Jamberoo sits at the western end of Terragong Swamp, known locally as The Swamp. The
Minnamurra River flows from Minnamurra Falls along the northern side of the swamp. Just east of the old butter factory on Factory Lane the river enters a man-made channel that keeps the river flowing on the northern side of the swamp; the original channel meandered through the broad eastern end of the swamp before crossing Swamp Road and running along the south side of the swamp. In times of high tide and high rainfall, the river resumes its old course closing Swamp Road. The valley of Jamberoo and the Minnamurra River is steep-sided and reasonably narrow. As a result, the town and valley is not subject to the extremes of weather that nearby
Albion Park is. This is a significant observation because the climate data for the district is recorded at Albion Park. Local research (unverified) from Jamberoo weather stations suggests that wind speeds in Jamberoo are approximately half that experienced at Albion Park, while rainfall varies significantly depending on the altitude and proximity to the steep valley sides. Air temperature is not as extreme as recorded for Albion Park. ==Governance==