Search for cities, countries, lakes and rivers
Sea Temperature in Byron Bay in September
Complete information on the sea temperature range in the Tasman Sea in Byron Bay in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Byron Bay. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Byron Bay in September
19°C
MINIMUN
21°C
AVERAGE
23°C
MAXIMUM
Historical Data of Water Temperature in September in Byron Bay
Water Temperature Chart for Tasman Sea in Byron Bay in September
Sea Temperature Table in Byron Bay in September Over the Past Years
Day | 2024 | 2023 | 2022 | Average |
---|---|---|---|---|
Sep 1 | 23°C | 21°C | 23°C | 22.3°C |
Sep 2 | 22°C | 20°C | 22°C | 21.5°C |
Sep 3 | 22°C | 21°C | 21°C | 21.3°C |
Sep 4 | 22°C | 21°C | 23°C | 22.0°C |
Sep 5 | 21°C | 21°C | 23°C | 21.8°C |
Sep 6 | 21°C | 21°C | 21°C | 21.0°C |
Sep 7 | 21°C | 22°C | 22°C | 21.8°C |
Sep 8 | 21°C | 22°C | 21°C | 21.5°C |
Sep 9 | 21°C | 21°C | 23°C | 21.8°C |
Sep 10 | 21°C | 21°C | 21°C | 21.0°C |
Sep 11 | 22°C | 21°C | 23°C | 21.8°C |
Sep 12 | 21°C | 21°C | 22°C | 21.5°C |
Sep 13 | 21°C | 21°C | 22°C | 21.3°C |
Sep 14 | 21°C | 21°C | 22°C | 21.5°C |
Sep 15 | 22°C | 21°C | 22°C | 21.5°C |
Sep 16 | 21°C | 20°C | 21°C | 21.0°C |
Sep 17 | 21°C | 21°C | 23°C | 21.5°C |
Sep 18 | 21°C | 21°C | 22°C | 21.3°C |
Sep 19 | 22°C | 21°C | 23°C | 21.8°C |
Sep 20 | 21°C | 21°C | 23°C | 21.8°C |
Sep 21 | 22°C | 21°C | 21°C | 21.5°C |
Sep 22 | 22°C | 21°C | 21°C | 21.5°C |
Sep 23 | 22°C | 21°C | 22°C | 21.8°C |
Sep 24 | 21°C | 21°C | 23°C | 21.5°C |
Sep 25 | 22°C | 21°C | 23°C | 21.8°C |
Sep 26 | 21°C | 21°C | 22°C | 21.5°C |
Sep 27 | 22°C | 21°C | 22°C | 21.8°C |
Sep 28 | 22°C | 22°C | 21°C | 21.8°C |
Sep 29 | 21°C | 21°C | 22°C | 21.5°C |



Byron Bay Climate and Swimming Opportunities in September
22°C
Average Day Air Temperature
13°C
Average Night Air Temperature
61 mm
Precipitation Amount per Month
8 days
Number of Rainy Days
12 hrs
Daylight
per Day
8 hrs
Sunshine
per Day
15 km/h
Average Wind Speed
54%
Average
humidity
Byron Bay lies within the New South Wales in Australia. The average daytime temperature in Byron Bay in September is 22°C (71°F), while the nighttime average is 13°C (56°F). There are typically eight rainy days during the month, with a total precipitation of 61 mm (2.4 inches). The daylight duration in September in Byron Bay is 12 hours, with an average of 8 hours of sunshine per day. The average wind speed in September is 15 km/h (9 mph), and the humidity level is around 54%.
The water temperature in Byron Bay in September ranges from 21°C to 22°C (70°F to 72°F). At the beginning of the month, the average temperature is around 22°C (72°F), shifting to 21°C (70°F) by mid-September and reaching 22°C (72°F) in the last ten days. Overall, the average sea temperature in Byron Bay for September is 22°C (72°F). Optimal swimming conditions. The water is warm, and the air is comfortable for drying off and sunbathing.
Sea Temperature in September in Nearby Cities
Frequently Asked Questions About Water Temperatures in September in Byron Bay
What is the sea temperature in Byron Bay in September?
The water temperature in the Tasman Sea in Byron Bay in September ranges from 21°C to 22°C (70°F to 72°F).
Is it possible to swim in the Tasman Sea in Byron Bay in September?
The average sea temperature in Byron Bay in September is 22°C (72°F), and the air temperature is 22°C (71°F), so optimal swimming conditions. The water is warm, and the air is comfortable for drying off and sunbathing.