May is one of the cooler months of the year in Oxnard, with average highs near 18.3°C and lows around 14.4°C (mean 16.4°C). It is one of the drier months, averaging 9 mm of rainfall and 76% relative humidity across the period.
May is one of the cooler months of the year in Oxnard. Across 45 years of records, the warmest Mays in Oxnard were 1984 and 1997 — when the month averaged 19.5°C — while the coldest were 1995 and 2024 at 14.7°C. Typical May days reach 18.3°C with nights near 14.4°C. The long-term trend is cooling, about 0.3°C per decade.
May is one of the drier months in Oxnard, averaging 9 mm of rainfall. The wettest May on record was 1998 with 71 mm, while the driest were 2004, 2007 and 2022, among others at 0 mm.
Relative humidity in Oxnard during May averages 76%. The most humid May was 2024 at 86%, and the least humid was 1984 at 61%.
May receives about 7.3 kWh/m²/day of solar energy in Oxnard. The sunniest May was 2004 at 8.3 kWh/m²/day, and the cloudiest were 1995, 1998 and 2019 at 6.5.
Average wind speed in Oxnard during May is 2.9 m/s. The windiest May was 1991 at 3.7 m/s, while the calmest was 2001 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.1°C | 16.5°C | 16.2°C | 16.0°C | 15.9°C | -1.2°C |
| Avg High | 19.3°C | 18.4°C | 18.1°C | 17.8°C | 17.7°C | -1.6°C |
| Avg Low | 14.8°C | 14.5°C | 14.3°C | 14.2°C | 14.1°C | -0.7°C |
| Avg Rain | 2 mm | 14 mm | 11 mm | 9 mm | 4 mm | +3 mm |
May temperatures in Oxnard have fallen by about 1.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 11.1°C (2010) to a record high of 30.2°C (1997).
Rainfall in May is one of the drier months, averaging 9 mm, with a wettest year of 71 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows fell 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Oxnard
May is a good time to visit Oxnard, with days averaging 18.3°C and nights around 14.4°C (mean 16.4°C, close to Oxnard's yearly average) and low rainfall. September and August are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 18.6°C | 16.6°C | 14.6°C | 24.3°C | 12.6°C | 3 mm | 79% | 2.8 m/s | 7.5 |
| 2024 | 16.3°C | 14.7°C | 13.1°C | 19.9°C | 12.2°C | 1 mm | 86% | 2.6 m/s | 7.2 |
| 2023 | 16.2°C | 15.0°C | 13.7°C | 18.3°C | 11.8°C | 20 mm | 86% | 2.8 m/s | 6.7 |
| 2022 | 18.2°C | 16.1°C | 13.9°C | 25.9°C | 11.9°C | 0 mm | 76% | 3.1 m/s | 8 |
| 2021 | 17.7°C | 15.8°C | 13.9°C | 25.1°C | 12.6°C | 0 mm | 78% | 3 m/s | 7.7 |
| 2020 | 19.1°C | 17.2°C | 15.3°C | 27.2°C | 14.1°C | 2 mm | 78% | 2.9 m/s | 7.9 |
| 2019 | 16.3°C | 15.0°C | 13.7°C | 18.1°C | 12.2°C | 47 mm | 85% | 2.9 m/s | 6.5 |
| 2018 | 17.1°C | 15.6°C | 14.0°C | 22.1°C | 12.1°C | 2 mm | 80% | 3 m/s | 7.1 |
| 2017 | 17.7°C | 16.1°C | 14.4°C | 24.0°C | 11.7°C | 3 mm | 79% | 2.9 m/s | 7.4 |
| 2016 | 17.0°C | 15.5°C | 14.1°C | 19.4°C | 13.0°C | 3 mm | 83% | 2.8 m/s | 6.8 |
| 2015 | 17.0°C | 15.6°C | 14.1°C | 19.4°C | 12.5°C | 7 mm | 79% | 2.9 m/s | 7 |
| 2014 | 20.4°C | 18.1°C | 15.9°C | 29.7°C | 12.9°C | 1 mm | 68% | 3.1 m/s | 7.9 |
| 2013 | 20.2°C | 17.8°C | 15.5°C | 27.2°C | 13.3°C | 6 mm | 71% | 3.2 m/s | 7.8 |
| 2012 | 18.3°C | 16.2°C | 14.1°C | 23.9°C | 12.2°C | 0 mm | 74% | 3 m/s | 8.1 |
| 2011 | 17.3°C | 15.3°C | 13.3°C | 26.0°C | 11.5°C | 16 mm | 76% | 3.4 m/s | 7.8 |
| 2010 | 17.1°C | 15.1°C | 13.0°C | 24.2°C | 11.1°C | 5 mm | 76% | 3.1 m/s | 7.8 |
| 2009 | 18.2°C | 16.2°C | 14.1°C | 25.3°C | 12.5°C | 1 mm | 78% | 2.5 m/s | 7.3 |
