French Polynesia vs New Caledonia

French Polynesia has no monthly cost data yet; New Caledonia has no monthly cost data yet — not enough data to call a winner.

French Polynesia has no safety score data yet; New Caledonia has no safety score data yet — not enough data to call a winner.

French Polynesia has no mobility score data yet; New Caledonia has no mobility score data yet — not enough data to call a winner.

French Polynesia has no culture score data yet; New Caledonia has no culture score data yet — not enough data to call a winner.

not scored

Between the two, French Polynesia is better connected — 1.2M passengers/yr vs 539K passengers/yr. French Polynesia is quieter than 85 of 87 countries worldwide; New Caledonia is quieter than 86 of 87 countries worldwide. French Polynesia sees ~4 air passengers per resident a year; New Caledonia sees ~2 air passengers per resident a year — a derived figure, not itself ranked.

French Polynesia runs 18°C to 32°C for most people; New Caledonia runs 12°C to 33°C for most people. Depends on you — which range fits your tolerance is the real question here, not a score.