Byron Bay in January
January is right in the heart of summer for Byron Bay, and the weather has a definite personality this time of year.
The average daily maximum is 27.4 degrees with overnight lows of 22.4 degrees. Comfortable during the day, with evenings that invite a light layer.
At 27.4 degrees, January runs 3.5 degrees above Byron Bay's annual average of 23.9 degrees.
Rainfall in January averages 203mm over about 23 days. That means roughly a 77% chance of rain on any given day, so definitely bring rain gear.
Solar exposure averages 21.1 MJ/m2 per day in January, with UV levels in the extreme range. Sunscreen, hat, and sunnies are all essential. You can burn in under 10 minutes.
At 5.7/10 on the Comfort Score, January is middle of the road.
Packing tip: bring a mix of short and long sleeves, a rain jacket or compact umbrella, and SPF 50+ sunscreen and a hat.
Check the data table below for the full picture, or compare Byron Bay in January with another destination.
January at a Glance
Temperature Range
Daily temperature range in January. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Comfortable casual wear suitable for warm days
- Proper rain gear for frequent showers
- Strong sun protection including a hat and SPF 50+
- Moisture-wicking fabrics to stay comfortable in humid conditions
Coming From Overseas?
How January in Byron Bay stacks up against major cities around the world.
About 19 degrees warmer and considerably wetter.
About 23 degrees warmer and considerably wetter.
About 17 degrees warmer and considerably wetter.
How January Compares
Byron Bay's monthly climate at a glance. January is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 27.4 | 22.4 | 203mm | 5.7 |
| Feb | 27.7 | 21.9 | 201mm | 6.1 |
| Mar | 26.0 | 20.9 | 162mm | 7.1 |
| Apr | 24.1 | 17.2 | 286mm | 7.6 |
| May | 21.2 | 14.8 | 140mm | 5.9 |
| Jun | 19.8 | 11.4 | 21mm | 7.1 |
| Jul | 19.2 | 11.7 | 66mm | 6.2 |
| Aug | 22.2 | 14.4 | 117mm | 7.8 |
| Sep | 23.3 | 14.4 | 160mm | 9.0 |
| Oct | 23.5 | 16.2 | 88mm | 9.6 |
| Nov | 25.7 | 20.1 | 266mm | 7.1 |
| Dec | 27.2 | 21.4 | 136mm | 7.2 |