San Diego in August
Warmest beach weather
By Daan · Last reviewed October 2026
The short answer
August is a reasonable month in San Diego — with trade-offs.
August has the best beach weather of the year, with crowds to match.
August in detail
What August actually feels like
- Weather
- 20–25°C
- Warm and sunny, with the warmest sea.
- Crowds
- High
- Busy with summer holidays.
- Prices
- $$$$
- Peak rates.
+Warm water and sunny days.
–Crowded beaches.
My tip for August
Get to La Jolla Cove early for parking.
- Beach
- Surfing
How August compares
Against the other eleven months
4th of 12 overall in San Diego, 1st for weather, 11th for space, 11th for value. The emptiest month is January; the best value is November.
See all twelve months for San DiegoPlan around
What’s on in San Diego in August
- Summer peak
- Beaches, the zoo and La Jolla Cove are at their busiest.
July–August
Not set on August?
Even stronger months in San Diego
Also good in August
Weather
Weather in San Diego in August
In August San Diego averages a high of 25°C (77°F) and a low of 20°C (68°F), with about 0 mm of rain or snow over 0 wet days. The warmest month is August (around 25°C) and the coolest is January (around 19°C); the wettest month is February.
- Average high
- 25°C
- 77°F
- Average low
- 20°C
- 68°F
- Precipitation
- 0 mm
- Wet days
- 0
Climate data: NOAA (San Diego International Airport, 1991–2020). Temperatures are averages of daily highs and lows.
Quick answers
San Diego in August: the questions people ask
- Is August a good time to visit San Diego?
- August is a reasonable month in San Diego — with trade-offs. It ranks 4 of 12 months in San Diego overall (1 for weather, 11 for space, 11 for value). The main upside: Warm water and sunny days. The main downside: Crowded beaches.
- What is the weather like in San Diego in August?
- Average highs are around 25°C and lows around 20°C. Expect about 0 mm of rain or snow over roughly 0 wet days. Warm and sunny, with the warmest sea. For comparison, the warmest month is August (around 25°C) and the coolest is January (around 19°C).
- Is San Diego crowded in August?
- Crowds are high. Busy with summer holidays. The quietest month is January.
- How expensive is San Diego in August?
- Prices are at level 4 of 5 ($$$$). Peak rates. The best-value month is November.
- When is the best time to visit San Diego?
- In the CrowdFreeViews month scores, October is the best month overall (August ranks 4 of 12). The quietest month is January and the best value is November.