April is one of the cooler months of the year in Santa Barbara, with average highs near 18.5°C and lows around 10°C (mean 14.3°C). It is one of the drier months, averaging 25 mm of rainfall and 69% relative humidity across the period.
April is one of the cooler months of the year in Santa Barbara. Across 45 years of records, the warmest April in Santa Barbara was 1989 — when the month averaged 17.1°C — while the coldest was 1983 at 11.7°C. Typical April days reach 18.5°C with nights near 10°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in Santa Barbara, averaging 25 mm of rainfall. The wettest April on record was 2006 with 120 mm, while the driest were 1997 and 2023 at 0 mm.
Relative humidity in Santa Barbara during April averages 69%. The most humid April was 2006 at 83%, and the least humid was 1985 at 58%.
April receives about 6.6 kWh/m²/day of solar energy in Santa Barbara. The sunniest Aprils were 2008 and 2022 at 7.2 kWh/m²/day, and the cloudiest was 2006 at 5.7.
Average wind speed in Santa Barbara during April is 3.4 m/s. The windiest April was 1984 at 4.7 m/s, while the calmest was 2019 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.7°C | 14.3°C | 13.5°C | 14.5°C | 14.3°C | -0.4°C |
| Avg High | 19.1°C | 18.5°C | 17.6°C | 18.7°C | 18.5°C | -0.6°C |
| Avg Low | 10.3°C | 10.0°C | 9.4°C | 10.4°C | 10.2°C | -0.1°C |
| Avg Rain | 32 mm | 16 mm | 35 mm | 19 mm | 24 mm | -8 mm |
April temperatures in Santa Barbara have stayed relatively stable across the record.
April has ranged from a record low of 3.9°C (1982) to a record high of 30.8°C (2004).
Rainfall in April is one of the drier months, averaging 25 mm, with a wettest year of 120 mm.
A good time to visit Santa Barbara
April is a good time to visit Santa Barbara, with days averaging 18.5°C and nights around 10°C (mean 14.3°C, cooler than Santa Barbara's yearly average) and low rainfall. August and July are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 18.0°C | 14.2°C | 10.3°C | 23.8°C | 7.4°C | 11 mm | 73% | 2.8 m/s | 6.3 |
| 2024 | 17.2°C | 13.6°C | 9.9°C | 22.2°C | 5.6°C | 38 mm | 79% | 3.3 m/s | 6.4 |
| 2023 | 17.2°C | 13.3°C | 9.4°C | 23.3°C | 4.4°C | 0 mm | 78% | 3.3 m/s | 6.8 |
| 2022 | 20.1°C | 15.2°C | 10.3°C | 28.3°C | 6.1°C | 8 mm | 64% | 3.9 m/s | 7.2 |
| 2021 | 19.7°C | 14.9°C | 10.1°C | 25.4°C | 7.1°C | 2 mm | 62% | 3.6 m/s | 7.1 |
| 2020 | 18.6°C | 14.8°C | 10.9°C | 26.5°C | 7.6°C | 84 mm | 74% | 3.3 m/s | 6.3 |
| 2019 | 18.0°C | 14.5°C | 11.0°C | 23.6°C | 7.9°C | 5 mm | 78% | 2.7 m/s | 6.3 |
| 2018 | 18.9°C | 14.6°C | 10.3°C | 25.4°C | 6.2°C | 5 mm | 67% | 3.3 m/s | 6.8 |
| 2017 | 18.3°C | 14.3°C | 10.4°C | 23.4°C | 6.9°C | 16 mm | 73% | 3.4 m/s | 6.8 |
| 2016 | 19.9°C | 15.8°C | 11.6°C | 26.3°C | 8.2°C | 17 mm | 67% | 3.3 m/s | 6.8 |
| 2015 | 20.0°C | 15.6°C | 11.2°C | 24.7°C | 8.1°C | 9 mm | 60% | 3.2 m/s | 6.9 |
| 2014 | 20.0°C | 15.3°C | 10.7°C | 27.1°C | 7.6°C | 10 mm | 63% | 3.2 m/s | 6.8 |
| 2013 | 20.2°C | 15.4°C | 10.7°C | 27.3°C | 6.1°C | 5 mm | 62% | 3.3 m/s | 6.8 |
| 2012 | 18.5°C | 14.1°C | 9.7°C | 26.6°C | 5.3°C | 61 mm | 68% | 3.4 m/s | 6.4 |
| 2011 | 17.0°C | 13.2°C | 9.4°C | 21.6°C | 4.9°C | 4 mm | 76% | 3.5 m/s | 6.8 |
| 2010 | 16.0°C | 12.4°C | 8.7°C | 22.6°C | 6.4°C | 61 mm | 76% | 3.5 m/s | 6.5 |
| 2009 | 18.1°C | 13.5°C | 8.9°C | 28.1°C | 5.3°C | 9 mm | 66% | 3.5 m/s | 6.8 |
| 2008 | 19.0°C | 14.0°C | 9.0°C | 27.0°C | 4.9°C | 3 mm | 62% | 3.7 m/s | 7.2 |
