Santa Barbara weather in August
August in Santa Barbara: warm, dry, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Santa Barbara · #99 of 1413 destinations to visit in August · comfort 93/100 (tier S)
- Days
- 26°C
- Nights
- 16°C
- Wet days
- 1
- Sun
- 12.3 h
- Humidity
- 62%
- Daylight
- 13 h

Traveller notes on Santa Barbara in August
Santa Barbara's forum calls August typically pleasant, around 75°F, with cooler mornings and evenings that can call for a light jacket once the sun goes down. Regulars note coastal fog is less common in August than in June or July, though it can still roll in within a mile or two of the water and usually burns off by mid-morning — the ocean itself rarely climbs above 65°F.
Other months in Santa Barbara
Regulars name this month's own local phenomenon, June Gloom, a morning marine fog that regulars say burns off by around 10:30am most days but can roll back in fast at sunset - averaging about 22 foggy days across the month, occasionally enough to disrupt flights at the local airport. Our row backs that mild, genuinely dry read, 23.3C over 14.6C nights, with rain essentially absent, 2.9mm across half a day on average, and humidity at 61 percent. Regulars are consistent there's no way to predict which days get hit, foggy one morning and clear the next, with a short drive inland to Santa Ynez reliably escaping it into sun and real heat. Mornings spent on State Street or at the mission, afternoons at the beach once the fog lifts, is the standard local rhythm. The sea sits at a cool 17C. The record: 13.4 hours of sun, a 13.8 kph wind and AQI 38.
Regulars name this and September as the region's best weather months, with the summer fog largely gone and rain not yet arrived, making it a genuinely reliable stretch rather than a compromise season. Our row backs the settled, dry read, 24.8C over 13.8C nights, with rain minimal, 11.1mm across under a day, and humidity down to 54 percent. Regulars are consistent that evenings and nights still turn genuinely chilly enough for at least a light jacket, even on a warm-feeling afternoon, and that a rain jacket is rarely needed this time of year even if an umbrella is worth packing just in case. The sea sits at a cool 18.2C. The record: 10.3 hours of sun, a 12.7 kph wind and AQI 35.
Santa Barbara-forum threads on January weather are candid that the month is genuinely a gamble - fog, rain and grey skies are all real possibilities, but so is a perfectly sunny, mild day, and posters describe the actual mix as coming down to luck more than a predictable pattern. What's consistent regardless of the specific day: it runs noticeably cooler than the region's summer reputation suggests, and the ocean itself sits cold enough that swimming isn't appealing even on a warm afternoon. Regulars recommend layering, plus a proper windproof or rain-ready jacket kept handy. Despite the weather roulette, posters are consistent that January is still worth the visit for anyone willing to take the gamble, wine country day trips and the waterfront both holding up fine under cloud as well as sun. The record: 18.2C days feeling like 16C, 8.2C nights, a notably high 108mm across 5.4 days, a 14.2C sea, 64 percent humidity and 8.1 hours of sun.
July in Santa Barbara is when June Gloom thins to a morning habit. The marine layer that grey-outs May and June usually burns off by the afternoon in July, and regulars are clear that no one can predict it - foggy one day, sunny the next, with fog on about 22 June days in an average year, enough to disrupt flights out of the airport a dozen times in a month. The escape is a drive: over the 154 to Santa Ynez, about 45 minutes, where the same day is sunny and in the 80s. Our row gives 25.2C reading as 28C, with 0.5 precipitation days and an 18.2C sea. The record: 15.8C nights, humidity 62 percent and 13.3 hours of sun.
Add your own note from Santa Barbara's card on the map.
Santa Barbara climate normals — August
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Santa Barbara in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsOld Spanish Days Fiesta, Summer break in United States, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Santa Barbara's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherSanta Barbara's weather peaks July–September, best around August.
August includes Blue and humpback season.
Best weatherFair weatherToughest weather
What's on in Santa Barbara in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Blue and humpback season
15 May – 15 Sep · usuallyWhale seasonBlues and humpbacks feed in the channel off the Channel Islands through the summer, the largest animal that has ever lived on a day trip from a small harbour.
- Festival
Old Spanish Days Fiesta
29 Jul – 10 Aug · usuallyMajor festivalCrowdedBook earlyFive days from the Wednesday before the first Saturday in August: horses down State Street, dancing at the Mission steps and confetti eggs cracked over strangers' heads. Source ↗
Nearby, and something's on
Within 300 km of Santa Barbara — a day trip or a short hop — with something on this month. Never part of the comfort score.
- Laguna Beach202 kmSawdust Art Festival24 Jun – 6 Sep · usuallyArts festivalsawdustartfestival.org
- Sequoia National Park253 kmCrystal Cave tours20 May – 10 Sep · usuallySummer season opensnps.gov
- Big Sur281 kmBlue and humpback whales offshore1 Jul – 15 Oct · usuallyWhale seasonmontereybaywhalewatch.com
Where is Santa Barbara?
Santa Barbara in August — FAQ
- Is August a good time to visit Santa Barbara?
- August in Santa Barbara: warm, dry, with clean air — one of the best months to visit. It ranks #1 of 12 months for Santa Barbara on SeasonMap's comfort score (93/100).
- What is the weather like in Santa Barbara in August?
- In August, Santa Barbara averages a daily high of 25.9°C and a low of 16.3°C, with about 2.9 mm of rain over roughly 0.5 rainy days.
- What is the air quality in Santa Barbara in August?
- Santa Barbara has a mean US Air Quality Index of about 37 in August.
Within 300 km: Laguna Beach's Sawdust Art Festival around 24 Jun – 6 Sep, and Sequoia National Park's Crystal Cave tours around 20 May – 10 Sep.