Santa Barbara weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: May – October
What is the weather like in Santa Barbara in August?
In August, Santa Barbara is hot: daytime highs average 28 °C, and nights cool down to about 19 °C. The sea averages 18.3 °C – bracing, so a wetsuit helps for longer swims. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 9 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Santa Barbara.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 78 | 80 | 81 |
| Day | 28° | 28° | 27° |
| Night | 19° | 19° | 17° |
| Sea | 18° | 18° | 19° |
| Sun | 12 h | 12 h | 10 h |
| Rain days | 0 | 0 | 1 |
More details for August
- Daylight
- 13 h 29 min06:19 – 19:48
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 13 %on averageAll months
- Hot days
- 9 days30 °C or moreAll months
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %19 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Santa Barbara in August: quick answers
Is Santa Barbara hot in August?
Yes. In August, Santa Barbara is hot: daytime highs average 28 °C and nights stay around 19 °C. On about 9 days the thermometer climbs to 30 °C or more.
Can you swim in Santa Barbara in August?
Only if you don't mind cold water: in August the sea averages just 18.3 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Santa Barbara in August?
It hardly ever rains.
Santa Barbara month by month
The whole year in Santa BarbaraAll destinations: USAWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences