December weather forecast and climate
Port Hueneme, CA

Weather in December

December, the first month of the winter, in Port Hueneme, is also a moderate month, with average temperature fluctuating between 59.9°F (15.5°C) and 50.5°F (10.3°C).

Temperature

In December, the average high-temperature slightly decreases, from a comfortable 65.3°F (18.5°C) in November, to a moderate 59.9°F (15.5°C). The average low-temperature, in December, is 50.5°F (10.3°C).

Humidity

In December, the average relative humidity is 59%.

Rainfall

In Port Hueneme, during December, the rain falls for 5.3 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Port Hueneme, during the entire year, the rain falls for 46.5 days and collects up to 8.31" (211mm) of precipitation.

Ocean temperature

In Port Hueneme, in December, the average water temperature is 58.8°F (14.9°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

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

Sunshine

In Port Hueneme, the average sunshine is 6.9h.

UV index

Months with the lowest UV index are January through April, November and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in December in Port Hueneme?

The average high-temperature, in December, in Port Hueneme, is 59.9°F (15.5°C), while the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in December in Port Hueneme?

In December, the average relative humidity in Port Hueneme, California, is 59%.

How much does it rain in Port Hueneme in December?

In December, the rain falls for 5.3 days. Throughout December, 1.3" (33mm) of precipitation is accumulated.

What is the water temperature in December in Port Hueneme?

In December, the average ocean temperature in Port Hueneme is 58.8°F (14.9°C). Swimming in 58.8°F (14.9°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Port Hueneme?

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

How many hours of daylight does Port Hueneme have in December?

In December, the average length of the day in Port Hueneme, California, is 9.9h.

How long on average sun shines in December in Port Hueneme?

The average sunshine in December is 6.9h.

What is the month with the lowest UV index in Port Hueneme?

January through April, November and December, with an average maximum UV index of 4, are months with the lowest UV index.

What is the UV index intensity in December in Port Hueneme?

In December, the average daily maximum UV index in Port Hueneme is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in December
Port Hueneme, CA

Average temperature in December - Port Hueneme, CA
  • Average high temperature in December: 59.9°F

The warmest months (with the highest average high temperature) are August and September (73.4°F).
The month with the lowest average high temperature is February (59°F).

  • Average low temperature in December: 50.5°F

The month with the highest average low temperature is September (63°F).
The coldest months (with the lowest average low temperature) are February and December (50.5°F).

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Average pressure in December
Port Hueneme, CA

Average pressure in December - Port Hueneme, CA
  • Average pressure in December: 30.08"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is September (29.9").

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Average wind speed in December
Port Hueneme, CA

Average wind speed in December - Port Hueneme, CA
  • Average wind speed in December: 6.7mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in December
Port Hueneme, CA

Average humidity in December - Port Hueneme, CA
  • Average humidity in December: 59%

The month with the highest relative humidity is June (72%).
The month with the lowest relative humidity is November (57%).

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Average rainfall in December
Port Hueneme, CA

Average rainfall in December - Port Hueneme, CA
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is January (1.85").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Port Hueneme, CA

Average rainfall days in December - Port Hueneme, CA
  • Average rainfall days in December: 5.3 days

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is August (1.3 days).

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Average sea temperature in December
Port Hueneme, CA

Average sea temperature in December - Port Hueneme, CA
  • Average sea temperature in December: 58.9°F

The best month for swimming (with the highest average sea temperature) is August (64.1°F).
The coldest month (with the lowest average sea temperature) is April (56.7°F).

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Average daylight in December /
Average sunshine in December
Port Hueneme, CA

Average daylight in December / Average sunshine in December - Port Hueneme, 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: 6.9h

Months with the most sunshine are June, July and August (Average sunshine: 12h).
Months with the least sunshine are January and February (Average sunshine: 6.8).

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Average sunshine days in December
Port Hueneme, CA

Average sunshine days in December - Port Hueneme, CA
  • Average sunshine days in December: 24.9 days

The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is February (21.7 days).

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Average UV index in December
Port Hueneme, CA

Average UV index in December - Port Hueneme, CA
  • Average UV index in December: 4

The month with the highest UV index is August (UV index 6).
Months with the lowest UV index are January, February, March, April, November and December (UV index 4).

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Average cloud cover in December
Port Hueneme, CA

Average cloud cover in December - Port Hueneme, CA
  • Average cloud cover in December: 21

The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
Port Hueneme, CA

Average visibility in December - Port Hueneme, CA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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