December weather forecastHermosa Beach, CA
December
Weather in December
December, the first month of the winter in Hermosa Beach, is still a refreshing month, with an average temperature fluctuating between 52.7°F (11.5°C) and 62.8°F (17.1°C).Temperature
The month of December, characterized by an average high of 62.8°F (17.1°C) and a low of 52.7°F (11.5°C), is recognized as the coldest.Humidity
In December, the average relative humidity is 59%.Rainfall
In Hermosa Beach, during December, the rain falls for 5.7 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Hermosa Beach, during the entire year, the rain falls for 54.5 days and collects up to 7.91" (201mm) of precipitation.Daylight
December has the shortest days of the year in Hermosa Beach, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:41 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:55 pm PST.
Sunshine
With an average of 6.6h of sunshine, December has the least sunshine of the year.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 in December translates into these instructions:
Ensure safety - Sun damage prevention is strongly urged. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hermosa Beach, CA
- Average high temperature in December: 62.8°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 (62.8°F).
- Average low temperature in December: 52.7°F
The months with the highest average low temperature are August and September (64.2°F).
The coldest month (with the lowest average low temperature) is February (52.2°F).
Average pressure in December
Hermosa 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 (29.9"Hg).
Average wind speed in December
Hermosa Beach, CA
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in December
Hermosa Beach, CA
- Average humidity in December: 59%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (57%).
Average rainfall in December
Hermosa Beach, CA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in December
Hermosa Beach, CA
- Average rainfall days in December: 5.7 days
The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (3 days).
Average daylight in December /
Average sunshine in December
Hermosa Beach, CA
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 36min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Hermosa Beach, CA
- Average sunshine days in December: 23.5 days
The months with the most sunshine days are January and October (24.9 days).
The month with the least sunshine days is June (19.6 days).
Average UV index in December
Hermosa 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
Hermosa Beach, CA
- Average cloud cover in December: 23
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Hermosa 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).
