Ireland and Portugal are two of the countries people most often shortlist together when moving to the EU. Below is an honest side-by-side on the things that shape daily life, with the stronger country marked on each row. On these measures Ireland comes out ahead on 3, Portugal on 6.
Rent is the clearest split: a one-bed runs about EUR 1,700 a month in Ireland against EUR 950 in Portugal, so Portugal saves you roughly EUR 750 every month.
Typical net pay is EUR 2,800 a month in Ireland and EUR 1,300 in Portugal, putting Ireland EUR 1,500 ahead before anything else is counted.
What actually matters is the money left after rent: EUR 1,100 in Ireland against EUR 350 in Portugal, which is where Ireland pulls ahead.
You will get further on English alone in Ireland than in Portugal, which matters most in the first year, before the local language clicks.
The weather is not the same trade either: Ireland is mild, Portugal is warm.