Average weather for West Coast in December
It's pleasantly warm in December in West Coast with an average temperature of 19°C. Temperatures this month range from a low of 17°C to a high of 20°C. At night, you can expect temperatures between 10°C and 13°C.
Start of December
The month of December starts in West Coast with mild temps, averaging around 19°C during the day and nights around 12°C. There are plenty of days with a good chance of precipitation.
Mid December
By mid-December, daytime temps stay steady at around 19°C, with nights around 12°C. There’s a high chance of precipitation during this time.
End of December
By the end of December, the average daytime temperature in West Coast is around 20°C, while nighttime temps are about 12°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
In December, there is an average of 223 mm of precipitation, spread over 16 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
West Coast in December |
New York | ||
---|---|---|---|
![]() |
19°C | 9°C | |
![]() |
20°C | 12°C | |
![]() |
17°C | -5°C | |
![]() |
223 mm | 133 mm | |
![]() |
16 days | 17 days |
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is December a good time to visit West Coast?
Looking for sun? December isn’t a good month to be in West Coast. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 25°C in 2018, West Coast reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 13°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 18°C.
Check out the climate of West Coast for all months and discover the best travel time
Daily Temperature in December in West Coast
This chart shows the average daily high and low temperatures in December for West Coast, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in West Coast
The chart below shows the average daily precipitation in December for West Coast, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed 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 it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 16 days of precipitation in West Coast.
Daily UV index in December in West Coast
This chart shows the average daily UV index in December in West Coast, 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 West Coast over the years
This chart shows the average temperature in December in West Coast, measured in degrees Celsius, over the past few years.
Total precipitation in December in West Coast over the years
This chart shows the average precipitation in December in West Coast, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in December for West Coast
Click on any day in December to get detailed info about the usual weather on that day in West Coast. Check out the historical temperatures and precipitation over the past 10 years on this day.































Weather experiences in December in West Coast
Have you been to West Coast in December?
Share your weather experience in December in West Coast.
Average weather in West Coast by month
Click on a month below to see detailed weather info for West Coast. 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 West Coast for all months at once