Normal weather for Byron Bay in September
It's warm in September in Byron Bay with an average temperature of 23°C. Temperatures this month range from a low of 22°C to a high of 24°C. At night, you can expect temperatures between 12°C and 16°C.
In September, there is an average of 52 mm of precipitation, spread over 8 days. The wind speed is around 5 Bft, mostly coming from the South.
The water temperature at Byron Bay is 23°C this month. Comfortable for a swim.
Want nice weather? Then September is a great time to be in Byron Bay. You’ll have pleasant temperatures and not too much rain this month.
Byron Bay in September |
London | ||
|---|---|---|---|
 Average Temperature |
23°C | 20°C | |
 High Temp |
24°C | 22°C | |
| Low Temp |
22°C | 17°C | |
 Total Precipitation |
52 mm | 44 mm | |
| Rainy Days |
8 days | 8 days | |
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
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Start of September
The month of September starts in Byron Bay with warm temperatures, averaging around 23°C during the day and nights close to 14°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-September
By mid-September, the average daytime temperature rises to around 24°C, with nights close to 14°C. Not much precipitation expected during this period. It’s mostly dry with sunshine.
End of September
By the end of September, the average daytime temperature in Byron Bay will be around 24°C, with nights close to 16°C. A shower might show up, but overall the weather will be dry and sunny.
Temperature records
With 35°C, Byron Bay hit the highest temperature in the last 10 years in September 2017. The lowest daytime temperature in this month was 15°C in 2022. The extreme night temperatures ranged from a low of 5°C to a high of 21°C.
Check out the climate of Byron Bay for all months and discover the best travel time
Curious about the climate in other parts of Australia? Check out the weather and climate in places like Sydney, Gold Coast, Melbourne, or have a look at other destinations in Australia.
August
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Daily Temperature in September in Byron Bay
This chart shows the average daily temperatures, both day and night, for each day in September in Byron Bay, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Byron Bay
The chart below shows the average daily precipitation in September for Byron Bay, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 8 days of rain in Byron Bay.
Daily UV Index in September in Byron Bay
This chart shows the average daily UV index in September in Byron Bay, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Byron Bay Over the Years
This chart shows the average temperature in September in Byron Bay, measured in degrees Celsius, over the past years.
Total Precipitation in September in Byron Bay Over the Years
This chart shows the average precipitation in September in Byron Bay, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Byron Bay
Click on a specific day in September for detailed info on the typical weather on that day in Byron Bay. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Byron Bay
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Average Weather in Byron Bay by Month
Click on a month below to see detailed weather info for Byron Bay. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Byron Bay for all months at once
