The stinger season in Australia is when the box jellyfish and other dangerous types of jellyfish increase their attack on marine life. The swimmers and beachgoers who visit coastal waters during this period are at risk. Depending on the locality, this period can occur from the beginning of spring to early autumn. In the area of Northern Australia that includes Northern Queensland, Northern Territory, and Western Australia, stinger season usually starts in October- November and continues until April- May. This area has the longest and most severe season due to high tropicality. In the Eastern part of Australia (Queensland and New South Wales), the season usually starts in November or December and ends in May or June. In Queensland seasonal peak typically happens in December to April.

In Southern Australia (Victoria, South Australia, and southern Western Australia), the risk is lower, but there may still be a brief stinger season, typically from December to March. The exact timing can vary yearly, and authorities often issue warnings and safety advice during this period, with some beaches implementing stinger-net enclosures for safer swimming.