Climate Insights for Byron Bay

The climate in Byron Bay is warm and mild. The average annual temperature is 19°C and approximately 1346mm of precipitation falls per year. Byron Bay receives a notable amount of rainfall throughout the year, including during its driest month. Byron Bay is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: January, February, December. The coldest months are July, August, June, when temperatures can drop to 11°C.

Byron Bay sees moderate temperature variation throughout the year, ranging from 11°C to 27°C. The warmest month is January, when average highs reach 27°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 11°C and an average of 15°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.

Byron Bay is a fairly wet location, receiving approximately 1346mm of precipitation annually, which averages out to around 112mm per month. The wettest month is February, averaging 211mm of rainfall. March and January also tend to see above-average precipitation. The driest month is August, with just 54mm. That's 156mm less than February, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Byron Bay is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 15km/h in winter, 18km/h in spring, 18km/h in summer, 16km/h in autumn.

It is currently autumn in Byron Bay, which began on March 20, 2026. Byron Bay is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in January at around 27°C, while the coldest stretch bottoms out in July near 11°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Byron Bay is during April, May, June, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 76mm per month. By contrast, January can be uncomfortably hot with highs reaching 27°C, while July is the coldest period with lows dropping to 11°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Byron Bay based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.