Monterey, California weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: July – September
What is the weather like in Monterey, California in December?
In December, Monterey, California is cool: daytime highs average 15 °C, and nights cool down to about 7 °C. The sea averages 13.1 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain falls on about 8 days, adding up to 90 mm. All in all, December is not an ideal month for a holiday in Monterey, California.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 29 | 22 | 23 |
| Day | 17° | 15° | 15° |
| Night | 9° | 7° | 7° |
| Sea | 14° | 13° | 13° |
| Sun | 6 h | 5 h | 6 h |
| Rain days | 6 | 8 | 8 |
More details for December
- Daylight
- 9 h 41 min07:12 – 16:53
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 13 km/haverage daily peakAll months
- Cloud cover
- 53 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−8America/Los_Angeles
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 20 %69 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- A jumper for the evenings
- Rain jacket or umbrella
Monterey, California in December: quick answers
Is Monterey, California hot in December?
No. In December, Monterey, California is cool: daytime highs average 15 °C and nights drop to about 7 °C.
Can you swim in Monterey, California in December?
Only if you don't mind cold water: in December the sea averages just 13.1 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Monterey, California in December?
Rain falls on about 8 days, adding up to 90 mm.
Monterey, California month by month
The whole year in Monterey, CaliforniaAll destinations: USAWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences