August is one of the warmer months of the year in Santa Ana, with average highs near 23.4°C and lows around 19°C (mean 21.2°C). It is one of the drier months, averaging 3 mm of rainfall and 75% relative humidity across the period.
August is one of the warmer months of the year in Santa Ana. Across 45 years of records, the warmest August in Santa Ana was 1984 — when the month averaged 23.4°C — while the coldest was 2010 at 18.9°C. Typical August days reach 23.4°C with nights near 19°C. The long-term August temperature trend is broadly flat.
August is one of the drier months in Santa Ana, averaging 3 mm of rainfall. The wettest August on record was 2023 with 58 mm, while the driest were 2011, 2016 and 2024, among others at 0 mm.
Relative humidity in Santa Ana during August averages 75%. The most humid August was 2023 at 79%, and the least humid was 1981 at 67%.
August receives about 6.9 kWh/m²/day of solar energy in Santa Ana. The sunniest Augusts were 2010, 2019 and 2024, among others at 7.3 kWh/m²/day, and the cloudiest was 1984 at 6.2.
Average wind speed in Santa Ana during August is 2.3 m/s. The windiest Augusts were 1995, 2022 and 2023, among others at 2.5 m/s, while the calmest was 2005 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.6°C | 21.4°C | 20.7°C | 20.8°C | 21.5°C | -0.1°C |
| Avg High | 24.0°C | 23.7°C | 22.8°C | 23.0°C | 23.6°C | -0.4°C |
| Avg Low | 19.1°C | 19.1°C | 18.7°C | 18.7°C | 19.4°C | +0.3°C |
| Avg Rain | 3 mm | 1 mm | 2 mm | 1 mm | 10 mm | +7 mm |
August temperatures in Santa Ana have fallen by about 0.8°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 14.4°C (2010) to a record high of 30.4°C (1983).
Rainfall in August is one of the drier months, averaging 3 mm, with a wettest year of 58 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
One of the best times to visit Santa Ana
August is one of the best times to visit Santa Ana. Expect days averaging 23.4°C and nights around 19°C (mean 21.2°C) — warmer than Santa Ana's yearly average — with low rainfall (3 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 23.5°C | 21.2°C | 19.0°C | 26.8°C | 16.7°C | 1 mm | 76% | 2.1 m/s | 7 |
| 2024 | 23.5°C | 21.3°C | 19.1°C | 26.8°C | 16.9°C | 0 mm | 75% | 2.2 m/s | 7.3 |
| 2023 🌧️ | 23.5°C | 21.5°C | 19.5°C | 26.9°C | 18.1°C | 58 mm | 79% | 2.5 m/s | 6.8 |
| 2022 | 24.1°C | 22.1°C | 20.1°C | 26.8°C | 18.7°C | 0 mm | 74% | 2.5 m/s | 7 |
| 2021 | 23.1°C | 21.0°C | 19.0°C | 27.6°C | 16.5°C | 1 mm | 75% | 2.2 m/s | 6.7 |
| 2020 | 24.1°C | 21.9°C | 19.8°C | 28.5°C | 16.5°C | 0 mm | 77% | 2.4 m/s | 7.1 |
| 2019 | 23.1°C | 20.7°C | 18.3°C | 27.4°C | 15.8°C | 0 mm | 75% | 2.1 m/s | 7.3 |
| 2018 | 24.9°C | 22.7°C | 20.5°C | 29.9°C | 18.1°C | 0 mm | 74% | 2.2 m/s | 7.2 |
| 2017 | 22.9°C | 20.9°C | 18.8°C | 28.9°C | 16.6°C | 2 mm | 75% | 2.2 m/s | 6.8 |
| 2016 | 22.7°C | 20.6°C | 18.6°C | 26.0°C | 16.9°C | 0 mm | 77% | 2.4 m/s | 7.2 |
| 2015 | 24.3°C | 22.1°C | 19.9°C | 28.3°C | 17.5°C | 1 mm | 77% | 2.4 m/s | 7 |
| 2014 | 23.7°C | 21.5°C | 19.3°C | 27.5°C | 16.9°C | 3 mm | 76% | 2.1 m/s | 7.1 |
| 2013 | 21.8°C | 19.7°C | 17.6°C | 27.4°C | 15.3°C | 0 mm | 75% | 2.1 m/s | 6.9 |
| 2012 | 24.0°C | 21.8°C | 19.7°C | 27.4°C | 16.5°C | 1 mm | 73% | 2.1 m/s | 6.9 |
| 2011 | 21.3°C | 19.3°C | 17.2°C | 25.8°C | 15.3°C | 0 mm | 77% | 2.2 m/s | 7.1 |
| 2010 ❄️ | 21.0°C | 18.9°C | 16.7°C | 25.8°C | 14.4°C | 0 mm | 75% | 2.1 m/s | 7.3 |
| 2009 | 22.8°C | 20.5°C | 18.2°C | 29.0°C | 15.4°C | 0 mm | 74% | 2.3 m/s | 7.1 |
