Updated: 5.15pm
A yellow weather warning is in place for 10 counties in the Republic, while a similar warning remains in place in the North.
Met Éireann issued the thunderstorm warning for counties Cavan, Monaghan, Longford, Louth, Meath, Westmeath, Offaly, Leitrim, Roscommon and Galway shortly before 3.30pm on Monday.
The warning for the six counties in the North had been in place from midday.
The forecaster is predicting heavy showers and thunderstorms which "may lead to localised flooding and hazardous driving conditions".
The warning in the Republic is due to remain in place until 10pm on Monday, while the North's alert will end at 9pm.
The Thunderstorm warning has been updated to include Roscommon, Leitrim & Galway.https://t.co/Xg3aMJlyuS pic.twitter.com/I9muQwi3FC
— Met Éireann (@MetEireann) August 9, 2021
A mixed week is on the cards with showers and rain expected throughout. Tuesday will be largely dry day for many, with just a few light showers about, mainly in the west.
It will be a rather cloudy day overall, with the best of the sunny breaks occurring during the morning or early afternoon. Highest temperatures of 17-20 degrees, with light southwest or variable breezes.
Wednesday is set to be worse, with outbreaks of occasionally heavy rain which will push eastwards over the country during the morning and early afternoon.
Brighter, clearer and sunnier conditions with just isolated showers will develop in Atlantic counties by late morning, however, before gradually extending elsewhere through the rest of the day with lows of 9-13 degrees are expected.
The national forecaster said current indications suggest Thursday will be a rather breezy or blustery day with sunny spells and showers.
The focus of the heaviest showers looks likely to be in the west and northwest. Moderate to fresh and gusty southwest winds will be strong to near gale on coasts. Maximum temperatures will range from 17-19 degrees.
Sunny spells and showers for Friday, with the showers mainly affecting the midlands, west and north. Highs of 16-20 degrees in mostly moderate southwest winds, which will be fresh to strong and gusty up along western and northwestern coasts.
Cloudy with outbreaks of rain or drizzle this morning. Brighter this afternoon with showers, but some will be heavy with the risk of spot flooding, especially in the midlands & east. Becoming drier in western areas later this afternoon. Highs of 17 to 19C. pic.twitter.com/rre4FSJ7wu
— Met Éireann (@MetEireann) August 9, 2021
