San Rafael Weather in September

September in San Rafael brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 6°C (43°F). The excellent weather makes it a solid choice for a visit.

Rainfall in San Rafael in September

You can expect rain on roughly 4 days based on historical data, averaging 32 mm (1.3 in) for the month. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.

Temperature in San Rafael in September

September is a excellent month in San Rafael, with 20°C (68°F) during the day and 6°C (43°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in San Rafael in September

There are approximately 199 hours of sunshine this month, resulting in mostly clear days.

Wind Speed in San Rafael in September

September has wind speeds averaging 1 m/s (2 knots). You can expect very gentle conditions with light air movement on typical days. Since this is an average, daily weather varies from perfectly still moments to some breezier days.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit San Rafael.