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Weather in San Diego County for August 2025

Your guide to San Diego County weather in August - trends and predictions
  • In general, the average temperature in San Diego County at the beginning of August is 26.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 25.3 °F by the end of August.

  • With an average of 4 rainy days, San Diego County experiences minimal rainfall in August, ensuring that most days remain pleasantly dry.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
27
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/18°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
71 %
Avg humidity

San Diego County in August average weather

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Temperatures trend during August in San Diego County

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 Cloudy
Cloudy
26° /20° 0 mm 6
Aug. 2 Partly cloudy
Partly cloudy
27° /19° 0 mm 7
Aug. 3 Cloudy
Cloudy
27° /20° 0 mm 7
Aug. 4 Cloudy
Cloudy
26° /19° 0 mm 7
Aug. 5 Cloudy
Cloudy
27° /20° 0 mm 7
Aug. 6 Partly cloudy
Partly cloudy
26° /19° 0 mm 7
Aug. 7 Partly cloudy
Partly cloudy
25° /19° 0 mm 6
Aug. 8 Patchy rain possible
Patchy rain possible
25° /19° 0.4 mm 6
Aug. 9 Patchy rain possible
Patchy rain possible
25° /20° 0.2 mm 6
Aug. 10 Overcast
Overcast
24° /19° 0.1 mm 6
Aug. 11 Patchy rain possible
Patchy rain possible
25° /20° 2.5 mm 6
Aug. 12 Patchy rain possible
Patchy rain possible
25° /20° 0.1 mm 6
Aug. 13 Overcast
Overcast
25° /19° 0 mm 6
Aug. 14 Overcast
Overcast
25° /19° 0 mm 6
Aug. 15 Cloudy
Cloudy
26° /20° 0 mm 7
Aug. 16 Cloudy
Cloudy
27° /20° 0 mm 7
Aug. 17 Partly cloudy
Partly cloudy
26° /20° 0 mm 7
Aug. 18 Cloudy
Cloudy
26° /19° 0 mm 7
Aug. 19 Overcast
Overcast
25° /20° 0 mm 6
Aug. 20 Moderate or heavy rain shower
Moderate or heavy rain shower
27° /21° 26.3 mm 7
Aug. 21 Patchy rain possible
Patchy rain possible
24° /19° 0.7 mm 6
Aug. 22 Overcast
Overcast
24° /18° 0 mm 6
Aug. 23 Overcast
Overcast
24° /18° 0 mm 6
Aug. 24 Overcast
Overcast
23° /18° 0 mm 6
Aug. 25 Overcast
Overcast
24° /18° 0 mm 6
Aug. 26 Cloudy
Cloudy
25° /19° 0 mm 7
Aug. 27 Cloudy
Cloudy
26° /18° 0 mm 7
Aug. 28 Cloudy
Cloudy
26° /18° 0 mm 6
Aug. 29 Cloudy
Cloudy
26° /18° 0 mm 6
Aug. 30 Cloudy
Cloudy
25° /18° 0 mm 6
Aug. 31 Cloudy
Cloudy
25° /19° 0 mm 6
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Important Notice
Our weather forecast for San Diego County 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 San Diego County forecast closer to your planned date for the most up-to-date weather information.

San Diego County in August - FAQ

What are the expected maximum and minimum temperatures in San Diego County during August?
During August, expect a variety of temperatures with highs around 26° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Diego County during August?
Moderate rainfall is anticipated in San Diego County during August, with a total of 55.2 mm spread over approximately 4 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San Diego County during August?
The average wind speed in San Diego County during August is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
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Location coordinates Where is San Diego County?

Get accurate weather forecasts for San Diego County, located at latitude 32.716 and longitude -117.165. Stay updated with localized weather information tailored for San Diego County.

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