Pasadena Weather in September

In Pasadena, September brings very high daytime temperatures around 32°C (90°F), with nights cooling to 23°C (73°F). Expect quite a bit of rainfall this month.

Rainfall in Pasadena in September

On average, there are about 12 days with rain during this month, averaging 146 mm (5.7 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Pasadena in September

Daytime temperatures in Pasadena reach 32°C (90°F) in September, dropping to 23°C (73°F) at night. For most visitors, the main thing to prepare for is the heat during the day. Nights remain mild at 23°C (73°F), making evenings a pleasant time to be outdoors.

Sunshine in Pasadena in September

Expect a lot of sunshine this month, with about 235 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Pasadena in September

Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Should you favor a climate that's both dry and comfortably warm, March typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.