January weather forecast and climate
Newport Beach, CA

The stunning coastal village of Corona Del Mar, in Newport Beach, California
The stunning coastal village of Corona Del Mar, in Newport Beach, California

Weather in January

January, like December, in Newport Beach, California, is another comfortable winter month, with average temperature varying between 64.4°F (18°C) and 53.6°F (12°C).

Temperature

In Newport Beach, the average high-temperature is practically the same as in December - a still comfortable 64.4°F (18°C). In January, the average low-temperature is 53.6°F (12°C).

Humidity

The average relative humidity in January is 60%.

Rainfall

In January, the rain falls for 4.2 days. Throughout January, 0.39" (10mm) of precipitation is accumulated. Throughout the year, in Newport Beach, there are 50.7 rainfall days, and 3.74" (95mm) of precipitation is accumulated.

Ocean temperature

With an average ocean temperature of 58.5°F (14.7°C), January is the month with the coldest seawater.
Note: Swimming in 58.5°F (14.7°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.

Daylight

The average length of the day in Newport Beach is 10.2h.

Sunshine

In January, the average sunshine in Newport Beach is 6.7h.

UV index

Months with the lowest UV index in Newport Beach 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 vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 4 in January interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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 January in Newport Beach?

In January, in Newport Beach, California, the average high-temperature is 64.4°F (18°C), and the average low-temperature is 53.6°F (12°C).

What is the average humidity in January in Newport Beach?

The average relative humidity in January is 60%.

How much does it rain in Newport Beach in January?

In Newport Beach, California, in January, during 4.2 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

What is the month with the coldest ocean in Newport Beach?

With an average ocean temperature of 58.5°F (14.7°C), January is the month with the coldest seawater in Newport Beach.

How cold is the water in January in Newport Beach?

In Newport Beach, California, in January, the average water temperature is 58.5°F (14.7°C). Swimming in 58.5°F (14.7°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.

How many hours of daylight does Newport Beach have in January?

The average length of the day in January in Newport Beach is 10.2h.

How long on average sun shines in January in Newport Beach?

In January, the average sunshine in Newport Beach, California, is 6.7h.

When is the lowest UV index in Newport Beach?

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

How high is the UV index in January in Newport Beach?

In January, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in January
Newport Beach, CA

Average temperature in January - Newport Beach, CA
  • Average high temperature in January: 64.4°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 January: 53.6°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).

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Average pressure in January
Newport Beach, CA

Average pressure in January - Newport Beach, CA
  • Average pressure in January: 30.1"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.89").

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Average wind speed in January
Newport Beach, CA

Average wind speed in January - Newport Beach, CA
  • Average wind speed in January: 5.5mph

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).

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Average humidity in January
Newport Beach, CA

Average humidity in January - Newport Beach, CA
  • Average humidity in January: 60%

The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).

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Average rainfall in January
Newport Beach, CA

Average rainfall in January - Newport Beach, CA
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is December (0.79").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in January
Newport Beach, CA

Average rainfall days in January - Newport Beach, CA
  • Average rainfall days in January: 4.2 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).

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Average sea temperature in January
Newport Beach, CA

Average sea temperature in January - Newport Beach, CA
  • Average sea temperature in January: 58.5°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).

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Average daylight in January /
Average sunshine in January
Newport Beach, CA

Average daylight in January / Average sunshine in January - Newport Beach, CA
  • Average daylight in January: 10.2h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in January: 6.7h

The month with the most sunshine is August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in January
Newport Beach, CA

Average sunshine days in January - Newport Beach, CA
  • Average sunshine days in January: 25.8 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).

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Average UV index in January
Newport Beach, CA

Average UV index in January - Newport Beach, CA
  • Average UV index in January: 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).

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Average cloud cover in January
Newport Beach, CA

Average cloud cover in January - Newport Beach, CA
  • Average cloud cover in January: 22

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).

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Average visibility in January
Newport Beach, CA

Average visibility in January - Newport Beach, CA
  • Average visibility in January: 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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