San Diego weather in August
San Diego in August averages 22°C (72°F) and 0 mm of rain. It is one of the driest months of the year here.
Of the twelve months in San Diego, August is the warmest and the driest.
- Average temp
- 22°C (72°F)
20–25°C · 67–77°F
- Rainfall
- 0 mm
Not much rain
- Sunshine
- —
- Wind
- 11 km/h
What is San Diego like in August?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Rain is usually light.
Evening
Evenings stay warm.
What should I pack for San Diego in August?
Comfortable walking shoes you can rinse
Dry warm weather is walking weather, and dust gets into everything.
August compared with July and September
August in San Diego is 1°C warmer than July and about as wet as it, which averages 21°C (70°F).
August in San Diego is about the same temperature as September and about as wet as it, which averages 22°C (71°F).
Daylight in San Diego in August
On 15 August the sun is up for 13 hours 20 minutes in San Diego, rising about 06:12 and setting about 19:32 local time.
August ends 52 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 58 minutes short of June, the longest-lit month here.
Where to stay in San Diego
Dates are a starting point for August.
Travel guides for San Diego
What to read before you book.
San Diego weather by month
TemperatureRainfall
How August compares with the rest of the year
August is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 14°C / 58°F | 50 mm |
| February | 15°C / 59°F | 56 mm |
| March | 16°C / 60°F | 37 mm |
| April | 17°C / 62°F | 17 mm |
| May | 18°C / 64°F | 7 mm |
| June | 19°C / 67°F | 1 mm |
| July | 21°C / 70°F | 2 mm |
| August | 22°C / 72°F | 0 mm |
| September | 22°C / 71°F | 3 mm |
| October | 20°C / 68°F | 13 mm |
| November | 17°C / 62°F | 20 mm |
| December | 14°C / 58°F | 42 mm |
Check another month
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FAQs about San Diego in August
August climate averages for San Diego, 1991–2020.
San Diego averages 22°C (72°F) in August, ranging from about 20°C (67°F) at night to 25°C (77°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Barely. August sees only about 0 mm, so rain is unlikely to affect your plans.
They are about the same. August averages 22°C (72°F) and September 22°C (71°F), so temperature alone will not decide between them.
August is 1°C warmer than July, and about as wet.
Yes. August falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what August is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 20 minutes of daylight in mid-August, against 14 hours 18 minutes in June and 10 hours 1 minute in December.
On 15 August, sunrise is about 06:12 and sunset about 19:32 local time. Both shift across the month — the month ends 52 minutes shorter than it starts.
