December weather forecastImperial Beach, CA
December
Weather in December
December, the first month of the winter in Imperial Beach, is also an enjoyable month, with an average temperature fluctuating between 63.5°F (17.5°C) and 52.7°F (11.5°C).Temperature
December is Imperial Beach's coldest month, registering average high temperatures of 63.5°F (17.5°C) and lows of 52.7°F (11.5°C).Humidity
In December, the average relative humidity is 62%.Rainfall
December is the month with the most rainfall. Rain falls for 6.6 days and accumulates 1.42" (36mm) of precipitation.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:33 am and sunset at 4:42 pm. On the last day of December, sunrise is at 6:50 am and sunset at 4:53 pm PST.
Sunshine
With an average of 6.6h of sunshine, December has the least sunshine of the year in Imperial Beach.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 reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a regular UV index of 4 translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Imperial Beach, CA
- Average high temperature in December: 63.5°F
The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (63.5°F).
- Average low temperature in December: 52.7°F
The month with the highest average low temperature is August (66.6°F).
The coldest month (with the lowest average low temperature) is February (52°F).
Average pressure in December
Imperial Beach, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in December
Imperial Beach, CA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is October (5.3mph).
Average humidity in December
Imperial Beach, CA
- Average humidity in December: 62%
The month with the highest relative humidity is June (73%).
The months with the lowest relative humidity are January and November (60%).
Average rainfall in December
Imperial Beach, CA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in December
Imperial Beach, CA
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (2.5 days).
Average daylight in December /
Average sunshine in December
Imperial Beach, CA
- Average daylight in December: 10h and 6min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 6h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Imperial Beach, CA
- Average sunshine days in December: 22.6 days
The month with the most sunshine days is June (26 days).
The month with the least sunshine days is February (20.3 days).
Average UV index in December
Imperial 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
Imperial Beach, CA
- Average cloud cover in December: 25
The months with the most cloud cover are May and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Imperial 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).
