Ireland vs Portugal

Portugal is cheaper than Ireland — $1,533/mo vs $2,616/mo. Ireland is pricier than 35 of 41 European countries; Portugal is cheaper than 25 of 41 European countries.

Portugal is safer than Ireland — 2.9/5 vs 2.7/5. Ireland is less safe than 25 of 41 European countries; Portugal is less safe than 23 of 41 European countries.

Portugal scores higher on mobility than Ireland — 3.1/5 vs 2.7/5. Ireland is harder to get around than 29 of 41 European countries; Portugal is easier to get around than 23 of 41 European countries.

Ireland scores higher on culture than Portugal — 3.9/5 vs 3.4/5. Ireland is richer in culture than 34 of 41 European countries; Portugal is lighter on culture than 24 of 41 European countries.

Ireland's passport reaches 104 destinations visa-free to Portugal's 102 — Ireland opens more doors without a visa. Passport strength shifts over years of naturalisation, not months of planning, so it's a long-horizon footnote — not scored in the tally.

Portugal is better connected than Ireland — 73M passengers/yr vs 42M passengers/yr. Ireland is busier than 53 of 87 countries worldwide; Portugal is busier than 61 of 87 countries worldwide. Ireland sees ~9 air passengers per resident a year; Portugal sees ~7 air passengers per resident a year — a derived figure, not itself ranked.

Ireland runs -13°C to 23°C for most people; Portugal runs -1°C to 32°C for most people. Depends on you — which range fits your tolerance is the real question here, not a score.