Box Jellyfish in Queensland: Seasonal Safety Guide

Regional safety guide · Last reviewed 22 August 2026

Tropical Queensland has both major box jellyfish and smaller species capable of causing Irukandji syndrome. Marine stingers can be present all year, with higher risk generally during the November-to-May marine-stinger season. A season is a warning window, not a promise of safety outside it.

Where extra caution is needed

Queensland guidance emphasizes tropical waters, generally north of Bundaberg, while noting possible change in range. Estuaries, creek mouths and calm near-shore water can be habitat for dangerous species. Crocodile risk is a separate reason to use only designated swimming areas in the far north.

Before entering

Use a patrolled beach and swim between red-and-yellow flags.
Obey closures and marine-stinger signs.
Use a maintained stinger enclosure where provided; it is not 100% stinger-proof.
Wear a full-body lycra suit or other recommended coverage.
Ask the lifeguard about that day’s conditions.

Irukandji symptoms may be delayed

Severe back or abdominal pain, sweating, vomiting, agitation or cardiovascular symptoms can develop after an initially modest sting. Seek urgent medical care rather than waiting for a dramatic skin mark.

Official links

Independent clinical review is pending. Check live local alerts before entering the water.

Review and corrections

See an error or outdated source? Read our corrections process. Safety information is educational and does not replace local emergency services or clinical advice.