Climate Overview
The climate in Byron Bay is warm and mild. The average annual temperature is 20°C and approximately 1166mm 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 August, July, June, when temperatures can drop to 13°C.
Temperature
Byron Bay sees moderate temperature variation throughout the year, ranging from 13°C to 27°C. The warmest month is January, when average highs reach 27°C and the mean temperature sits around 25°C. August is the coolest month, with minimum temperatures around 13°C and an average of 16°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.
Precipitation
Byron Bay is a moderately rainy area, receiving approximately 1166mm of precipitation annually, which averages out to around 97mm per month. The wettest month is February, averaging 189mm of rainfall. March and June also tend to see above-average precipitation. The driest month is September, with just 49mm. That's 139mm 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.
Wind
Byron Bay is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
89 days until Spring
It is currently winter in Byron Bay, which began on June 21, 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 August near 13°C. Spring is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from 15 to 25°C. Precipitation is moderate at around 217mm for the season, averaging 72mm per month. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 27°C. Rainfall is heavy, totalling around 385mm across the season with a monthly average of 128mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 16 to 26°C. Rainfall is heavy, totalling around 305mm across the season with a monthly average of 102mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 13 to 20°C. Precipitation is moderate at around 259mm for the season, averaging 86mm per month. Winds are generally light, averaging 4km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Byron Bay is during January, April, May, July, August, September and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 62mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
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.
