Byron Bay weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Excellent
Best time to visit: October – April
What is the weather like in Byron Bay in January?
In January, Byron Bay is warm: daytime highs average 27 °C, and even at night it stays warm at around 21 °C. The sea averages 26.0 °C – lovely and warm for swimming. With around 10 hours of sunshine a day, there is plenty of sun. It rains often – on about 14 days, adding up to 144 mm. The air is often humid and muggy. All in all, January is an excellent month for a holiday in Byron Bay.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 87 | 85 | 84 |
| Day | 26° | 27° | 26° |
| Night | 20° | 21° | 21° |
| Sea | 25° | 26° | 27° |
| Sun | 9 h | 10 h | 8 h |
| Rain days | 13 | 14 | 14 |
More details for January
- Daylight
- 13 h 47 min06:01 – 19:47
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 23 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 3 days30 °C or moreAll months
- Time zone
- UTC+11Australia/Sydney
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %26 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Byron Bay in January: quick answers
Is Byron Bay hot in January?
Warm rather than hot: in January, daytime highs in Byron Bay average 27 °C and nights cool to about 21 °C. On about 3 days the thermometer climbs to 30 °C or more.
Can you swim in Byron Bay in January?
Yes. In January the sea averages 26.0 °C – lovely and warm for swimming.
Does it rain much in Byron Bay in January?
It rains often – on about 14 days, adding up to 144 mm.
Byron Bay month by month
The whole year in Byron BayAll destinations: AustraliaWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences