September weather forecast and climate
Byron Bay, Australia

Average temperature in September - Byron Bay, Australia
  • Average high temperature in September: 23°C

The warmest month (with the highest average high temperature) is January (28°C).
Months with the lowest average high temperature are June and July (20°C).

  • Average low temperature in September: 12°C

Months with the highest average low temperature are January and February (20°C).
The coldest month (with the lowest average low temperature) is July (9°C).

Average rainfall in September - Byron Bay, Australia
  • Average rainfall in September: 62mm

The wettest month (with the highest rainfall) is March (239mm).
The driest month (with the lowest rainfall) is September (62mm).

Average rainfall days in September - Byron Bay, Australia
  • Average rainfall days in September: 8 days

Months with the highest number of rainy days are February and March (14 days).
The month with the lowest number of rainy days is September (8 days).

Average sea temperature in September - Byron Bay, Australia
  • Average sea temperature in September: 21.9°C

The best month for swimming (with the highest average sea temperature) is February (27.2°C).
The coldest month (with the lowest average sea temperature) is August (21.5°C).

Average daylight in September / Average sunshine in September - Byron Bay, Australia
  • Average daylight in September: 11.9h

The month with the longest days is December (Average daylight: 13.9h).
The month with shortest days is June (Average daylight: 10.3h).

  • Average sunshine in September: 9h

The month with most sunshine is September (Average sunshine: 9h).
The month with least sunshine is May (Average sunshine: 6h).

Average UV index in September - Byron Bay, Australia
  • Average UV index in September: 7

Months with the highest UV index are January, February and December (UV index 12).
The month with the lowest UV index is June (UV index 3).

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