March in Cairns averages a daily high of 31.1°C with nights around 23.2°C. Expect roughly 19 wet days totalling 411.9mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Cairns is June–September.
Based on CAIRNS POST OFFICE, AS (2.1km), 1995–2024. 15 years of March data.