December is one of the cooler months of the year in Oxnard, with average highs near 17.1°C and lows around 13.4°C (mean 15.3°C). It is a relatively wet time of year, averaging 79 mm of rainfall and 68% relative humidity across the period.
December is one of the cooler months of the year in Oxnard. Across 45 years of records, the warmest December in Oxnard was 2017 — when the month averaged 17.6°C — while the coldest was 1984 at 13.5°C. Typical December days reach 17.1°C with nights near 13.4°C. The long-term trend is warming, about 0.2°C per decade.
December is a relatively wet time of year in Oxnard, averaging 79 mm of rainfall. The wettest December on record was 2021 with 291 mm, while the driest were 1989 and 2017 at 0 mm.
Relative humidity in Oxnard during December averages 68%. The most humid December was 2019 at 79%, and the least humid was 1990 at 56%.
December receives about 2.7 kWh/m²/day of solar energy in Oxnard. The sunniest December was 2013 at 3.2 kWh/m²/day, and the cloudiest were 2021 and 2022 at 2.4.
Average wind speed in Oxnard during December is 3.3 m/s. The windiest December was 1997 at 4.4 m/s, while the calmest was 2024 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.1°C | 15.0°C | 14.9°C | 15.5°C | 15.9°C | +0.8°C |
| Avg High | 17.0°C | 17.0°C | 16.7°C | 17.2°C | 17.7°C | +0.7°C |
| Avg Low | 13.1°C | 13.0°C | 13.1°C | 13.8°C | 14.2°C | +1.1°C |
| Avg Rain | 58 mm | 73 mm | 64 mm | 92 mm | 126 mm | +68 mm |
December temperatures in Oxnard have risen by about 1°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 5.7°C (1990) to a record high of 24.9°C (2017).
Rainfall in December is a relatively wet time of year, averaging 79 mm, with a wettest year of 291 mm.
A quieter season to visit Oxnard
If your dates are flexible, the more temperate months of September and August tend to be the most comfortable for visiting Oxnard. That said, December — with days averaging 17.1°C and nights around 13.4°C (mean 15.3°C) and moderate rainfall (79 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 | 19.0°C | 17.3°C | 15.7°C | 23.6°C | 13.1°C | 189 mm | 77% | 3 m/s | — |
| 2024 | 18.0°C | 15.9°C | 13.9°C | 24.4°C | 11.1°C | 1 mm | 74% | 2.4 m/s | 2.7 |
| 2023 | 18.7°C | 17.1°C | 15.4°C | 23.5°C | 13.7°C | 119 mm | 75% | 2.8 m/s | 2.5 |
| 2022 | 16.5°C | 15.1°C | 13.7°C | 23.1°C | 10.8°C | 113 mm | 75% | 2.8 m/s | 2.4 |
| 2021 🌧️ | 15.5°C | 14.1°C | 12.6°C | 22.1°C | 10.9°C | 291 mm | 78% | 3.2 m/s | 2.4 |
| 2020 | 18.3°C | 16.1°C | 14.0°C | 22.8°C | 11.2°C | 43 mm | 65% | 3.1 m/s | 2.9 |
| 2019 | 16.4°C | 15.0°C | 13.7°C | 19.9°C | 10.3°C | 173 mm | 79% | 3.4 m/s | 2.5 |
| 2018 | 17.4°C | 15.8°C | 14.1°C | 19.5°C | 11.9°C | 87 mm | 72% | 3.4 m/s | 2.9 |
| 2017 🔥 | 19.8°C | 17.6°C | 15.3°C | 24.9°C | 11.3°C | 0 mm | 57% | 2.5 m/s | 3.1 |
| 2016 | 16.7°C | 14.9°C | 13.2°C | 21.5°C | 10.5°C | 154 mm | 71% | 3.3 m/s | 2.7 |
| 2015 | 17.4°C | 15.7°C | 14.0°C | 23.5°C | 10.2°C | 26 mm | 62% | 4 m/s | 2.9 |
| 2014 | 17.8°C | 16.5°C | 15.2°C | 24.3°C | 10.5°C | 122 mm | 71% | 3.2 m/s | 2.6 |
| 2013 | 18.3°C | 16.0°C | 13.7°C | 23.4°C | 9.3°C | 6 mm | 59% | 2.9 m/s | 3.2 |
| 2012 | 15.9°C | 14.4°C | 12.9°C | 20.0°C | 10.1°C | 67 mm | 73% | 3.2 m/s | 2.6 |
| 2011 | 16.8°C | 14.9°C | 13.0°C | 22.3°C | 11.0°C | 14 mm | 63% | 2.5 m/s | 3 |
| 2010 | 15.9°C | 14.3°C | 12.8°C | 24.5°C | 8.9°C | 266 mm | 77% | 3.1 m/s | 2.5 |
| 2009 | 15.7°C | 14.2°C | 12.6°C | 21.7°C | 8.8°C | 84 mm | 68% | 3.1 m/s | 2.7 |
| 2008 | 16.0°C | 14.2°C | 12.4°C | 21.3°C | 9.4°C | 61 mm | 71% | 3.4 m/s | 2.8 |
