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 excellent 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 excellent 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.