March is one of the cooler months of the year in Santa Ana, with average highs near 17.1°C and lows around 12.7°C (mean 14.9°C). It is a relatively wet time of year, averaging 54 mm of rainfall and 75% relative humidity across the period.
March is one of the cooler months of the year in Santa Ana. Across 45 years of records, the warmest March in Santa Ana was 2015 — when the month averaged 18.3°C — while the coldest was 2006 at 12.8°C. Typical March days reach 17.1°C with nights near 12.7°C. The long-term March temperature trend is broadly flat.
March is a relatively wet time of year in Santa Ana, averaging 54 mm of rainfall. The wettest March on record was 2023 with 176 mm, while the driest was 1997 at 0 mm.
Relative humidity in Santa Ana during March averages 75%. The most humid March was 2001 at 83%, and the least humid was 1984 at 64%.
March receives about 5.2 kWh/m²/day of solar energy in Santa Ana. The sunniest March was 2008 at 6 kWh/m²/day, and the cloudiest was 1992 at 4.2.
Average wind speed in Santa Ana during March is 3 m/s. The windiest Marchs were 1983 and 1991 at 4.4 m/s, while the calmest was 2015 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.2°C | 14.8°C | 14.7°C | 15.4°C | 14.4°C | -0.8°C |
| Avg High | 17.8°C | 16.9°C | 16.9°C | 17.5°C | 16.3°C | -1.5°C |
| Avg Low | 12.6°C | 12.7°C | 12.5°C | 13.2°C | 12.5°C | -0.1°C |
| Avg Rain | 59 mm | 73 mm | 25 mm | 38 mm | 86 mm | +27 mm |
March temperatures in Santa Ana have fallen by about 0.5°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 7.7°C (1991) to a record high of 28°C (1988).
Rainfall in March is a relatively wet time of year, averaging 54 mm, with a wettest year of 176 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A quieter season to visit Santa Ana
If your dates are flexible, the more temperate months of August and September tend to be the most comfortable for visiting Santa Ana. That said, March — with days averaging 17.1°C and nights around 12.7°C (mean 14.9°C) and moderate rainfall (54 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 16.1°C | 14.1°C | 12.1°C | 21.0°C | 9.5°C | 55 mm | 81% | 3.4 m/s | 5.1 |
| 2024 | 16.2°C | 14.7°C | 13.2°C | 19.2°C | 12.1°C | 94 mm | 83% | 3.3 m/s | 5.1 |
| 2023 🌧️ | 14.5°C | 12.9°C | 11.2°C | 18.8°C | 8.7°C | 176 mm | 80% | 3.4 m/s | 4.7 |
| 2022 | 18.3°C | 16.0°C | 13.6°C | 24.3°C | 10.4°C | 37 mm | 74% | 2.8 m/s | 5.9 |
| 2021 | 16.3°C | 14.0°C | 11.7°C | 26.2°C | 8.6°C | 35 mm | 72% | 3.2 m/s | 5.7 |
| 2020 | 16.3°C | 14.6°C | 12.9°C | 21.0°C | 10.8°C | 118 mm | 78% | 3.1 m/s | 4.8 |
| 2019 | 16.6°C | 14.7°C | 12.9°C | 22.6°C | 11.1°C | 72 mm | 81% | 3 m/s | 5.2 |
| 2018 | 16.9°C | 15.0°C | 13.0°C | 20.5°C | 10.5°C | 77 mm | 74% | 2.8 m/s | 5.2 |
| 2017 | 18.5°C | 16.2°C | 13.9°C | 21.6°C | 10.2°C | 8 mm | 76% | 2.6 m/s | 5.8 |
| 2016 | 17.9°C | 15.9°C | 13.8°C | 23.5°C | 11.6°C | 51 mm | 78% | 3.1 m/s | 5.6 |
| 2015 🔥 | 20.8°C | 18.3°C | 15.8°C | 27.7°C | 12.4°C | 15 mm | 69% | 2.2 m/s | 5.8 |
| 2014 | 18.4°C | 16.3°C | 14.1°C | 24.9°C | 12.5°C | 18 mm | 76% | 2.7 m/s | 5.5 |
| 2013 | 16.7°C | 14.6°C | 12.4°C | 23.3°C | 10.2°C | 17 mm | 76% | 2.3 m/s | 5.5 |
| 2012 | 15.9°C | 13.7°C | 11.5°C | 23.5°C | 8.9°C | 44 mm | 73% | 3 m/s | 5.3 |
| 2011 | 16.1°C | 14.1°C | 12.0°C | 24.1°C | 10.1°C | 69 mm | 78% | 2.9 m/s | 5.2 |
| 2010 | 17.3°C | 15.0°C | 12.6°C | 23.5°C | 9.8°C | 9 mm | 71% | 3 m/s | 5.7 |
| 2009 | 16.4°C | 14.2°C | 12.1°C | 21.5°C | 9.7°C | 5 mm | 74% | 2.5 m/s | 5.6 |
