March is one of the cooler months of the year in Irvine, with average highs near 7.2°C and lows around 2.3°C (mean 4.8°C). It is about average for rainfall, averaging 97 mm of rainfall and 91% relative humidity across the period.
March is one of the cooler months of the year in Irvine. Across 45 years of records, the warmest March in Irvine was 2012 — when the month averaged 7.1°C — while the coldest was 2013 at 1.5°C. Typical March days reach 7.2°C with nights near 2.3°C. The long-term trend is warming, about 0.2°C per decade.
March is about average for rainfall in Irvine, averaging 97 mm of rainfall. The wettest March on record was 1994 with 164 mm, while the driest was 2012 at 41 mm.
Relative humidity in Irvine during March averages 91%. The most humid March was 1991 at 93%, and the least humid was 2022 at 88%.
March receives about 2.2 kWh/m²/day of solar energy in Irvine. The sunniest March was 2022 at 2.8 kWh/m²/day, and the cloudiest were 1990 and 1994 at 1.7.
Average wind speed in Irvine during March is 4.5 m/s. The windiest March was 1994 at 6.6 m/s, while the calmest was 2011 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.0°C | 4.9°C | 4.9°C | 4.7°C | 5.6°C | +1.6°C |
| Avg High | 6.2°C | 7.2°C | 7.4°C | 7.2°C | 8.3°C | +2.1°C |
| Avg Low | 1.7°C | 2.7°C | 2.3°C | 2.2°C | 2.8°C | +1.1°C |
| Avg Rain | 115 mm | 111 mm | 88 mm | 85 mm | 83 mm | -32 mm |
March temperatures in Irvine have risen by about 1.6°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -6.2°C (1986) to a record high of 16°C (2012).
Rainfall in March is about average for rainfall, averaging 97 mm, with a wettest year of 164 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.1°C per decade, widening the gap between day and night.
A quieter season to visit Irvine
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Irvine. That said, March — with days averaging 7.2°C and nights around 2.3°C (mean 4.8°C) and higher rainfall (97 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 | 9.5°C | 6.3°C | 3.1°C | 14.0°C | -1.9°C | 45 mm | 89% | 3.8 m/s | 2.5 |
| 2024 | 8.2°C | 5.8°C | 3.3°C | 12.0°C | -0.1°C | 108 mm | 91% | 4.5 m/s | 2.2 |
| 2023 | 7.3°C | 4.8°C | 2.3°C | 11.6°C | -2.8°C | 116 mm | 91% | 3.7 m/s | 2.3 |
| 2022 | 9.4°C | 6.0°C | 2.5°C | 15.5°C | -1.5°C | 46 mm | 88% | 3.6 m/s | 2.8 |
| 2021 | 8.2°C | 5.8°C | 3.4°C | 13.0°C | -1.8°C | 96 mm | 92% | 4.3 m/s | 2.2 |
| 2020 | 7.3°C | 4.6°C | 1.9°C | 10.8°C | -1.6°C | 87 mm | 91% | 4.6 m/s | 2.3 |
| 2019 | 7.8°C | 5.6°C | 3.4°C | 10.6°C | -0.4°C | 143 mm | 91% | 4.9 m/s | 2.2 |
| 2018 | 5.2°C | 2.9°C | 0.6°C | 8.2°C | -3.6°C | 74 mm | 90% | 4.6 m/s | 2.1 |
| 2017 | 8.4°C | 5.8°C | 3.2°C | 13.1°C | -0.3°C | 97 mm | 90% | 4 m/s | 2.4 |
| 2016 | 7.3°C | 4.7°C | 2.2°C | 10.8°C | -1.7°C | 73 mm | 91% | 3.5 m/s | 2.5 |
| 2015 | 7.1°C | 4.5°C | 1.8°C | 9.9°C | -1.7°C | 111 mm | 90% | 5 m/s | 2.3 |
| 2014 | 7.9°C | 5.4°C | 3.0°C | 11.7°C | -1.0°C | 96 mm | 91% | 4.8 m/s | 2.2 |
| 2013 ❄️ | 3.8°C | 1.5°C | -0.8°C | 7.3°C | -3.2°C | 45 mm | 89% | 4.4 m/s | 2.1 |
| 2012 🔥 | 9.9°C | 7.1°C | 4.3°C | 16.0°C | -0.3°C | 41 mm | 90% | 3.6 m/s | 2.4 |
| 2011 | 7.7°C | 5.0°C | 2.3°C | 11.9°C | -0.7°C | 68 mm | 91% | 3.1 m/s | 2.2 |
| 2010 | 6.6°C | 4.1°C | 1.6°C | 9.5°C | -4.2°C | 98 mm | 91% | 3.8 m/s | 2.3 |
| 2009 | 7.5°C | 5.2°C | 2.9°C | 11.5°C | -1.1°C | 97 mm | 91% | 4.8 m/s | 2.4 |
