will generally hover in the mid to high teens.

It seems we're firmly into that classic Irish autumn pattern, where you need to be prepared for all four seasons in one day! Keep an eye on the latest updates from Met Éireann for the most accurate information as the week progresses.