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Darwin in September sees very high temperatures, with highs around 34°C (93°F) and overnight lows of 23°C (73°F). With just 15 mm (0.6 in) of rainfall on average, rain is rarely an issue.
September in Darwin has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Pick a month to see the average temperature, rainfall and sunshine in Darwin - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Darwin typically stay consistent throughout September, with daily highs averaging around 34°C (93°F). Nights are warm, with lows typically ranging from 22°C (72°F) to 24°C (75°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Darwin spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Darwin from 1976 through 2025.
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in September →
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).
Hot weather in September means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. With minimal rainfall expected, you can leave the rain gear at home. The water temperature sits at about 26°C (79°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Darwin climate overview or explore weather in Australia.
Where to go in September - average daytime high across popular destinations.
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