Whitsundays · Month comparison

June vs September

June ranks #1 overall vs September at #2. Stinger season ends — first full month of open-water swimming since November.

Heart Reef aerial view in clear June trade-wind conditions

June

#1 of 12 months

Best match

Stinger season ends — first full month of open-water swimming since November.

  • ↑Stinger season effectively ends; open-water swimming returns
  • ↑Humpback whale migration into the Whitsunday channel starts
Whitehaven Beach in September spring calm and clear water

September

#2 of 12 months

Best match

Best all-round month — 26°C, dry, calm, whales departing, crowds easing.

  • ↑26°C, trade winds easing, sea at 24°C — best balance of weather and water
  • ↑Whale-watching at peak; humpbacks heading south through the channel
FactorJuneSeptember
Weather score
10
10
Value score
6
6
Crowd score
6
6
Events score
7
7
Atmosphere
10
10
Avg high temp24°C26°C
Monthly rain40mm25mm
Daily sunshine8.5hrs9hrs

June trade-offs

  • ↓Late June often QLD school holidays — packages climb 30%
  • ↓Nights drop to 16°C — long-sleeve evenings on deck

September trade-offs

  • ↓Stinger season officially restarts in some advisories late September
  • ↓First two weeks often QLD school holidays — moderate price spike
See all 12 months for Whitsundays →June in detail →September in detail →
Scores compare months within Whitsundays. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →