Don't forget an umbrella - this week is going to get off to a cold and wet start.
Met Eireann has issued a rainfall warning which will affect 20 counties.
It has forecast heavy rain will batter the country, and some parts are expected to be liable to flooding.
In Dublin today, it will be a cloudy day with rain which will be "heavy and thundery" at times with the potential for high volumes and localised flooding.
The heaviest rain is forecast for the morning and again later in the day.
A status yellow rainfall warning is in place until midnight tonight in Munster and Connacht, as well as countes Carlow, Kildare, Kilkenny, Laois, Longford, Wexford, Wicklow, Offaly and Westmeath.
There is potential for flooding on already saturated or waterlogged ground.
According to Met Eireann forecaster Vincent O'Shea, heavy rain and blustery showers in many areas will continue over the coming days.
"The main feature of the next couple of days will be the heavy rainfall but there won't be any extreme weather," he said.
"There are passing heavy showers and heavy rain countrywide.
"While strong winds won't be of concern, parts of the country may be at risk of flooding.
"It will clear up after Tuesday but there will still be some passing showers, but it will be predominantly dry from Tuesday."
Tomorrow is due to be wet and windy with strong gusts along southern coasts. However, there will be something of an improvement on Wednesday, with some sunny spells and moderate breezes.