Flood Risk in Wynnum, QLD: 2026 Assessment

Wynnum, located in Queensland, has a notable flood risk profile based on available data including proximity to waterways, elevation, and historical flood events. The Bureau of Meteorology (BOM) maintains river height and flood warning data for catchments across Queensland.

Historical flood events have impacted properties along the waterfront and low-lying areas.

Wynnum faces a notable flood risk due to its low-lying coastal location and proximity to waterways. Heavy rainfall events can lead to stormwater and riverine flooding.

For a comprehensive property-specific flood assessment including address-level elevation data, flood overlay mapping, and insurance cost estimates, use the ClimateNest full analysis tool. General suburb data cannot replace a site-specific evaluation.

Wynnum sits within ClimateNest's suburb-level hazard model for flood risk. 11.5% of the suburb's land area is mapped in high-risk flood zones and 70.1% in moderate-risk zones, based on the national hazard overlay. Exposure at this scale varies street by street, which is why an address-level check matters before you buy or insure a specific property in Wynnum.

Wynnum (postcode 4178) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are tropical cyclone (15.7% of land in high-risk zones), riverine flood (11.5% of land in high-risk zones), surface flood (9.3% of land in high-risk zones). Exposure is not uniform across Wynnum — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.