January · Australia
Best time to visit Great Barrier Reef in January Weather, crowds & prices
Weather in Great Barrier Reef in January
Average temperature 27°C, 483 mm of rain, about 24 days with 6+ hours of sunshine and 82% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
4.1/10
Ranked #12 of 12 months
- Avg temp
- 27°C
- Rainfall
- 483 mm
- Humidity
- 82%
- Days with 6h+ sun
- 24
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
January in Great Barrier Reef scores 4.1/10 for nature and wildlife travel - ranked #12 of 12. Expect around 27°C, 483 mm of rain, and roughly 24 days with 6+ hours of sunshine this month.
From June to October, dry southeasterly winds clear the reef's water to 30m visibility—prime snorkeling season.
January in Great Barrier Reef — the hardest end of the year
Days in January average 27°C (81°F) and humidity near 82% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
This is the year's wettest stretch at 483 mm, but with about 24 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 4.1/10 on the same scale — 12th of 12 months, versus 9/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella, footwear you can get muddy.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, August is materially better in Great Barrier Reef — 4.9 points higher on the same scale.
Frequently asked
- What is the weather like in Great Barrier Reef in January?
- In January, Great Barrier Reef averages 27°C, 483 mm of rain, and about 24 days with 6+ hours of sunshine. Its climate-comfort score is 4.1/10.
- Is January a good time to visit Great Barrier Reef?
- January earns a 4.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Great Barrier Reef in January?
- Expect about 483 mm of rain in January. Average humidity is 82% and there are about 24 days with 6+ hours of sunshine.
Curated in Great Barrier Reef
Tickets & experiences
Things to do in Great Barrier Reef
Great Barrier Reef, Australia. Live activities and tours from GetYourGuide, matched to this destination.