| 2008 | 6.4°C | 4.1°C | 1.7°C | 10.0°C | -1.8°C | 127 mm | 89% | 5.3 m/s | 2.4 |
| 2007 | 8.1°C | 5.4°C | 2.8°C | 12.2°C | -2.0°C | 92 mm | 91% | 5.1 m/s | 2.4 |
| 2006 | 5.3°C | 3.1°C | 0.8°C | 11.0°C | -2.9°C | 137 mm | 90% | 4.1 m/s | 2.1 |
| 2005 | 8.4°C | 6.0°C | 3.6°C | 13.4°C | -1.5°C | 69 mm | 92% | 4.2 m/s | 2.1 |
| 2004 | 7.7°C | 5.1°C | 2.5°C | 11.4°C | -2.0°C | 80 mm | 91% | 4.4 m/s | 2.3 |
| 2003 | 9.1°C | 5.9°C | 2.7°C | 13.8°C | -1.0°C | 54 mm | 90% | 3.7 m/s | 2.7 |
| 2002 | 8.2°C | 5.4°C | 2.7°C | 11.7°C | -1.7°C | 77 mm | 91% | 4.6 m/s | 2.5 |
| 2001 | 5.6°C | 3.0°C | 0.4°C | 10.2°C | -4.2°C | 61 mm | 90% | 4 m/s | 2.5 |
| 2000 | 8.0°C | 5.5°C | 3.1°C | 10.7°C | -1.3°C | 87 mm | 92% | 4.3 m/s | 2.1 |
| 1999 | 7.4°C | 5.0°C | 2.7°C | 11.7°C | -1.8°C | 100 mm | 92% | 4.4 m/s | 2.3 |
| 1998 | 8.2°C | 5.8°C | 3.5°C | 12.1°C | -1.0°C | 105 mm | 92% | 4.2 m/s | 1.9 |
| 1997 | 8.4°C | 6.1°C | 3.8°C | 12.1°C | -1.5°C | 103 mm | 92% | 4.8 m/s | 2 |
| 1996 | 5.8°C | 3.0°C | 0.2°C | 9.3°C | -2.4°C | 59 mm | 90% | 4.1 m/s | 2.1 |
| 1995 | 5.1°C | 3.0°C | 0.9°C | 10.2°C | -3.7°C | 115 mm | 91% | 5 m/s | 2 |
| 1994 🌧️ | 6.5°C | 4.4°C | 2.4°C | 9.8°C | -1.1°C | 164 mm | 91% | 6.6 m/s | 1.7 |
| 1993 | 7.0°C | 4.7°C | 2.4°C | 11.2°C | -1.5°C | 83 mm | 91% | 5 m/s | 1.8 |
| 1992 | 7.3°C | 5.3°C | 3.3°C | 10.1°C | -0.1°C | 153 mm | 91% | 5.5 m/s | 2 |
| 1991 | 8.1°C | 5.7°C | 3.3°C | 10.5°C | -1.5°C | 106 mm | 93% | 3.7 m/s | 1.8 |
| 1990 | 8.1°C | 6.2°C | 4.2°C | 12.1°C | -1.3°C | 119 mm | 91% | 6.4 m/s | 1.7 |
| 1989 | 7.0°C | 4.8°C | 2.5°C | 10.1°C | -2.5°C | 143 mm | 91% | 5.4 m/s | 1.8 |
| 1988 | 6.4°C | 4.2°C | 2.1°C | 10.8°C | -1.9°C | 128 mm | 91% | 4.3 m/s | 1.9 |
| 1987 | 4.8°C | 2.5°C | 0.3°C | 9.1°C | -2.8°C | 123 mm | 91% | 4.8 m/s | 2.2 |
| 1986 | 5.6°C | 3.5°C | 1.3°C | 9.1°C | -6.2°C | 128 mm | 92% | 5.5 m/s | 2.1 |
| 1985 | 5.7°C | 3.2°C | 0.8°C | 10.0°C | -2.7°C | 74 mm | 90% | 4.1 m/s | 1.9 |
| 1984 | 5.6°C | 3.1°C | 0.7°C | 8.9°C | -2.1°C | 59 mm | 90% | 3.4 m/s | 1.9 |
| 1983 | 6.8°C | 5.0°C | 3.2°C | 10.9°C | -0.4°C | 126 mm | 92% | 5 m/s | — |
| 1982 | 6.7°C | 4.3°C | 2.0°C | 11.8°C | -0.9°C | 123 mm | 90% | 4.9 m/s | — |
| 1981 | 7.5°C | 5.1°C | 2.7°C | 11.5°C | -1.5°C | 129 mm | 90% | 4.5 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 7.2°C with lows near 2.3°C (mean 4.8°C), based on 45 years of NASA POWER data.
March averages 97 mm of rainfall in Irvine, about average for rainfall. The wettest on record was 164 mm in 1994.
The hottest March reached 16°C in 2012. The coldest dipped to -6.2°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.6°C. Daytime highs moved from 6.5°C to 8.5°C and overnight lows from 1.9°C to 2.9°C over the same span.
March is one of the cooler months of the year in Irvine and about average for rainfall, so plan for around 7.2°C daytime highs and 2.3°C at night.
Not quite — March is the 4th coolest month in Irvine, averaging 4.8°C.
For March in Irvine, pack warm layers and a jacket for chilly mornings, with typical highs of 7.2°C and lows of 2.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 91% — quite humid.
Average wind speed in March is 4.5 m/s. The windiest March on record averaged 6.6 m/s (1994).
The wettest March on record was 1994 with 164 mm. On average, March sees 97 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 Irvine 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.
