Clearer skies over west Ulster and north Connacht on Saturday afternoon allowed temperatures here rise to between 16 and 17C.
This Copernicus Sentinel-2 satellite image shows close-up views of Killybegs in Donegal, Strabane in Tyrone, and Boyle in Roscommon.
17.1c was recorded at Castlederg, County Tyrone on Saturday, marking the warmest temperature of the year to date on the island of Ireland.
The 16.1c maximum at Finner in Donegal is the highest temperature of 2025 in the Republic of Ireland.
Sunday will be another exceptionally mild day.
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| Boyle |
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| Killybegs |
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| Lifford and Strabane |
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Ireland from Space