Santa Barbara, CA Weather
Santa Barbara hourly forecast: next 24 hours
Today's high of 73°F (23°C) is about 10°F (6°C) below the typical September high of 83°F (28°C).
Current conditions in detail
Santa Barbara weather tomorrow (Thursday, September 17)
Tomorrow in Santa Barbara looks sunny, with a high of 75° and an overnight low of 56°. Rain is unlikely (5% chance). Winds top out near 8 mph, and the UV index reaches 8 (high).
Santa Barbara 14-day forecast
About the weather in Santa Barbara
9 months of the year in Santa Barbara land in the band most people call comfortable - highs between 18°C and 27°C with rain on fewer than twelve days. The exceptions sit at either end: August at 85°F (29°C) and January at 65°F (19°C).
Santa Barbara weather: quick facts
- Hottest month: August - highs near 85°F (29°C)
- Coldest month: January - highs near 65°F (19°C)
- Decade extremes (2015-2024): 114°F (46°C) high · 31°F (0°C) low
- Wettest month: January (7 rainy days) · Sunniest: July (13.8 h sun/day)
- Climate type: Mediterranean
- Annual swing: 11°C between the average warmest and coolest month · day to night: 10°C
- Average humidity: 59%
Temperatures through the year
Relative humidity averages 59% across the year, drier than about 86% of the cities we track. January bottoms out at 65°F (19°C) in daylight, 48°F (9°C) after dark. August is the warm end of the year, averaging 85°F (29°C) by day and 66°F (19°C) overnight. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 114°F (46°C) and the lowest daily minimum 31°F (0°C). Precipitation concentrates in January - 4.9 inches (125 mm) on 7 days - and thins out by July.
Rain, sun and snow
6 months average under 20 mm of rain, the longest unbroken stretch running May through October. Sunshine averages 11.0 hours a day over the year - sunnier than 95% of the 3496 cities in our dataset, peaking in July at 13.8 hours. Days and nights are about 10°C apart on average - wider than roughly 76% of the cities we track.
Season by season
Spring (March through May)
Through spring, Santa Barbara is pleasantly warm: 71°F (22°C) by day, 53°F (11°C) after dark, and rain comes on about 13 days over the three months. Daylight is generous - around 11.7 hours of sun a day.
Summer (June through August)
Summer brings hot afternoons here - highs near 82°F (28°C), nights near 64°F (18°C), and precipitation is sparse, near 10 mm (0.4 in) for the season. Daylight is generous - around 13.3 hours of sun a day.
Fall (September through November)
Fall in Santa Barbara settles into easy warmth, with daytime highs averaging 78°F (26°C) and nights around 59°F (15°C); precipitation is sparse, near 1.8 inches (45 mm) for the season. Daylight is generous - around 10.5 hours of sun a day.
Winter (December through February)
Through winter, Santa Barbara is crisp but comfortable: 66°F (19°C) by day, 48°F (9°C) after dark, and rain comes on about 18 days over the three months.
Average temperatures in Santa Barbara by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 65° | 48° | 7 | 4.9 in | 8.2 h/day | 62% |
| February | 66° | 47° | 5 | 3.8 in | 9.4 h/day | 58% |
| March | 68° | 49° | 8 | 4.0 in | 10.3 h/day | 62% |
| April | 72° | 53° | 3 | 1.0 in | 11.8 h/day | 59% |
| May | 72° | 55° | 2 | 0.5 in | 13.0 h/day | 67% |
| June | 79° | 61° | 1 | 0.2 in | 13.2 h/day | 64% |
| July | 83° | 65° | 0 | 0.0 in | 13.8 h/day | 62% |
| August | 85° | 66° | 0 | 0.1 in | 12.8 h/day | 58% |
| September | 83° | 64° | 1 | 0.2 in | 11.6 h/day | 56% |
| October | 80° | 60° | 2 | 0.5 in | 10.6 h/day | 49% |
| November | 72° | 52° | 3 | 1.1 in | 9.4 h/day | 49% |
| December | 66° | 48° | 6 | 3.4 in | 8.3 h/day | 58% |