January in Byron Bay averages 28°C (82°F) during the day and 22°C (72°F) at night. Quite a bit of rainfall is typical this month, with around 148 mm (5.8 in) on average. An umbrella is a good idea.
January in Byron Bay has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
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Pick a month to see the average temperature, rainfall and sunshine in Byron Bay - and find the best time to visit.
44-year average (1976-2026)
Based on our historical records, temperatures in Byron Bay typically stay consistent throughout January, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 22°C (72°F).
44-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Byron Bay spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Byron Bay between 1991 and 2025, these are the recorded extremes during January.
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in January →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in January. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 25°C (77°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Water Temp
See the full Byron Bay climate overview or explore weather in Australia.
Where to go in January - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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