Just came across this under-reported gem from Geoscience Australia, I note their disclaimer – “…the length of the time series is too short for reliable vertical station velocity estimation….”
As the years roll on these data should become more reliable guides as to the changes in tide gauge heights. But what they show so far is worth reporting.
Cook Islands – steady

Fiji – steady

Kiribati – down

Manus Islands (PNG) – down

Micronesia – down

Nauru – down

Samoa – steady

Tonga – up

Tuvalu – steady

Vanuatu – down

Marshall Islands – data too short