They also revealed what day next week things are expected to take a turn for the worst weather-wise.
Met Éireann have issued an update on the "hottest day of the year" as temperatures are expected to reach 26 degrees in parts of the country on Sunday.
The weather experts say it will be dry and warm in most areas of Ireland with sunny spells, especially in the east and south.
Maximum temperatures are expected to reach 19 to 24 degrees generally, however, in Atlantic coastal counties the maximum will be 15 to 19 degrees, and between 20 to 26 in the East.
Forecaster Gerry Murphy said earlier this week: "Sunday looks like being the warmest day of the year so far with temperatures reaching between 20 and 26 degrees - 25 or 26 degrees in parts of the eastern half of the country".
Monday will also be bright and mainly dry, with sunny spells and just a few isolated light showers in the north and northwest and maximum temperatures of 14 to 19 degrees.
However, the good weather could be coming to an end as Met Éireann forecasted "changeable weather in the week ahead, with some rain at times".
They added that there will be "overall a good deal of dry weather", however, conditions will turn cooler and more unsettled from midweek onwards.
On Tuesday, the midlands, east and south will be mainly dry, with some bright or sunny spells and it will be warm and humid here, with maximum temperatures of 19 to 22 degrees.
The southwest, west, and northwest will be cooler and cloudy, with patches of rain and drizzle. It will also be a breezy day, with moderate to fresh south to southwest winds, strong on Connacht and west Ulster coasts.
Wednesday will see conditions brightening up from the west, with some sunny spells developing and just a few scattered showers, mainly in Atlantic coastal counties.
It will remain relatively cool, with maximum temperatures of 14 to 18 degrees, in light to moderate southwesterly breezes, fresh to strong on northwest coasts.
Thursday will be a mostly cool, bright day, with sunny spells and scattered showers, most of the showers in the western half of the country. Maximum temperatures will hit 14 to 17 degrees.
Currently, Friday is looking mainly dry, with sunny spells and light northerly or variable breezes and highest temperatures between 15 to 19 degrees. However, the outlook for the weekend is uncertain, with early indications suggesting that it will be "changeable and unsettled".
