Today
Sunny spells across the south of the country at first this morning, but cloudier further north with patchy light rain, drizzle and mist affecting parts of the Connacht and Ulster.
Becoming mostly cloudy for a time this afternoon, with perhaps the odd spot of drizzle spreading elsewhere, but bright or sunny spells returning towards evening.
Top temperatures 19 to 23 degrees, but a few degrees cooler in the west and northwest.
Winds will be mostly light to moderate westerly, with local sea breezes along eastern and southern coasts.
Tonight
Mostly dry with variable cloud and clear spells at first tonight, but cloudier conditions in the north, with outbreaks of rain and drizzle, will gradually extend southwards to affect much of northern half of the country by morning.
Lows of 8 to 12 degrees.
A few patches of mist and fog forming in the light west to northwest breezes.