Redondo Beach
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Redondo Beach, CA

December, the first month of the winter, in Redondo Beach, is still a comfortable month, with average temperature ranging between min 52.7°F (11.5°C) and max 62.8°F (17.1°C).

Temperature

With an average high-temperature of 62.8°F (17.1°C) and an average low-temperature of 52.7°F (11.5°C), December is the coldest month.

Humidity

In Redondo Beach, the average relative humidity in December is 59%.

Rainfall

In Redondo Beach, during 5.7 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. In Redondo Beach, California, during the entire year, the rain falls for 54.5 days and collects up to 7.91" (201mm) of precipitation.

Ocean temperature

In Redondo Beach, the average seawater temperature in December is 60.4°F (15.8°C).
Note: Swimming in 60.4°F (15.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

The month with the shortest days in Redondo Beach, California, is December, with an average of 9.9h of daylight.

Sunshine

With an average of 6.6h of sunshine, December has the least sunshine of the year.

UV index

Months with the lowest UV index in Redondo Beach are January through March, November and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the coldest month in Redondo Beach?

The coldest month in Redondo Beach is December, with an average high-temperature of 62.8°F (17.1°C) and an average low-temperature of 52.7°F (11.5°C).

What is the temperature in December in Redondo Beach?

In Redondo Beach, California, in December, the average high-temperature is 62.8°F (17.1°C), and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in December in Redondo Beach?

In December, the average relative humidity in Redondo Beach is 59%.

How many days does it rain in December in Redondo Beach?

In December, in Redondo Beach, California, the rain falls for 5.7 days. Throughout December, 1.42" (36mm) of precipitation is accumulated.

What is the ocean temperature in December in Redondo Beach?

In Redondo Beach, California, in December, the average water temperature is 60.4°F (15.8°C). For swimming, a surface water temperature of 60.4°F (15.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days in Redondo Beach?

December has the shortest days of the year, with an average of 9.9h of daylight.

What is the average length of the day in December in Redondo Beach?

In December, the average length of the day is 9.9h.

What is the month with the least sunshine in Redondo Beach?

The month with the least sunshine in Redondo Beach, California, is December, with an average of 6.6h of sunshine.

How long on average sun shines in December in Redondo Beach?

In Redondo Beach, the average sunshine in December is 6.6h.

What are the months with the lowest UV index in Redondo Beach?

Months with the lowest UV index in Redondo Beach are January through March, November and December, with an average maximum UV index of 4.

What is the UV index intensity in December in Redondo Beach?

In December, the average daily maximum UV index in Redondo Beach, California, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.
Average temperature in December - Redondo 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

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 humidity in December - Redondo 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 - Redondo 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 - Redondo 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 sea temperature in December - Redondo Beach, CA
  • Average sea temperature in December: 60.4°F

The best months for swimming (with the highest average sea temperature) are July and August (67.9°F).
The coldest month (with the lowest average sea temperature) is January (58.3°F).

Average daylight in December / Average sunshine in December - Redondo Beach, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.6h

The month with the most sunshine is August (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 6.6h).

Average UV index in December - Redondo Beach, CA
  • Average UV index in December: 4

Months with the highest UV index are July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).