21 September 2026 13:00

Today - Monday 21st September

Mostly dry this afternoon and evening with spells of sunshine. However, the odd patch of mist and drizzle is possible. Warm and humid with highest temperatures of 17 to 23 degrees, coolest in the west and warmest in the east in a light to moderate southwesterly breeze.

Tonight - Monday 21st September

Tonight will be mild, humid and mainly dry with some clear spells and patches of drizzle, mist and fog. Rain and drizzle will develop along the northwest coast by morning. Lowest temperatures of 12 to 16 degrees in a light southerly breeze.

Tomorrow - Tuesday 22nd September

Tuesday will be mainly dry over Leinster and Munster with occasional bright spells and isolated showers. Rain and drizzle in the northwest during the morning will slowly spread across Ulster and Connacht through the afternoon and evening. Highest temperatures of 16 to 20 degrees for most but between 14 and 16 degrees in the northwest in a light southerly breeze.

Outlook

Overview: Turning a bit cooler with a fair amount of dry weather and some rain or showers at times.

On Tuesday night, rain in Ulster, Connacht and west Munster will gradually move southeastwards to almost all areas overnight. Lowest temperatures of 11 to 14 degrees with light to moderate south to southwest breezes.

Through Wednesday morning, rain will gradually clear to the southeast. Drier, brighter weather will follow from the west with sunny spells developing. Cooler with highest temperatures of 14 to 17 degrees and light to moderate northwesterly winds.

Wednesday night will be dry with clear spells. Cloud will increase in the west overnight. Lowest temperatures of 6 to 9 degrees with light variable winds backing southeasterly.

Thursday will start off dry with bright or sunny spells in the east. Cloudier further west with rain developing in the west and northwest by early afternoon and then spreading southwards through the rest of the day. Highest temperatures of 15 to 19 degrees with fresh, gusty southerly winds.

On Thursday night, rain will continue for a time and will clear to the east overnight. Lowest temperatures of 10 to 13 degrees with winds becoming southwesterly and easing as rain clears.

Friday will be mainly dry with bright or sunny spells and perhaps a few showers. Highest temperatures of 15 to 18 degrees with moderate to fresh west to southwest winds.

Next weekend looks like it will be unsettled with rain or showers at times and with temperatures in the mid to high teens.