Riverside Weather in September

Riverside in September sees pleasant temperatures, with highs around 20°C (68°F) and overnight lows of 10°C (50°F). Rainfall is fairly high at around 104 mm (4.1 in) on average, so pack waterproofs just in case.

Rainfall in Riverside in September

The climate data from previous years indicates about 11 days of rain, averaging 104 mm (4.1 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Riverside in September

In September, expect pleasant temperatures in Riverside, with highs of 20°C (68°F) and lows of 10°C (50°F) at night. The difference between afternoon and evening temperatures is usually noticeable. With lows around 10°C (50°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Riverside in September

With about 173 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.