Pasadena
August
Weather in Pasadena for August 2025
Your guide to Pasadena weather in August - trends and predictions
In general, the average temperature in Pasadena at the beginning of August is 31 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 28.9 °F by the end of August.
Expect significant rainfall in Pasadena during August, with an average of 16 rainy days.
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15
Dry days
16
Rainy days
0
Snow days
29°/21°
Temperatures
19 km/h
Avg max wind
68 %
Avg humidity
Pasadena in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  33° | 2  31° | 3  33° | ||||
| 4  30° | 5 33° | 6 32° | 7 25° | 8 26° | 9 26° | 10 29° |
| 11 27° | 12 27° | 13 27° | 14  28° | 15 30° | 16  27° | 17 27° |
| 18 27° | 19 27° | 20 24° | 21 28° | 22  27° | 23 26° | 24 27° |
| 25 30° | 26  31° | 27 30° | 28 30° | 29 26° | 30 29° | 31 26° |
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Temperatures trend during August in Pasadena
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Patchy light drizzle | 33° /25° | 2 mm | 7 | |
| Aug. 2 | Partly cloudy | 31° /24° | 2.6 mm | 8 | |
| Aug. 3 | Patchy rain possible | 33° /23° | 1.5 mm | 7 | |
| Aug. 4 | Moderate or heavy rain shower | 30° /21° | 9.9 mm | 7 | |
| Aug. 5 | Partly cloudy | 33° /23° | 0 mm | 8 | |
| Aug. 6 | Moderate rain at times | 32° /22° | 12.6 mm | 7 | |
| Aug. 7 | Light rain shower | 25° /21° | 16.3 mm | 6 | |
| Aug. 8 | Light rain shower | 26° /23° | 12.8 mm | 6 | |
| Aug. 9 | Light rain shower | 26° /23° | 13 mm | 6 | |
| Aug. 10 | Partly cloudy | 29° /21° | 0.1 mm | 7 | |
| Aug. 11 | Partly cloudy | 27° /20° | 0 mm | 7 | |
| Aug. 12 | Partly cloudy | 27° /20° | 0 mm | 7 | |
| Aug. 13 | Patchy rain possible | 27° /20° | 0.2 mm | 6 | |
| Aug. 14 | Sunny | 28° /19° | 0 mm | 7 | |
| Aug. 15 | Sunny | 30° /20° | 0 mm | 8 | |
| Aug. 16 | Overcast | 27° /21° | 0.1 mm | 6 | |
| Aug. 17 | Light rain shower | 27° /22° | 6.1 mm | 6 | |
| Aug. 18 | Light rain shower | 27° /22° | 16 mm | 6 | |
| Aug. 19 | Light rain shower | 27° /18° | 3.8 mm | 6 | |
| Aug. 20 | Partly cloudy | 24° /16° | 0 mm | 6 | |
| Aug. 21 | Overcast | 28° /17° | 0 mm | 7 | |
| Aug. 22 | Cloudy | 27° /18° | 0 mm | 7 | |
| Aug. 23 | Overcast | 26° /17° | 0 mm | 7 | |
| Aug. 24 | Moderate or heavy rain shower | 27° /18° | 9.2 mm | 7 | |
| Aug. 25 | Light rain shower | 30° /19° | 33.5 mm | 7 | |
| Aug. 26 | Mist | 31° /21° | 0.3 mm | 8 | |
| Aug. 27 | Cloudy | 30° /22° | 0.1 mm | 7 | |
| Aug. 28 | Light rain shower | 30° /22° | 2.2 mm | 8 | |
| Aug. 29 | Overcast | 26° /20° | 7.3 mm | 6 | |
| Aug. 30 | Light rain | 29° /21° | 2.5 mm | 6 | |
| Aug. 31 | Overcast | 26° /19° | 1.1 mm | 6 | |
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Important Notice
Our weather forecast for Pasadena in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Pasadena forecast closer to your planned date for the most up-to-date weather information.
Pasadena in August - FAQ
What are the expected maximum and minimum temperatures in Pasadena during August?
During August, expect a variety of temperatures with highs around 29° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Pasadena during August?
Significant rainfall exceeding 190.7 mm is expected in Pasadena during August, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Pasadena during August?
The average wind speed in Pasadena during August is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
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