December weather forecastNewport Beach, CA
December
Weather in December
December concludes the year in Newport Beach with cooler temperatures and the onset of seasonal festivities. The mercury dips to its annual low, with temperatures ranging between 62.4°F (16.9°C) and 53.1°F (11.7°C). It's the time of year when rainfall reaches its annual peak, totaling up to 0.79" (20mm). Despite the increased number of rainy days, the city of Newport Beach retains its charm, beautifully adorned for the holiday season. The changing weather pattern ushers in cheer, reflecting the vibrant spirit of the holidays.Temperature
Newport Beach's coldest month, December, generally records average temperatures ranging from a high of 62.4°F (16.9°C) to a low of 53.1°F (11.7°C).Humidity
The average relative humidity in December is 61%.Rainfall
December is the month with the most rainfall in Newport Beach. Rain falls for 6.2 days and accumulates 0.79" (20mm) of precipitation.Ocean temperature
In Newport Beach, in December, the average water temperature is 60.3°F (15.7°C).Note: In 60.3°F (15.7°C), swimming is not an enjoyable activity for most. As the temperature decreases from 69.8°F (21°C) to 59°F (15°C), it becomes harder to control breathing.
Daylight
The month with the shortest days in Newport Beach is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:38 am and sunset at 4:43 pm. On the last day of December, sunrise is at 6:56 am and sunset at 4:54 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6.6h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 4 during December translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Newport Beach, CA
- Average high temperature in December: 62.4°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in December: 53.1°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (52.3°F).
Average pressure in December
Newport Beach, CA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in December
Newport Beach, CA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).
Average humidity in December
Newport Beach, CA
- Average humidity in December: 61%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).
Average rainfall in December
Newport Beach, CA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is December (0.79").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Newport Beach, CA
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1.6 days).
Average sea temperature in December
Newport Beach, CA
- Average sea temperature in December: 60.3°F
The best months for swimming (with the highest average sea temperature) are July and August (67.7°F).
The coldest month (with the lowest average sea temperature) is January (58.5°F).
Average daylight in December /
Average sunshine in December
Newport Beach, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 36min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Newport Beach, CA
- Average sunshine days in December: 23.6 days
The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in December
Newport Beach, CA
- Average UV index in December: 4
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in December
Newport Beach, CA
- Average cloud cover in December: 24
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in December
Newport Beach, CA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
