[5] From 1943 to 1944, Trinity Beach was the site of intensive training in amphibious warfare for Australian and American troops in the context of World War II.

[7] As part of Mulgrave Shire, Trinity Beach experienced suburban development beginning in the 1970s,[8] leading to a population of over 2000 by the mid-1980s.

[16] In 2023, Trinity Beach was affected by Cyclone Jasper and the resulting 2023 Cairns floods.

This flooding led to an evacuation warning for the Bluewater Estate[20][21] and major road closures,[22][23] which resulted in isolation from the rest of Cairns.

[24] Videos on social media soon emerged showing inundated residential neighbourhoods in the suburb.

[25] Ahead of the 2024 Queensland state election, preservation of Taylor Point, a scenic, undeveloped part of the Trinity Beach waterfront, became a point of contention as local election candidates pushed for public acquisition.