Upper Swan Weather in September

September in Upper Swan sees daytime temperatures around 20°C (68°F) and lows of 9°C (48°F) at night. The perfect weather makes it a good time to visit.

Rainfall in Upper Swan in September

Historically, September sees about 11 days of rain, with a monthly average of 56 mm (2.2 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Upper Swan in September

Weather in Upper Swan is at its perfect in September. Highs reach 20°C (68°F), while nights settle around 9°C (48°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Upper Swan in September

The month enjoys around 230 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Upper Swan in September

Wind speeds average 6 m/s (12 knots) during September. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.

Average water temperature in September

The water temperature is 17°C (63°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If your ideal day consists of dry skies and pleasant temperatures, April, May, September, October and November typically offer the best circumstances for Upper Swan.

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• January
• February
• March
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• May
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• September
• October
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• December

For a detailed overview over the year and the best time to visit Australia, check out our Upper Swan's climate page.

Upper Swan Temperature in September

Min Temperature 9°C (48°F)  

Max Temperature 20°C (68°F)  

Water Temperature 17°C (63°F) *  

Chance of Rain 35%  

Precipitation 56 mm (2.2 in)  

Rainy days 11 days  

Humidity 53% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 230 hours *  

Percentage Sunshine *  

* Data from: Perth, Australia (19 KM, 12 Miles).

What to Wear in Upper Swan in September

For Upper Swan in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. With water temperatures around 17°C (63°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Upper Swan in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

4/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Australia, check out our Upper Swan's climate page.

More climate data for Upper Swan

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Upper Swan climate overview or explore weather in Australia.