What is the weather like in Adelaide in September?

Expect temperatures between 10°C and 17°C with 21% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Adelaide in September?

Adelaide in September scores 64/100 based on 30 years of climate data. Good option with minor considerations.

Who should visit Adelaide in September?

September in Adelaide is ideal for: Families with children, Outdoor enthusiasts, Photographers, Cultural tourists, Honeymoon couples.

Adelaide Weather in September | 30-Year Forecast

Avg High

17°C

Hottest around day 30

Avg Low

10°C

Coolest around day 3

Rainy Days

1days

21% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Gulf St Vincent

14.9°C

Monthly Average

Water Feel

🥶Polar Plunge

Consider a wetsuit for extended swimming

Swim Rating

❄️Cold water hazard

Based on average sea surface temperature

Body of Water

Gulf St Vincent

Adelaide coastline

Essential Travel Info for Adelaide

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

AUD

$ Australian dollar

Language

English

Driving

Left side

Connect

There is extensive free Wi-Fi access (po...

Safety

High Safety

GPI: 1.565

Travel Intelligence

Exclusive flight analytics & health data for Adelaide

Smart Flight Estimator

Airport-to-Airport Logistics

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Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

44/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

Dec

Low

Nov

Monthly Traffic Distribution

115

Jan

105

Feb

104

Mar

116

Apr

125

May

102

Jun

130

Jul

134

Aug

133

Sep

129

Oct

Nov

145

Dec

Traffic Level

Low Season

Key Connections

Melbourne (MEL)

Sydney Kingsford Smith (SYD)

Brisbane City Brisbane (BNE)

Port Lincoln (PLO)

Perth International (PER)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Australia. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Australia.

Japanese Encephalitis

Japanese encephalitis is mainly a concern in the Murray River, and the Outer Torres Strait Islands area.Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or traveling at times outside of the Japanese encephalitis season.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Australia.If rabies exposures occur while in Australia, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Direct travel from United States: Vaccine isnotrequired.Travel from countries with risk for YF virus transmission: Vaccine isrequiredfor travelers ≥1 year old; this includes >12-hour airport transits or layovers in countries with risk for YF virus transmission.3Updated April 23, 2025See footnotes

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Adelaide?

👌Good option with minor considerations(64/100)

Short Answer

Don't expect beach weather in Adelaide's September: 14.9°C cold seas despite 17°C air temps. Coastal scenery remains beautiful, just pack warm layers.

Decision Factors

Vaccinations required

Yellow Fever

Peak tourist season

92% of annual peak - expect crowds and peak prices

Cold sea - swimming challenging

14.9°C sea temperature - Polar Plunge

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Dengue

Plenty of sunshine

9.7h of sunshine daily

Good For

👨‍👩‍👧‍👦
Families with children
Comfortable 17.4°C temperatures and low 21% rain risk
🥾
Outdoor enthusiasts
Ideal hiking conditions: 17.4°C, 21% rain chance
📸
Photographers
9.7h sunshine, 53% clear skies for golden hour shots
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 90/100 with romantic weather conditions

Who Should Avoid

🏖️
Beach lovers
Sea temperature only 14.9°C - too cold for comfortable swimming
💰
Budget travelers
Peak season means premium prices everywhere

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Adelaide in September averages 17°C with 21% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Adelaide in September

What are the temperatures in Adelaide in September?

Daytime highs average 17°C, nights drop to 10°C. Temperatures remain fairly consistent.

How many rainy days in Adelaide in September?

Expect around 1 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Adelaide in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Adelaide?

This is shoulder season—moderate prices and manageable crowds.

Adelaide Weather in September

Sea Temperature in September

Adelaide September Weather Calendar

Essential Travel Info for Adelaide

Travel Intelligence

Smart Flight Estimator

Flight Connectivity Analysis

Monthly Traffic Distribution

Key Connections

Health & Safety Advisory

COVID-19

Hepatitis B

Japanese Encephalitis

Measles

Rabies

Yellow Fever

Is September a Good Time to Visit Adelaide?

Decision Factors

Good For

Who Should Avoid

Related Guides

Frequently Asked Questions: Adelaide in September

What are the temperatures in Adelaide in September?

How many rainy days in Adelaide in September?

What to wear in Adelaide in September?

Is September peak season in Adelaide?