See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
12°
Light Rain
Feels Like: 12°
Min: 11°
Max: 15°
The next few hours will be overcast, with today reaching 15°C and dropping to 10°C. The coming days will be drizzle throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:29
Sunrise
19:10
Sunset
Moon
Waxing Gibbous
18:45
Moonrise
05:41
Moonset
Daily Forecast
Today
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Air Quality Data Available
Upgrade to access real-time air quality data for Portlaoise.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Portlaoise.
View stargazing scoreWeather in Portlaoise today, September 25, 2026
Expect unsettled, showery conditions in Portlaoise on September 25, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans. Early hours look the most unsettled, with rain probability near 64% by 04:00. The thickest cloud arrives around 04:00, reaching about 100%.
Expect highs of 15°C and cooler readings close to 11°C. The air stays humid, with relative humidity between 67% and 94% and the peak around 07:00. A lighter breeze peaks around 15:00 near 5.3 km/h.
The afternoon should feel quieter than the damp start, with rain probability easing to about 0% after morning values near 64%. Cloud cover stays around 100% by 12:00. Visibility holds near 25.9 km, though it can fall to 7.2 km. The sun rises at 07:29 and sets at 19:10, for a total of 11 hours 40 minutes of sunlight today.
Taken together, Portlaoise looks wet enough on September 25, 2026 that flexible outdoor plans work best, with temperatures peaking near 15°C.
Frequently asked questions about weather in Portlaoise
How warm does it get in Portlaoise?
The warmest month in Portlaoise is July, with average high temperatures of 19°C. The average temperature during this period is around 16°C.
How cold does it get in Portlaoise?
The coldest month in Portlaoise is January, with average low temperatures of 3°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Portlaoise?
The wettest month in Portlaoise is October, with an average of 88mm of precipitation.
What is the driest time of year in Portlaoise?
The driest month in Portlaoise is May, with an average of 58mm of precipitation.
Explore more weather forecasts
- Tullamore, Leinster
- Dublin, Leinster
- Carlow, Leinster
- Cork, Munster
- Droichead Nua, Leinster
- Limerick, Munster
- Kilkenny, Leinster
- Galway, Connacht
- Naas, Leinster
- Tallaght, Leinster
- An Muileann gCearr, Leinster
- Waterford, Munster
- Athlone, Leinster
- Swords, Leinster
- Celbridge, Leinster
- Drogheda, Leinster
