Byron Bay Weather in January
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.
Rainfall in Byron Bay in January
The climate data from previous years indicates about 13 days of rain, averaging 148 mm (5.8 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Byron Bay in January
Daytime temperatures in Byron Bay reach 28°C (82°F) in January, dropping to 22°C (72°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 22°C (72°F), evenings stay pleasantly warm. This month tends to be the warmest of the year. Light, comfortable clothing will serve you well.
Sunshine in Byron Bay in January
The days are predominantly sunny, with an estimated total of around 230 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Average water temperature in January
The water temperature is 25°C (77°F), which most people find very comfortable. A good month for swimming and water sports.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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Byron Bay's climate page.
Byron Bay Temperature in January
Min Temperature
22°C (72°F)
Max Temperature
28°C (82°F)
Water Temperature
25°C (77°F)
Chance of Rain
42%
Precipitation
148 mm (5.8 in)
Rainy days
13 days
Sunshine
230 hours
Percentage Sunshine
Daily Historical Temperatures
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).
Average temperatures in January
Daily Historical Precipitation
44-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Byron Bay in January
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.
Byron Bay historical weather extremes in January
Based on weather observations in Byron Bay between 1991 and 2025, these are the recorded extremes during January.
- On January 3, 1994, temperatures climbed to 36°C (97°F), marking the warmest January day on record.
- On January 12, 2020, Byron Bay saw its coldest January day with temperatures maxing out at 22°C (72°F).
- The lowest overnight temperature recorded in January was 13°C (55°F) (January 19, 2018).
Best Places in Australia in 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 →
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What to Wear in Byron Bay in January
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.What To Do in Byron Bay in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Byron Bay's climate page.
Temperature Rainfall Sunshine Water Temp
See the full Byron Bay climate overview or explore weather in Australia.
