What to expect in Great Barrier Reef in March
March is a mixed month in Great Barrier Reef. You get 31° / 23°, but manageable crowds at the big attractions. Worth it for the right traveller.
Great Barrier Reef weather in March
Typical conditions in Great Barrier Reef during March, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 31°C 88°F |
|---|---|
| Average low | 23°C 73°F |
| Rainfall | Wet 75/100 |
| Total rainfall | 389 mm15.3 in |
| Rainy days | 18 |
| Sea temperature | 28°C 83°F |
| Daylight | 12 h 11 min |
| How it feels | Hot — midday shade matters |
Rainfall figures are for Cairns.
Average highs sit around 31°C with lows near 23°C. Expect a fair amount of rain, so plan indoor backups.
Crowds & demand
Crowd levels are Low for Great Barrier Reef — plenty of space at the main sights.
Prices & value
This month counts as low season: some of the best deals of the year.
What to pack
Lightweight, breathable clothes, strong sun protection and a refillable bottle — highs near 31°C make midday heat the main constraint. Add a compact rain shell and shoes you do not mind soaking; this is one of the wetter months.
What it costs
This is one of the cheaper months to visit Great Barrier Reef. Flights and accommodation sit near their yearly floor, and you can usually book late without being punished for it. Compared with the most expensive month of the year, you are looking at roughly 43% less.
Who this month suits
- Anyone travelling on a budget
- People who would rather have space than perfect conditions
- Visitors who want to catch a festival
Events & what’s on
Look out for Marine Stinger Season while you’re there.
- Marine Stinger Season — Box jellyfish and Irukandji risk closes unprotected beaches to swimmers each wet season.
Great Barrier Reef in March compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| January | 31° / 24° | Moderate | $$ | 55 |
| February | 31° / 24° | Low | $ | 57 |
| March · This month | 31° / 23° | Low | $ | 59 |
| April | 30° / 22° | Moderate | $$ | 60 |
| May | 28° / 20° | Moderate | $$ | 59 |
These months score higher for Great Barrier Reef on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in March
If the destination is negotiable but the month is not, these places are at their best in March.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
