Is San Diego hot in August?
Days are typically warm at 25°C, while nights average 19.5°C.
United States · 1991–2020 normal
San Diego in
August.
Typical August weather in San Diego: 25°C by day, 19.5°C at night, 0 mm of rain over 0.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high25°C
Typical low19.5°C
Rain0 mm
Wet days0.1
In the year-round weather comparison, August scores 89 out of 100 (October leads the year at 96). Daylight is calculated as 13 h 21 from latitude 32.72°. Open-water sea temperature is 21.0°C (11 km from the place centre).
August at a glance
What is San Diego like in August?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 0 mm across about 0 wet days.
How much daylight is there?
There are about 13 h 21 between sunrise and sunset at mid-month, calculated from the place latitude.
Is August a good time to visit?
August ranks 5 of 12 in our weather comparison; October ranks first.
Event window
Warm sea in August
The nearest open-water NOAA OISST 1991–2020 cell averages 21.0°C in August. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5391811
- NOAA station
- USW00023188 · SAN DIEGO INTL AP
- Station distance
- 2.6 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for San Diego is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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