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Cairns weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Cairns?
For a warm holiday, the best week has been 24–30 September (Weather Index 98). Several start dates remain plausible, and the best timing varies between years. February is warmest (31°C), October is driest and October and November have the most sun.
- Warmest
- February 31°C
- Coolest
- June, July and August 25°C
- Driest
- October 19% rain-day chance
- Wettest
- January 76% rain-day chance
- Sunniest
- October and November 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Cairns
Cairns historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 30.4 | 25.6 | 76.5 | 23.7 | 424.0 | 9.8 |
| February | 30.7 | 25.6 | 71.4 | 20.0 | 317.8 | 9.7 |
| March | 29.9 | 25.2 | 66.8 | 20.7 | 280.7 | 9.4 |
| April | 28.4 | 24.0 | 48.3 | 14.5 | 133.4 | 10.3 |
| May | 26.4 | 22.0 | 36.5 | 11.3 | 61.0 | 10.1 |
| June | 25.0 | 20.2 | 27.7 | 8.3 | 35.1 | 9.8 |
| July | 24.6 | 19.6 | 20.6 | 6.4 | 38.4 | 10.1 |
| August | 24.9 | 19.5 | 19.7 | 6.1 | 28.7 | 10.3 |
| September | 26.2 | 21.0 | 21.3 | 6.4 | 24.6 | 11.2 |
| October | 28.1 | 22.6 | 18.7 | 5.8 | 26.6 | 11.7 |
| November | 29.4 | 24.0 | 29.3 | 8.8 | 42.2 | 11.8 |
| December | 30.2 | 25.1 | 51.6 | 16.0 | 271.1 | 11.0 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.