| 2007 | 19.3°C | 14.7°C | 10.1°C | 27.5°C | 6.4°C | 23 mm | 63% | 3.4 m/s | 6.4 |
| 2006 🌧️ | 15.2°C | 12.3°C | 9.5°C | 20.2°C | 7.3°C | 120 mm | 83% | 2.9 m/s | 5.7 |
| 2005 | 16.6°C | 12.8°C | 9.0°C | 21.0°C | 6.7°C | 23 mm | 77% | 3.4 m/s | 6.8 |
| 2004 | 20.0°C | 15.3°C | 10.7°C | 30.8°C | 7.8°C | 2 mm | 65% | 3 m/s | 6.9 |
| 2003 | 15.5°C | 12.1°C | 8.7°C | 21.5°C | 5.5°C | 47 mm | 76% | 3.4 m/s | 6.2 |
| 2002 | 18.0°C | 13.9°C | 9.7°C | 27.0°C | 6.8°C | 5 mm | 70% | 3.3 m/s | 6.5 |
| 2001 | 15.7°C | 12.0°C | 8.3°C | 24.2°C | 4.3°C | 37 mm | 75% | 3.5 m/s | 6.5 |
| 2000 | 18.5°C | 14.4°C | 10.3°C | 24.2°C | 7.5°C | 82 mm | 73% | 3.5 m/s | 6.5 |
| 1999 | 16.2°C | 12.3°C | 8.4°C | 24.2°C | 3.9°C | 53 mm | 71% | 3.7 m/s | 6.3 |
| 1998 | 15.7°C | 12.4°C | 9.1°C | 23.0°C | 6.0°C | 46 mm | 79% | 3.3 m/s | 6.6 |
| 1997 | 19.7°C | 15.1°C | 10.4°C | 23.1°C | 6.3°C | 0 mm | 64% | 4 m/s | 6.8 |
| 1996 | 20.7°C | 15.9°C | 11.1°C | 30.2°C | 7.0°C | 17 mm | 64% | 3.6 m/s | 6.9 |
| 1995 | 16.7°C | 12.9°C | 9.2°C | 21.9°C | 5.2°C | 13 mm | 78% | 3.4 m/s | 6.4 |
| 1994 | 18.7°C | 14.4°C | 10.0°C | 24.8°C | 7.3°C | 17 mm | 69% | 3.5 m/s | 6.3 |
| 1993 | 18.9°C | 14.5°C | 10.0°C | 23.8°C | 7.4°C | 1 mm | 74% | 4 m/s | 7 |
| 1992 | 20.6°C | 16.2°C | 11.8°C | 25.0°C | 8.7°C | 1 mm | 71% | 3.1 m/s | 6.7 |
| 1991 | 17.3°C | 12.9°C | 8.4°C | 23.0°C | 5.2°C | 2 mm | 75% | 3.8 m/s | 6.8 |
| 1990 | 20.7°C | 16.0°C | 11.4°C | 27.9°C | 8.9°C | 8 mm | 65% | 3.3 m/s | 6.2 |
| 1989 🔥 | 21.7°C | 17.1°C | 12.5°C | 30.2°C | 7.8°C | 5 mm | 60% | 3 m/s | 6.5 |
| 1988 | 19.1°C | 15.0°C | 10.9°C | 25.0°C | 8.1°C | 79 mm | 64% | 3.3 m/s | 5.8 |
| 1987 | 21.6°C | 16.7°C | 11.8°C | 27.5°C | 7.8°C | 5 mm | 58% | 2.9 m/s | 6.5 |
| 1986 | 17.9°C | 13.8°C | 9.6°C | 24.3°C | 7.0°C | 22 mm | 72% | 3.4 m/s | 6.2 |
| 1985 | 21.0°C | 16.2°C | 11.4°C | 28.0°C | 7.7°C | 3 mm | 58% | 3.2 m/s | 6.4 |
| 1984 | 19.2°C | 14.3°C | 9.3°C | 26.3°C | 5.3°C | 9 mm | 58% | 4.7 m/s | 6.1 |
| 1983 ❄️ | 14.9°C | 11.7°C | 8.5°C | 20.5°C | 4.7°C | 100 mm | 77% | 3.8 m/s | — |
| 1982 | 17.4°C | 13.3°C | 9.2°C | 22.3°C | 3.9°C | 52 mm | 71% | 3.3 m/s | — |
| 1981 | 19.1°C | 14.4°C | 9.7°C | 28.5°C | 6.9°C | 14 mm | 66% | 3.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 18.5°C with lows near 10°C (mean 14.3°C), based on 45 years of NASA POWER data.
April averages 25 mm of rainfall in Santa Barbara, one of the drier months. The wettest on record was 120 mm in 2006.
The hottest April reached 30.8°C in 2004. The coldest dipped to 3.9°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.2°C. Daytime highs moved from 18.3°C to 18.4°C and overnight lows from 9.6°C to 10°C over the same span.
April is one of the cooler months of the year in Santa Barbara and one of the drier months, so plan for around 18.5°C daytime highs and 10°C at night.
Not quite — April is the 5th coolest month in Santa Barbara, averaging 14.3°C.
For April in Santa Barbara, pack light layers you can adjust through the day, with typical highs of 18.5°C and lows of 10°C.
Relative humidity in April averages 69% — moderately humid.
Average wind speed in April is 3.4 m/s. The windiest April on record averaged 4.7 m/s (1984).
The wettest April on record was 2006 with 120 mm. On average, April sees 25 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Santa Barbara behaves each April, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for April specifically, along with year-by-year records and how the month has changed over the decades.
