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 perfect, 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.

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• January
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• May
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• October
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For a detailed overview over the year and the best time to visit the United States of America, check out our Pasadena's climate page.

Pasadena Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 32°C (90°F)  

Chance of Rain 3%  

Precipitation 8.3 mm (0.3 in)  

Rainy days a single day  

Humidity 67% *  

Sunshine 278 hours *  

Percentage Sunshine 75% *  

* Data from: Los Angeles, the United States of America (33 KM, 20 Miles).

What to Wear in Pasadena in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Pasadena in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Pasadena's climate page.

More climate data for Pasadena

Temperature Rainfall Sunshine Humidity

See the full Pasadena climate overview or explore weather in the United States of America.