Pasadena Weather in September

September in Pasadena brings very high temperatures, with daytime highs of 32°C (90°F) and nights around 18°C (64°F). Only 8.3 mm (0.3 in) of rainfall is typical, making it a largely dry month.

Rainfall in Pasadena in September

Typically, about a single day will experience rainfall, with an average of 8.3 mm (0.3 in) for the month. On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in Pasadena in September

Pasadena in September is worth a visit. The temperature is excellent, with 32°C (90°F) during the day and 18°C (64°F) at night. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights cool down to 18°C (64°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Pasadena in September

Enjoy a sunny month with about 278 hours of sunshine, the clear skies make Pasadena even more beautiful.

For Pasadena itself, January, February, March, April, May, June, October, November and December generally stand out with 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.