Average temperatures, rainfall and packing tips for Dublin, Ireland in January
January in Dublin is typically cool, with average daytime highs around 8°C and nights near 3°C. It is usually the coldest month of the year in Dublin.
Expect some rain: around 64 mm falls in Dublin during January on average.
If your dates are flexible, the most comfortable months in Dublin are usually July and August.
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In January, Dublin averages a daytime high of about 8°C and a night-time low of around 3°C, based on recent historical data. That makes it the coldest month of the year there.
Expect some rain: around 64 mm falls in Dublin during January on average.
January is a workable time to visit Dublin, with cool days - just pack accordingly. If your dates are flexible, the most comfortable months in Dublin are usually July and August.