| 2008 | 17.5°C | 15.0°C | 12.4°C | 25.2°C | 9.5°C | 2 mm | 73% | 2.5 m/s | 6 |
| 2007 | 17.6°C | 15.1°C | 12.6°C | 25.9°C | 9.4°C | 3 mm | 71% | 2.5 m/s | 5.5 |
| 2006 ❄️ | 14.5°C | 12.8°C | 11.1°C | 19.6°C | 8.8°C | 58 mm | 74% | 3.3 m/s | 5 |
| 2005 | 17.1°C | 15.2°C | 13.3°C | 21.8°C | 11.9°C | 30 mm | 80% | 3 m/s | 5 |
| 2004 | 19.1°C | 16.4°C | 13.8°C | 26.3°C | 11.1°C | 15 mm | 75% | 2.3 m/s | 5.4 |
| 2003 | 17.6°C | 15.3°C | 12.9°C | 24.3°C | 10.3°C | 41 mm | 74% | 2.9 m/s | 5.6 |
| 2002 | 16.4°C | 14.2°C | 11.9°C | 20.5°C | 9.0°C | 8 mm | 70% | 3.4 m/s | 5.6 |
| 2001 | 15.8°C | 14.1°C | 12.4°C | 21.9°C | 10.7°C | 42 mm | 83% | 2.8 m/s | 4.9 |
| 2000 | 16.5°C | 14.4°C | 12.3°C | 21.4°C | 10.1°C | 51 mm | 76% | 2.8 m/s | 5.3 |
| 1999 | 14.8°C | 13.1°C | 11.4°C | 18.8°C | 9.1°C | 42 mm | 76% | 3.2 m/s | 4.9 |
| 1998 | 16.6°C | 14.9°C | 13.1°C | 22.5°C | 9.6°C | 77 mm | 77% | 3.3 m/s | 5 |
| 1997 | 18.9°C | 16.1°C | 13.2°C | 25.4°C | 8.9°C | 0 mm | 71% | 2.3 m/s | 5.4 |
| 1996 | 17.1°C | 14.9°C | 12.7°C | 21.3°C | 10.5°C | 40 mm | 77% | 2.8 m/s | 5.2 |
| 1995 | 17.4°C | 15.4°C | 13.3°C | 21.3°C | 9.4°C | 157 mm | 78% | 3.3 m/s | 4.9 |
| 1994 | 17.8°C | 15.6°C | 13.3°C | 26.5°C | 10.6°C | 56 mm | 75% | 2.5 m/s | 5 |
| 1993 | 17.7°C | 15.7°C | 13.6°C | 22.7°C | 10.6°C | 53 mm | 79% | 2.6 m/s | 4.9 |
| 1992 | 16.4°C | 15.0°C | 13.6°C | 19.0°C | 12.5°C | 158 mm | 80% | 2.9 m/s | 4.2 |
| 1991 | 15.4°C | 13.2°C | 11.0°C | 19.4°C | 7.7°C | 143 mm | 73% | 4.4 m/s | 5.2 |
| 1990 | 16.8°C | 14.5°C | 12.2°C | 21.8°C | 8.6°C | 5 mm | 72% | 2.8 m/s | 4.8 |
| 1989 | 18.0°C | 15.4°C | 12.7°C | 22.7°C | 8.1°C | 26 mm | 72% | 3.2 m/s | 5.3 |
| 1988 | 20.1°C | 16.6°C | 13.1°C | 28.0°C | 9.9°C | 3 mm | 64% | 3 m/s | 5.6 |
| 1987 | 17.7°C | 14.9°C | 12.2°C | 22.1°C | 9.5°C | 24 mm | 69% | 3.6 m/s | 4.9 |
| 1986 | 18.4°C | 16.0°C | 13.6°C | 23.9°C | 10.1°C | 95 mm | 77% | 2.9 m/s | 4.4 |
| 1985 | 16.2°C | 13.7°C | 11.3°C | 21.4°C | 8.5°C | 16 mm | 70% | 3.4 m/s | 5 |
| 1984 | 20.0°C | 16.9°C | 13.7°C | 24.8°C | 11.6°C | 3 mm | 64% | 3.5 m/s | 5.1 |
| 1983 | 16.6°C | 14.8°C | 12.9°C | 20.8°C | 10.1°C | 175 mm | 79% | 4.4 m/s | — |
| 1982 | 16.2°C | 14.0°C | 11.8°C | 20.6°C | 8.9°C | 112 mm | 73% | 3.4 m/s | — |
| 1981 | 17.0°C | 14.6°C | 12.3°C | 21.7°C | 10.6°C | 75 mm | 74% | 3.4 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 17.1°C with lows near 12.7°C (mean 14.9°C), based on 45 years of NASA POWER data.
March averages 54 mm of rainfall in Santa Ana, a relatively wet time of year. The wettest on record was 176 mm in 2023.
The hottest March reached 28°C in 1988. The coldest dipped to 7.7°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have fallen by about 0.5°C. Daytime highs moved from 17.2°C to 16.3°C and overnight lows from 12.4°C to 12.4°C over the same span.
March is one of the cooler months of the year in Santa Ana and a relatively wet time of year, so plan for around 17.1°C daytime highs and 12.7°C at night.
Not quite — March is the 3rd coolest month in Santa Ana, averaging 14.9°C.
For March in Santa Ana, pack light layers you can adjust through the day, with typical highs of 17.1°C and lows of 12.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 75% — moderately humid.
Average wind speed in March is 3 m/s. The windiest March on record averaged 4.4 m/s (1983).
The wettest March on record was 2023 with 176 mm. On average, March sees 54 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 March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