| 2007 | 15.8°C | 13.8°C | 11.8°C | 23.4°C | 8.6°C | 52 mm | 68% | 3.4 m/s | 3 |
| 2006 | 17.9°C | 15.7°C | 13.5°C | 24.0°C | 11.0°C | 33 mm | 62% | 3.3 m/s | 3 |
| 2005 | 17.6°C | 15.7°C | 13.8°C | 22.9°C | 11.8°C | 36 mm | 70% | 2.6 m/s | 2.7 |
| 2004 | 17.7°C | 15.7°C | 13.7°C | 24.6°C | 11.9°C | 183 mm | 68% | 3.5 m/s | 2.8 |
| 2003 | 16.2°C | 14.6°C | 13.0°C | 19.8°C | 10.0°C | 51 mm | 71% | 3.2 m/s | 2.5 |
| 2002 | 16.0°C | 14.8°C | 13.5°C | 18.5°C | 10.3°C | 97 mm | 74% | 3.1 m/s | 2.7 |
| 2001 | 15.7°C | 14.1°C | 12.4°C | 22.5°C | 10.1°C | 42 mm | 73% | 3.3 m/s | 2.7 |
| 2000 | 18.4°C | 16.3°C | 14.1°C | 22.7°C | 11.2°C | 3 mm | 65% | 2.6 m/s | 2.8 |
| 1999 | 18.4°C | 15.9°C | 13.5°C | 22.9°C | 10.8°C | 4 mm | 59% | 3 m/s | 3.1 |
| 1998 | 16.5°C | 14.1°C | 11.8°C | 23.1°C | 7.4°C | 19 mm | 62% | 3.5 m/s | 3 |
| 1997 | 17.4°C | 15.6°C | 13.8°C | 21.7°C | 11.5°C | 171 mm | 66% | 4.4 m/s | 2.7 |
| 1996 | 16.3°C | 14.7°C | 13.2°C | 19.1°C | 11.4°C | 161 mm | 77% | 3.3 m/s | 2.5 |
| 1995 | 17.8°C | 15.9°C | 13.9°C | 24.0°C | 10.9°C | 66 mm | 72% | 3.6 m/s | 2.6 |
| 1994 | 16.5°C | 14.5°C | 12.6°C | 21.8°C | 10.8°C | 30 mm | 69% | 3.1 m/s | 2.8 |
| 1993 | 17.5°C | 15.3°C | 13.2°C | 23.0°C | 10.8°C | 38 mm | 64% | 3.4 m/s | 2.8 |
| 1992 | 16.0°C | 14.2°C | 12.4°C | 20.0°C | 10.0°C | 130 mm | 67% | 4 m/s | 2.7 |
| 1991 | 16.6°C | 14.9°C | 13.2°C | 19.8°C | 10.7°C | 112 mm | 68% | 3.1 m/s | 2.8 |
| 1990 | 17.0°C | 14.5°C | 12.0°C | 23.9°C | 5.7°C | 2 mm | 56% | 4 m/s | 2.9 |
| 1989 | 19.4°C | 17.0°C | 14.6°C | 24.0°C | 12.1°C | 0 mm | 57% | 3 m/s | 3 |
| 1988 | 16.2°C | 14.3°C | 12.4°C | 21.8°C | 8.2°C | 98 mm | 65% | 3.4 m/s | 2.6 |
| 1987 | 15.4°C | 13.8°C | 12.1°C | 21.1°C | 8.3°C | 93 mm | 67% | 4 m/s | 2.5 |
| 1986 | 18.2°C | 16.3°C | 14.4°C | 21.2°C | 12.7°C | 11 mm | 65% | 3 m/s | 2.5 |
| 1985 | 17.5°C | 15.3°C | 13.1°C | 21.7°C | 9.5°C | 20 mm | 66% | 3.2 m/s | 2.7 |
| 1984 ❄️ | 15.2°C | 13.5°C | 11.7°C | 17.2°C | 9.1°C | 118 mm | 72% | 3.9 m/s | 2.5 |
| 1983 | 16.8°C | 15.1°C | 13.4°C | 20.1°C | 11.1°C | 100 mm | 73% | 3.7 m/s | — |
| 1982 | 16.5°C | 14.6°C | 12.8°C | 20.2°C | 10.1°C | 60 mm | 66% | 4 m/s | — |
| 1981 | 18.2°C | 15.8°C | 13.5°C | 22.2°C | 11.2°C | 21 mm | 69% | 3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 17.1°C with lows near 13.4°C (mean 15.3°C), based on 45 years of NASA POWER data.
December averages 79 mm of rainfall in Oxnard, a relatively wet time of year. The wettest on record was 291 mm in 2021.
The hottest December reached 24.9°C in 2017. The coldest dipped to 5.7°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1°C. Daytime highs moved from 16.8°C to 17.5°C and overnight lows from 12.9°C to 14.3°C over the same span.
December is one of the cooler months of the year in Oxnard and a relatively wet time of year, so plan for around 17.1°C daytime highs and 13.4°C at night.
Not quite — December is the 4th coolest month in Oxnard, averaging 15.3°C.
For December in Oxnard, pack light layers you can adjust through the day, with typical highs of 17.1°C and lows of 13.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 68% — moderately humid.
Average wind speed in December is 3.3 m/s. The windiest December on record averaged 4.4 m/s (1997).
The wettest December on record was 2021 with 291 mm. On average, December sees 79 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 December, 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 December specifically, along with year-by-year records and how the month has changed over the decades.
