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Byron Bay weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Byron Bay?
For a warm holiday, the best week has been 11–17 April (Weather Index 95). Favourable start dates for a 7-day trip run from 6 April to 16 April. January, February and December are warmest (28°C), July and September are driest and January, November and December have the most sun.
- Warmest
- January, February and December 28°C
- Coolest
- June and July 20°C
- Driest
- July and September 22% rain-day chance
- Wettest
- March 59% rain-day chance
- Sunniest
- January, November and December 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 Byron Bay
Byron Bay 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 | 28.2 | 21.5 | 45.2 | 14.0 | 114.2 | 11.9 |
| February | 27.9 | 21.5 | 51.1 | 14.3 | 163.8 | 10.8 |
| March | 26.7 | 20.8 | 59.4 | 18.4 | 228.3 | 9.8 |
| April | 24.5 | 17.6 | 43.0 | 12.9 | 88.5 | 10.3 |
| May | 22.1 | 14.7 | 38.4 | 11.9 | 84.4 | 9.2 |
| June | 19.9 | 12.0 | 27.0 | 8.1 | 72.7 | 9.1 |
| July | 19.8 | 11.3 | 21.6 | 6.7 | 53.6 | 8.9 |
| August | 21.0 | 11.8 | 23.5 | 7.3 | 56.2 | 9.9 |
| September | 22.7 | 13.9 | 22.3 | 6.7 | 57.5 | 10.7 |
| October | 24.4 | 16.7 | 37.1 | 11.5 | 109.4 | 11.0 |
| November | 25.9 | 18.5 | 35.0 | 10.5 | 91.8 | 11.5 |
| December | 27.6 | 20.5 | 39.4 | 12.2 | 100.1 | 11.9 |
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.