Monthly climate guide
Exmouth weather in September
Expect hot weather in Exmouth in September: afternoons reach about 28°C (82°F), while nights drop to around 18°C (64°F). Around 1 mm of rain falls over the month (very dry), and skies are mostly sunny. Daytime highs are 2°C warmer than August and 2°C cooler than October.
What stands out in September
- Outdoor swimming weather: around 28°C, mostly dry and sunny.
- It's one of the drier stretches of the year in Exmouth.
- Rain is well below Exmouth's usual level (around 95% less).
- Skies are at their clearest this time of year.
Avg high
28°C
82°F
Avg low
18°C
64°F
Rainfall
1 mm
very dry
Humidity
60%
relative
Sky
15%
cloud · mostly sunny
Exmouth weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 34°C / 93°F | 26°C / 78°F | 37 mm | 64% | 51% |
| February | 34°C / 94°F | 26°C / 80°F | 41 mm | 64% | 41% |
| March | 34°C / 93°F | 26°C / 79°F | 42 mm | 62% | 37% |
| April | 32°C / 90°F | 24°C / 76°F | 26 mm | 58% | 40% |
| May | 28°C / 83°F | 20°C / 68°F | 34 mm | 59% | 36% |
| June | 25°C / 77°F | 17°C / 63°F | 49 mm | 64% | 43% |
| July | 24°C / 76°F | 16°C / 60°F | 16 mm | 63% | 34% |
| August | 26°C / 78°F | 16°C / 62°F | 2 mm | 61% | 21% |
| September | 28°C / 82°F | 18°C / 64°F | 1 mm | 60% | 15% |
| October | 30°C / 86°F | 20°C / 68°F | 0 mm | 59% | 20% |
| November | 31°C / 89°F | 22°C / 71°F | 4 mm | 59% | 19% |
| December | 33°C / 92°F | 24°C / 75°F | 4 mm | 59% | 31% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- Sunglasses
Is September a good time to visit Exmouth?
Compare the months in the chart above to find your ideal window.
Best time to visit Exmouth →Other Australia cities in September
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Exmouth weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/australia/exmouth/september
<a href="https://weathercompare.eu/weather/australia/exmouth/september">Exmouth weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/australia/exmouth" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Exmouth weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/australia/exmouth/september">Exmouth weather in September</a> – WeatherCompare</p>
Exmouth in September: quick answers
Is September a good time to visit Exmouth?
Yes. September is one of the best months for Exmouth, with highs around 28°C and about 1 mm of rain.
How warm is Exmouth in September?
Average highs are about 28°C (82°F) and average lows about 18°C (64°F), based on 10 years of daily data.
Does it rain a lot in Exmouth in September?
Exmouth typically gets around 1 mm of rain in September — very dry.
Figures are long-term averages for the area around Exmouth (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.