September · Australia
Best time to visit Whitsunday Islands in September Weather, crowds & prices
Weather in Whitsunday Islands in September
Average temperature 23°C, 11 mm of rain, about 27 days with 6+ hours of sunshine and 72% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.7/10
Ranked #1 of 12 months
- Avg temp
- 23°C
- Rainfall
- 11 mm
- Humidity
- 72%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Whitsunday Islands scores 9.7/10 for beach and coastal travel - the single best month of the year. Expect around 23°C, 11 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
The Whitsundays scatter white-sand isles and Hill Inlet swirls-yacht charters from Airlie Beach. Best window: the drier months outside peak monsoon.
September in Whitsunday Islands — the year's strongest window
With 23°C (73°F) on average, September delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
At just 11 mm for the month, rain will not shape your plans; you get about 27 days with 6+ hours of sunshine and 11.9 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Whitsunday Islands at 9.7/10 — the reference point every other month on this page is measured against.
Pack light clothing, swimwear and real sun protection.
Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Whitsunday Islands in September?
- In September, Whitsunday Islands averages 23°C, 11 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 9.7/10.
- Is September a good time to visit Whitsunday Islands?
- September earns a 9.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Whitsunday Islands in September?
- Expect about 11 mm of rain in September. Average humidity is 72% and there are about 27 days with 6+ hours of sunshine.
Curated in Whitsunday Islands
Tickets & experiences
Things to do in Whitsunday Islands
Whitsunday Islands, Australia. Live activities and tours from GetYourGuide, matched to this destination.