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Warrnambool Weather in September
September in Warrnambool brings moderate temperatures around 16°C (61°F) during the day, dropping to 9°C (48°F) at night, with quite a bit of rainfall expected, averaging around 93 mm (3.7 in) for the month.
Rainfall in Warrnambool in September
Looking at the last 30 years, the data shows about 10 days with rain, averaging 93 mm (3.7 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Warrnambool in September
In September, Warrnambool sees moderate temperatures, with highs of 16°C (61°F). Nights drop to around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.Should you favor a climate that's both dry and comfortably warm, January, February, March, April, November and December typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Warrnambool Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
16°C (61°F)
Chance of Rain
34%
Precipitation
93 mm (3.7 in)
Rainy days
10 days
Warrnambool Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Warrnambool - and find the best time to visit.
Daily Historical Temperatures
36-year average (1990-2025)
Based on our historical records, temperatures in Warrnambool typically stay consistent throughout September, with daily highs averaging around 16°C (61°F). Nights are cold, with lows typically ranging from 7°C (45°F) to 9°C (48°F).
Average temperatures in September
Daily Historical Precipitation
36-year average (1990-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Warrnambool in September
Browse day-by-day weather records for Warrnambool spanning 37 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Warrnambool historical weather extremes in September
Our historical data for Warrnambool spans 1990 to 2026, revealing these weather extremes.
- Warrnambool recorded its highest September temperature of 28°C (82°F) on September 30, 2023.
- Warrnambool experienced its chilliest September day on September 11, 2004, reaching only 7°C (45°F).
- The lowest overnight temperature recorded in September was 1°C (34°F) (September 17, 2019).
- The wettest September day on record brought 40 mm (1.6 in) of precipitation to Warrnambool (September 17, 1991).
Best Places in Australia in September
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
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).
What to Wear in Warrnambool in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags.
What To Do in Warrnambool in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Warrnambool 3-Day Forecast
More climate data for Warrnambool
See the full Warrnambool climate overview or explore weather in Australia.
Popular in September
Where to go in September - average daytime high across popular destinations.
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