| 2008 | 17.7°C | 15.9°C | 14.0°C | 27.7°C | 11.6°C | 3 mm | 74% | 2.8 m/s | 7.3 |
| 2007 | 17.3°C | 15.2°C | 13.1°C | 27.4°C | 11.8°C | 0 mm | 77% | 2.5 m/s | 7.7 |
| 2006 | 17.7°C | 16.1°C | 14.4°C | 22.4°C | 13.2°C | 32 mm | 83% | 2.3 m/s | 6.9 |
| 2005 | 18.7°C | 16.8°C | 15.0°C | 25.6°C | 13.2°C | 21 mm | 80% | 2.7 m/s | 7.5 |
| 2004 | 19.3°C | 17.4°C | 15.5°C | 26.2°C | 13.6°C | 0 mm | 70% | 3.1 m/s | 8.3 |
| 2003 | 17.2°C | 15.5°C | 13.8°C | 22.5°C | 11.5°C | 46 mm | 79% | 2.6 m/s | 7.1 |
| 2002 | 16.9°C | 15.0°C | 13.1°C | 22.6°C | 11.6°C | 4 mm | 78% | 2.8 m/s | 7.8 |
| 2001 | 18.4°C | 16.6°C | 14.8°C | 22.4°C | 13.0°C | 2 mm | 82% | 2.1 m/s | 7.2 |
| 2000 | 19.2°C | 17.2°C | 15.1°C | 23.9°C | 13.0°C | 1 mm | 74% | 3 m/s | 7.5 |
| 1999 | 17.3°C | 15.4°C | 13.4°C | 22.2°C | 11.4°C | 6 mm | 75% | 3.2 m/s | 7.7 |
| 1998 🌧️ | 17.0°C | 15.5°C | 13.9°C | 18.8°C | 12.1°C | 71 mm | 81% | 3.5 m/s | 6.5 |
| 1997 | 22.0°C | 19.5°C | 17.0°C | 30.2°C | 14.4°C | 0 mm | 69% | 2.5 m/s | 7.6 |
| 1996 | 20.0°C | 17.9°C | 15.7°C | 23.6°C | 13.3°C | 6 mm | 71% | 3.2 m/s | 7.8 |
| 1995 ❄️ | 16.3°C | 14.7°C | 13.1°C | 19.3°C | 11.5°C | 25 mm | 83% | 3.3 m/s | 6.5 |
| 1994 | 16.8°C | 15.2°C | 13.6°C | 19.0°C | 12.6°C | 10 mm | 81% | 2.5 m/s | 7 |
| 1993 | 19.5°C | 17.4°C | 15.3°C | 26.2°C | 12.9°C | 2 mm | 76% | 3.1 m/s | 7.6 |
| 1992 | 19.1°C | 17.5°C | 15.9°C | 21.4°C | 15.2°C | 3 mm | 83% | 2.4 m/s | 6.8 |
| 1991 | 17.0°C | 14.9°C | 12.8°C | 23.9°C | 11.3°C | 0 mm | 74% | 3.7 m/s | 7.5 |
| 1990 | 18.9°C | 16.8°C | 14.7°C | 28.5°C | 13.1°C | 20 mm | 71% | 3.6 m/s | 7.6 |
| 1989 | 18.9°C | 16.8°C | 14.6°C | 22.2°C | 12.6°C | 5 mm | 70% | 3.2 m/s | 7.5 |
| 1988 | 19.4°C | 17.0°C | 14.6°C | 25.8°C | 11.5°C | 1 mm | 67% | 3.4 m/s | 7 |
| 1987 | 19.9°C | 17.8°C | 15.7°C | 27.0°C | 13.4°C | 2 mm | 70% | 2.9 m/s | 6.6 |
| 1986 | 18.7°C | 16.6°C | 14.6°C | 23.9°C | 11.7°C | 0 mm | 72% | 2.6 m/s | 7.3 |
| 1985 | 17.9°C | 16.0°C | 14.0°C | 21.1°C | 11.6°C | 1 mm | 70% | 2.8 m/s | 7 |
| 1984 🔥 | 22.4°C | 19.5°C | 16.6°C | 28.6°C | 13.0°C | 0 mm | 61% | 3 m/s | 6.8 |
| 1983 | 19.2°C | 16.9°C | 14.5°C | 24.5°C | 12.1°C | 3 mm | 75% | 3.3 m/s | — |
| 1982 | 17.9°C | 16.1°C | 14.4°C | 22.4°C | 12.5°C | 3 mm | 77% | 3 m/s | — |
| 1981 | 19.5°C | 17.0°C | 14.6°C | 24.7°C | 12.3°C | 1 mm | 70% | 3.1 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 18.3°C with lows near 14.4°C (mean 16.4°C), based on 45 years of NASA POWER data.
May averages 9 mm of rainfall in Oxnard, one of the drier months. The wettest on record was 71 mm in 1998.
The hottest May reached 30.2°C in 1997. The coldest dipped to 11.1°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 1.5°C. Daytime highs moved from 19.4°C to 17.4°C and overnight lows from 14.8°C to 13.8°C over the same span.
May is one of the cooler months of the year in Oxnard and one of the drier months, so plan for around 18.3°C daytime highs and 14.4°C at night.
Not quite — May is the 6th coolest month in Oxnard, averaging 16.4°C.
For May in Oxnard, pack light layers you can adjust through the day, with typical highs of 18.3°C and lows of 14.4°C.
Relative humidity in May averages 76% — quite humid.
Average wind speed in May is 2.9 m/s. The windiest May on record averaged 3.7 m/s (1991).
The wettest May on record was 1998 with 71 mm. On average, May sees 9 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 Oxnard behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