| 2008 | 23.2°C | 21.1°C | 18.9°C | 24.7°C | 17.3°C | 0 mm | 76% | 2.1 m/s | 7 |
| 2007 | 23.5°C | 21.4°C | 19.3°C | 25.9°C | 16.9°C | 1 mm | 76% | 2.1 m/s | 7.1 |
| 2006 | 22.9°C | 20.9°C | 18.9°C | 24.8°C | 16.9°C | 0 mm | 75% | 2.3 m/s | 7.3 |
| 2005 | 22.6°C | 20.5°C | 18.5°C | 25.7°C | 17.1°C | 1 mm | 77% | 1.9 m/s | 6.8 |
| 2004 | 22.2°C | 20.3°C | 18.3°C | 24.7°C | 16.5°C | 1 mm | 77% | 2.1 m/s | 7 |
| 2003 | 23.8°C | 21.6°C | 19.5°C | 26.3°C | 18.1°C | 1 mm | 76% | 2.4 m/s | 7.2 |
| 2002 | 21.8°C | 19.7°C | 17.6°C | 24.4°C | 16.3°C | 0 mm | 78% | 2.1 m/s | 6.9 |
| 2001 | 22.1°C | 20.1°C | 18.1°C | 24.0°C | 16.6°C | 0 mm | 77% | 2.2 m/s | 7 |
| 2000 | 23.3°C | 21.3°C | 19.3°C | 25.9°C | 17.5°C | 12 mm | 76% | 2.2 m/s | 6.8 |
| 1999 | 22.1°C | 20.0°C | 17.8°C | 24.3°C | 16.3°C | 0 mm | 74% | 2.4 m/s | 7.1 |
| 1998 | 24.9°C | 22.7°C | 20.5°C | 28.2°C | 18.5°C | 2 mm | 72% | 2.1 m/s | 6.9 |
| 1997 | 24.5°C | 22.3°C | 20.2°C | 27.5°C | 17.9°C | 0 mm | 75% | 2.4 m/s | 7 |
| 1996 | 24.2°C | 21.8°C | 19.3°C | 26.7°C | 16.9°C | 0 mm | 74% | 2.3 m/s | 7.2 |
| 1995 | 23.3°C | 21.0°C | 18.7°C | 26.5°C | 16.4°C | 0 mm | 74% | 2.5 m/s | 6.8 |
| 1994 | 24.6°C | 22.4°C | 20.1°C | 27.5°C | 17.5°C | 0 mm | 73% | 2.2 m/s | 6.7 |
| 1993 | 22.5°C | 20.4°C | 18.2°C | 24.4°C | 15.9°C | 0 mm | 77% | 2.2 m/s | 6.6 |
| 1992 | 24.8°C | 22.5°C | 20.2°C | 27.1°C | 17.7°C | 2 mm | 75% | 2.3 m/s | 6.7 |
| 1991 | 22.2°C | 19.9°C | 17.7°C | 27.4°C | 15.9°C | 1 mm | 77% | 2.2 m/s | 6.5 |
| 1990 | 23.5°C | 21.1°C | 18.7°C | 25.5°C | 17.0°C | 1 mm | 75% | 2.4 m/s | 6.6 |
| 1989 | 22.7°C | 20.3°C | 17.9°C | 24.8°C | 16.6°C | 0 mm | 74% | 2.4 m/s | 6.9 |
| 1988 | 23.0°C | 20.7°C | 18.4°C | 25.6°C | 16.7°C | 2 mm | 75% | 2.5 m/s | 6.6 |
| 1987 | 22.5°C | 20.3°C | 18.1°C | 24.3°C | 16.0°C | 1 mm | 74% | 2.5 m/s | 6.7 |
| 1986 | 24.3°C | 21.7°C | 19.1°C | 27.9°C | 17.3°C | 0 mm | 68% | 2 m/s | 7 |
| 1985 | 24.2°C | 21.5°C | 18.8°C | 30.2°C | 17.2°C | 0 mm | 68% | 2.2 m/s | 6.9 |
| 1984 🔥 | 25.7°C | 23.4°C | 21.1°C | 28.0°C | 19.2°C | 4 mm | 69% | 2.3 m/s | 6.2 |
| 1983 | 25.3°C | 22.9°C | 20.6°C | 30.4°C | 18.2°C | 17 mm | 72% | 2.3 m/s | — |
| 1982 | 23.8°C | 21.4°C | 19.0°C | 26.7°C | 16.8°C | 1 mm | 70% | 2.3 m/s | — |
| 1981 | 24.5°C | 21.9°C | 19.3°C | 28.9°C | 17.4°C | 0 mm | 67% | 2.4 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 23.4°C with lows near 19°C (mean 21.2°C), based on 45 years of NASA POWER data.
August averages 3 mm of rainfall in Santa Ana, one of the drier months. The wettest on record was 58 mm in 2023.
The hottest August reached 30.4°C in 1983. The coldest dipped to 14.4°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have fallen by about 0.8°C. Daytime highs moved from 24.7°C to 23.5°C and overnight lows from 19.8°C to 19.3°C over the same span.
August is one of the warmer months of the year in Santa Ana and one of the drier months, so plan for around 23.4°C daytime highs and 19°C at night.
Not quite — August is the 12th coolest month in Santa Ana, averaging 21.2°C.
For August in Santa Ana, pack light layers you can adjust through the day, with typical highs of 23.4°C and lows of 19°C.
Relative humidity in August averages 75% — moderately humid.
Average wind speed in August is 2.3 m/s. The windiest August on record averaged 2.5 m/s (1987).
The wettest August on record was 2023 with 58 mm. On average, August sees 3 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 Ana behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
