Byron Bay

New South Wales Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in New South Wales, Australia in September.

🔎
Sydney Byron Bay Jindabyne The Entrance

Planning a trip to New South Wales, Australia this September? Here's what you need to know about the weather:

What to Expect in New South Wales in September

New South Wales, Australia is a region in Australia. The weather in New South Wales in September can be quite varied, with temperatures that range from mild to warm and precipitation levels ranging from low to high.

Temperatures

The average highest temperatures fluctuate between mild in Thredbo at 13°C (55°F) to warm in Casino at 26°C (79°F). Nighttime temperatures generally drop to 11°C (52°F) in Casino and 1°C (34°F) in Thredbo.

To explore the conditions in New South Wales, Australia in more detail, check the map below.

Precipitation

In September, precipitation varies across different areas. From low rainfall in Bourke with an average of 22 mm (0.9 in) to high rainfall in Tumut with 106 mm (4.2 in). Going by our weather data, this month in Sydney usually has the least rain, making it the driest month of the year.

Average sunshine

Many locations offer abundant sunshine during this month. For instance, Sydney enjoys approximately 234 hours of sunlight, ideal for those seeking sunny weather.

Explore New South Wales by month

Pick a month to see the average temperature, rainfall and sunshine in New South Wales - and find the best time to visit. (based on Sydney)

January26°C (79°F) February26°C (79°F) March25°C (77°F) April23°C (73°F) May20°C (68°F) June18°C (64°F) This monthJuly18°C (64°F) August18°C (64°F) September20°C (68°F) October22°C (72°F) November23°C (73°F) December24°C (75°F)
Best Time to Visit New South Wales →

Best Places to Visit in New South Wales in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across New South Wales.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in New South Wales

What is the weather like in September for some of the most popular destinations in New South Wales, Australia?

Temperature range in New South Wales (September)

Precipitation variation in New South Wales (September)

Sydney

In September Sydney generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
18°C (64°F)
20°C (68°F)
22°C (72°F)
Min temperature
11°C (52°F)
13°C (55°F)
15°C (59°F)
Monthly sun hours
242 hours
234 hours
248 hours
Monthly rainfall
54 mm (2.1 in)
53 mm (2.1 in)
63 mm (2.5 in)
Monthly rainy days
10 days
10 days
11 days
Weather conditions
very good
excellent
excellent
Climate in Sydney →

Byron Bay

In September Byron Bay generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 15°C (59°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
21°C (70°F)
23°C (73°F)
24°C (75°F)
Min temperature
13°C (55°F)
15°C (59°F)
18°C (64°F)
Monthly sun hours
240 hours
240 hours
260 hours
Monthly rainfall
64 mm (2.5 in)
51 mm (2 in)
87 mm (3.4 in)
Monthly rainy days
9 days
8 days
11 days
Weather conditions
excellent
excellent
excellent
Climate in Byron Bay →

Jindabyne

In September Jindabyne generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 2°C (36°F) and moderate monthly rainfall. So on average the conditions are good that month.

« August
September
October »
August
September
October
Max temperature
10°C (50°F)
14°C (57°F)
17°C (63°F)
Min temperature
0°C (32°F)
2°C (36°F)
4°C (39°F)
Monthly rainfall
70 mm (2.8 in)
76 mm (3 in)
82 mm (3.2 in)
Monthly rainy days
13 days
14 days
15 days
Weather conditions
less favorable
good
good
Climate in Jindabyne →

The Entrance

In September The Entrance generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
19°C (66°F)
21°C (70°F)
22°C (72°F)
Min temperature
11°C (52°F)
13°C (55°F)
15°C (59°F)
Monthly rainfall
58 mm (2.3 in)
60 mm (2.4 in)
71 mm (2.8 in)
Monthly rainy days
10 days
10 days
11 days
Weather conditions
very good
excellent
excellent
Climate in The Entrance →

Merimbula

In September Merimbula generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 10°C (50°F) and moderate monthly rainfall. So on average the conditions are very good that month.

« August
September
October »
August
September
October
Max temperature
16°C (61°F)
18°C (64°F)
20°C (68°F)
Min temperature
8°C (46°F)
10°C (50°F)
11°C (52°F)
Monthly rainfall
45 mm (1.8 in)
56 mm (2.2 in)
71 mm (2.8 in)
Monthly rainy days
11 days
11 days
14 days
Weather conditions
good
very good
excellent
Climate in Merimbula →

Is your destination not in the list? Have a look at all destinations in New South Wales, in Australia.

Popular cities in September

Day & night temperatures, rainfall and average weather in New South Wales in September.

City Weather Day temp Night temp Rainfall
Sydney 20°C (68°F) 13°C (55°F) 53 mm (2.1 in)
Byron Bay 23°C (73°F) 15°C (59°F) 51 mm (2 in)
Jindabyne 14°C (57°F) 2°C (36°F) 76 mm (3 in)
The Entrance 21°C (70°F) 13°C (55°F) 60 mm (2.4 in)
Merimbula 18°C (64°F) 10°C (50°F) 56 mm (2.2 in)
Coffs Harbour 22°C (72°F) 13°C (55°F) 49 mm (1.9 in)

New South Wales weather in September: frequently asked questions

What is the weather like in New South Wales, Australia in September?

Expect excellent weather across New South Wales, Australia in September. The popular destination of Sydney averages 20°C (68°F) by day and 13°C (55°F) at night during this month.

What is the average temperature in New South Wales, Australia in September?

Sydney averages a daytime maximum of 20°C (68°F) in September, with overnight lows close to 13°C (55°F).

Does New South Wales, Australia get a lot of rain in September?

September is on the drier side in New South Wales, Australia. Sydney averages only about 53 mm (2.1 in), with most days staying dry.

Is September a Good Time to Visit New South Wales, Australia?

We believe that September is one of the best times to visit New South Wales, Australia with overall excellent weather in Sydney. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, January, March, April, May, September, October, November and December provide excellent weather in Sydney.

Interested in more climate information?

We have much more information about the climate in New South Wales.

Weather and climate has detailed information for every country in the world. Are you going to Australia? Get detailed historical weather averages for many cities in Australia.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

An alternative way to discover Sydney

We have made an overview of the sights in Sydney that you must see if you want to visit Sydney in an alternative way.
The most relaxed and alternative area of Australia is called the Byron Shire

The Byron Shire is one of the most pretty areas in the world. Not only in terms on natural beauty, also the relaxed vibe and people make this an area that remains close to your heart.
Sail the Whitsunday islands

The best travel period to sail the Whitsunday islands is “winter” between June and October, with pleasant temperatures around 23 degrees Celsius (74 Fahrenheit).

The best dive spots in Australia

Explore Australia's best dive spots: from the Great Barrier Reef to HMAS Perth. Discover vibrant corals, marine life, and historic wrecks.
Must visit in Australia →