Boulder Weather in September
What's the weather like in Boulder (Western Australia) in September 2024?
The climate in Boulder during September can be summarized as mild and dry.
September is in the spring in Boulder and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 7°C (45°F) is normal.
| Daytime temperature | 21.8°C 71.2°F |
|---|---|
| Nightly temperature | 7.2°C 45°F |
| Average temperature | 14.5°C 58.1°F |
| Daily sunshine | 9.1 hrs |
| Avg rainfall | 16 mm 0.6 ins |
| Rainy days | 12 days |
| Sea temperature | 18.3°C 65°F |
| Humidity | 41% |
| Windspeed | 15.8kph 10 mph |
On average September is the driest month of the year in Boulder with around 16mm 0.6 inches of rain making it a dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
September temperatures in Boulder
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Boulder in September 2024.
Other monthly averages
Best places to visit in September
Boulder weather stats
| Hottest month: | January | 32.9°C 91.2°F |
|---|---|---|
| Driest month: | September | 16mm 0.6ins |
| Sunniest month: | December | 11.6hrs |
| Coldest month: | July | 15.8°C 60.4°F |
| Wettest month: | June | 37mm 1.5ins |
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