National Forecast

Issued at: 04 August 2026 15:00

TODAY - Tuesday 4th August

Many areas will dry for the rest of the day with some sunny spells. A few heavy thundery showers across the East and Northeast too, though with lightning. Humid with highest temperatures of 18 to 26 degrees, warmest in the East. Westerly winds will be gusty around any showers.

TONIGHT

Mainly dry at first tonight with just isolated showers and with some clear spells, the best of these across the east and south. Cloud will increase overnight with a scattering of showers moving in from the west and with some persistent rain and drizzle spreading into parts of Ulster, north Connacht and possibly north Leinster. Lowest temperatures of 10 to 14 degrees in mostly moderate westerly winds, increasing fresh to strong and gusty in western and northwestern coastal parts.

TOMORROW - Wednesday 5th August

Tomorrow, Wednesday, will be a rather windy day, especially further north. It will be cloudy with outbreaks of rain affecting much of Ulster, and mainly north Connacht and north Leinster, accompanied by fresh to strong and occasionally gusty westerly winds, reaching near gale force in northwestern coastal parts. The rain will be heaviest and most persistent in the northwest, with some surface flooding possible. It will be much drier and brighter elsewhere with some sunny spells and well scattered showers with mostly moderate to fresh and occasionally gusty westerly winds, strong at times. Highest temperatures ranging from 14 degrees in the northwest to 19 or 20 degrees in the southeast.

National Outlook

Fresher with a good deal of dry weather on Thursday and probably for many on Friday too, with just a a scattering of showers. The weekend will be more unsettled for a time, with rain Friday night and Saturday, followed by a brighter day on Sunday with sunshine and a scattering of showers.

Wednesday Night: Cloudy for a time across some northern areas, with outbreaks of rain, but the rain will ease and clear eastwards through the first half of the night. Otherwise there'll be a mix of cloud, clear spells and a scattering of showers, these becoming mostly confined to parts of the west and north. Lowest temperatures of 9 to 13 degrees with the westerly winds continuing to ease mostly light to moderate.

Thursday: A bright day with some spells of sunshine, hazy in parts, and overall mainly dry for most. There'll be some scattered showers around too though, especially further to the north and west. Highest temperatures of 15 to 19 degrees in light to moderate west to northwest winds.

Thursday night: It looks like Thursday night will be mostly dry in many areas with a mix of cloud and clear spells, though with some scattered showers in parts of the west and north. Lowest temperatures of 9 to 13 degrees in light westerly breezes, becoming southerly or variable.

Friday: At this stage it looks like Friday will also bring a good deal of dry weather for most, with a mix of cloud and sunny spells and with just a few scattered showers. It is likely to become cloudier though further to the southwest, west and northwest, with some rain and drizzle starting to move in, most likely later in the day, though there is some uncertainty as regards timing. Highest temperatures of 16 to 21 degrees in mostly light to moderate southwest winds, freshening near western and northwestern coasts.

Friday night: On Friday night outbreaks of rain in parts of the southwest, west and northwest, will spread further eastwards, and some of that will be on the heavier side further west. Milder than previous nights with lowest temperatures of 11 to 15 degrees in mostly moderate southerly winds, fresher in coastal parts of the west.

Saturday: Saturday looks set to be a cloudy day for a time with outbreaks of rain, some of that possibly heavy with the chance of a few thundery downpours. The rain will start to clear eastwards later on, with some bright spells following. Highest temperatures of 16 to 20 degrees in moderate, occasionally fresh, southerly winds veering westerly later.

Sunday: At this stage it looks like Sunday will be a bright, fresh day with sunshine with plenty of dry weather, but with some showers too, especially further to the north and west. Rather breezy and fresh with highest temperatures of 15 to 19 degrees in moderate to fresh southwest to west winds.