Temperatures in December
It's pleasantly warm in December in Santa Monica with an average temperature of 19°C. Temperatures this month range from a low of 17°C to a high of 21°C. At night, you can expect temperatures between 9°C and 12°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Santa Monica in December. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of December
The month of December starts in Santa Monica with mild temperatures, averaging around 21°C during the day and nights close to 12°C. There’s little chance of precipitation. The weather is mostly sunny and dry.
Mid-December
By mid-December, the average daytime temperature drops to around 20°C, with nights close to 11°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of December
By the end of December, the average daytime temperature in Santa Monica will be around 18°C, with nights close to 10°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Water temperature
The water temperature at Santa Monica is 17°C this month. You can swim, but it's a bit on the chilly side.
Precipitation in December
In December, there is an average of 76 mm of precipitation, spread over 5 days. The wind speed is around 3 Bft, mostly coming from the South.
The precipitation chance averages 17% per day this month.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in December for Santa Monica. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Santa Monica in December |
London | ||
|---|---|---|---|
 Average Temperature |
19°C | 9°C | |
 High Temp |
21°C | 11°C | |
| Low Temp |
17°C | 8°C | |
 Total Precipitation |
76 mm | 67 mm | |
| Rainy Days |
5 days | 10 days | |
November
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is December a good time to visit Santa Monica?
Want nice weather? Then December is a great time to be in Santa Monica. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Santa Monica in December
With 28°C, Santa Monica hit the highest temperature in the last 10 years in December 2017. The lowest daytime temperature in this month was 11°C in 2021. The extreme night temperatures ranged from a low of 3°C to a high of 17°C.
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Daily Temperature in December in Santa Monica
This chart shows the average daily temperatures, both day and night, for each day in December in Santa Monica, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in December in Santa Monica
The chart below shows the average daily precipitation in December for Santa Monica, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for December, you can expect around 5 days of rain in Santa Monica.
Daily UV Index in December in Santa Monica
This chart shows the average daily UV index in December in Santa Monica, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in Santa Monica Over the Years
This chart shows the average temperature in December in Santa Monica, measured in degrees Celsius, over the past years.
Total Precipitation in December in Santa Monica Over the Years
This chart shows the average precipitation in December in Santa Monica, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in December for Santa Monica
Click on a specific day in December for detailed info on the typical weather on that day in Santa Monica. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Santa Monica
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Average Weather in Santa Monica by Month
Click on a month below to see detailed weather info for Santa Monica. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Santa Monica for all months at once
