au Flag

Sydney Weather in September, Australia

Sydney Averages September


  • What is Average Temperature?
    The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month


  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    High Temperature

  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    Low Temperature

  • What is Average Day Temperature?
    The average temperature recorded between sunrise and sunset

    Day Temperature

  • What is Average Night Temperature?
    The average temperature recorded between sunset and sunrise

    Night Temperature

  • What is Average Sea Temperature?
    Average daily sea temperatures and divided by the number of days in the month. Sea Temperatures are taken from buoys, ships and even satellites can calculate sea temperature based on energy that is radiated from the sea's surface

    Sea Temperature

  • What are Average Daily Sunshine Hours?
    Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

    Sunshine Hours

    9 hours
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall Days

    11 days
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years


    65 mm

Slide and Tap Other Months

Sydney Daily Averages September


September 2024
1 Avg 14º 57º
2 Avg 15º 59º
3 Avg 15º 59º
4 Avg 16º 61º
5 Avg 18º 64º
6 Avg 17º 63º
7 Avg 18º 64º
8 Avg 17º 63º
9 Avg 17º 63º
10 Avg 18º 64º
11 Avg 16º 61º
12 Avg 18º 64º
13 Avg 18º 64º
14 Avg 17º 63º
15 Avg 18º 64º
16 Avg 17º 63º
17 Avg 16º 61º
18 Avg 16º 61º
19 Avg 17º 63º
20 Avg 16º 61º
21 Avg 16º 61º
22 Avg 17º 63º
23 Avg 18º 64º
24 Avg 20º 68º
25 Avg 19º 66º
26 Avg 17º 63º
27 Avg 18º 64º
28 Avg 20º 68º
29 Avg 18º 64º
30 Avg 18º 64º
Avg Historical Daily Average

September Weather Averages

Sorted by popularity:

What's the Weather Like in Sydney in September?

Sydney is one of Australia's largest cities and the capital of New South Wales. The climate in Sydney is subtropical with mild, sunny weather all year-round. September is the beginning of spring in Sydney, which means increasing temperatures and sunshine.


The average daytime temperatures in Sydney in September are around 16°C while high temperatures can hit peaks of 20°C on warmer days. Although the weather is warming in September, Sydney can experience some chilly westerly winds this month.

While the city is generally sheltered from these winds, it gets very chilly near the waters when they blow. Temperatures do drop on an evening too, so make sure to pack a jacket if you're visiting Sydney in September. The average minimum temperatures generally tend to hover around 12°C.


As with most of the months, September is generally a sunny month in Sydney. Travellers can usually expect an average of 9 hours sunshine per day with a 33% chance of a sunny day.


Spring in the city does mean more rain than at other times of the year, but it usually clears up quickly. The average rainfall expected throughout the month is 65mm which is usually spread over 11 wet days, for a 32% chance of a rainy day.

September 2019: a month's rain in one day

In 2019 on 18 September, Observatory Hill recorded 65mm strong> a month's rain in a single day, followed 19.2mm the day before.

Sea Temperature

For those who want to go in the sea whilst in Sydney, whether to swim or to ride the waves on Bondi Beach, the average temperature of the sea in August is not as high as at other times of the year, but is still very pleasant at 18°C. This is comfortable for most people to swim in.

Hotels for Sydney in September

Travellers needn't worry about not being able to find a place to stay in Sydney, as the city offers a wealth of accommodation options that will please all tastes, budgets and requirements.

Cambridge Hotel Sydney

The Cambridge Hotel Sydney is located in the prestigious Surrey Hills area, and is a good option for guests who want to stay in a quieter neighbourhood, albeit within close distance of the city's sights. Central station is just a 15 minute walk away and there's an array of great shops and restaurants in the neighbourhood. The Cambridge Hotel has been awarded 4 stars for its luxurious yet affordable accommodation, which includes stylish rooms, a swimming pool and an on-site breakfast buffet restaurant.

The Mercantile

For accommodation slightly closer to Sydney's major attractions, The Mercantile is a great budget-friendly choice for all travellers. This Irish hotel and pub has been welcoming guests since 1914 and offers comfortable accommodation in the heritage Rocks area of the city. The harbour-front ferry terminal of Circular Quay is just a 10 minute walk away, while the Opera House and Harbour Bridge are also close at hand. Rooms at The Mercantille are relaxed with traditional furnishings, and there's a free Irish breakfast every morning.


Style-conscious travellers with a bit of cash to spare should head to the luxurious Medusa in Darlinghurst. Featuring contemporary design and furnishings in a restored mansion, it's hard not to fall in love with this hotel, which has earned its reputation as one of the city's finest boutique accommodations. All of the hotel's rooms and suites come with their own kitchenettes, while there's also a courtyard pool area to lounge by if you're looking for some respite from the city's hustle and bustle. 

Beaches for September for Sydney

Sydney is well known for its laidback beach lifestyle and it's something that every traveller should experience when they're visiting the city. There are many beautiful beaches around the city, from the world-famous Bondi Beach to smaller, more secluded spots.


If you're looking for an ocean-facing beach that's less likely to be crowded than Bondi or Manly, head to Maroubra, on the southern edge of the city's coastline. Affectionately known as the 'Bra', its name derives from the Aboriginal word for "thunder", and is a favourite among surfers thanks to its strong waves. If you don't feel like braving the open seas, there's an ocean pool to swim in, along with an outdoor gym for exercising. The beach also provides plenty in the way of cafes and dining, and is home to a nicely-restored pub. 

Camp Cove

For calmer waters, head to Camp Cove which is nestled within the confines of the harbour. While secluded, the beach can easily be reached by ferry from the nearby wharf at Watson's Point. A great options for families, the beach offers swimming and snorkelling, not to mention views of the harbour and city skyline which are nigh-on unbeatable. 

Restaurants and Bars for Sydney in September

Sydney's eating and drinking scene is world-class, and offers dining and bars that you would expect of any major world capital and cultural centre.

Quay Restaurant

One of the most favoured restaurants in the city is Quay Restaurant at Circular Quay where diners can experience innovative and modern Australia dining from renowned chef, Peter Gilmore. Divine dishes are served in a dining room that overlooks the Opera House, making this a great venue for a special occasion or a celebration in Sydney.

Marrickville Pork Roll

For something a bit more low-key, Marrickville Pork Roll is worth visiting. Located in the surburbs of the city, this casual Vietnamese restaurant serves some of the best pork rolls and bánh mì in Sydney, and make an affordable and delicious option for lunch.

The Gretz

Head to The Gretz in Enmore for fabulous cocktails and fine wines. Located just outside the city centre, this up-and-coming bar features inviting decor, an impressive selection of drinks and bar snacks, not to mention friendly and attentive staff. 

Things to Do in Sydney in September

The Rocks Discovery Museum

Perched on the water's edge near the Harbour Bridge and Opera House, the charming Rocks neighbourhood forms the historic backbone of the city and is a must-visit for anyone travelling to the city for the first time. Set in a 1850s sandstone warehouse, The Rocks Discovery Museum makes a great place to retreat to if you're beset with an overcast or rainy afternoon, and brings the story of the neighbourhood to life through a series of interactive displays and hands-on learning.

Harbour Front And Botanical Gardens

Situated in the heart of the city is The Domain, a large public space that's regularly used for open-air concerts and events. Within easy walking distance of many of the city's museums, the harbour front and Botanical Gardens, this is a great place to stop by for a picnic or to laze about in the afternoons.

Barrenjoey Head

If you're looking to get away from the town for an afternoon, head to the breathtaking Barrenjoey Head, which lies to the north of the city and forms part of the tranquil Ku-Ring-Gai Chase Park. Overlooking Palm Beach, this striking headland is home to a famous lighthouse and is a brilliant place for hikes; whale-watching is also a popular pastime in the area, too. 

Dates for the Diary

Festival of the Winds

The Festival of the Winds is held in Sydney in the month of September. Taking place at Bondi Beach, this kite flying festival features large cartoon characters, animals and box kites, all of which form an amazing display.

Sydney Holiday Reviews

Slide and Tap for more Sydney Weather Averages

Holiday Weather Blog