January weather forecast
Newport Beach, CA

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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

With relatively mild temperatures, January in Newport Beach, California, ushers in the New Year with its own unique style. This month experiences a high of 64.4°F (18°C) and a low of 53.6°F (12°C) while basking in approximately 6.7 hours of sunshine every day. Rainfall, though not prolific, does make its appearance with about 4.2 days recorded on average. A light breeze is persistent, making it a calming time of year. Overall, the weather tends to be milder compared to the frosty conditions encountered in many other regions during this time.

Temperature

The average high-temperature in Newport Beach, California, is a still refreshing 64.4°F (18°C) in January, hardly different from the 62.4°F (16.9°C) recorded in December. Newport Beach in January anticipates an average nighttime temperature of 53.6°F (12°C).

Humidity

The average relative humidity in January in Newport Beach is 60%.

Rainfall

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

Ocean temperature

The month with the coldest seawater in Newport Beach, California, is January, with an average ocean temperature of 58.5°F (14.7°C).
Note: Swimming at temperatures less than 50°F (10°C) in 58.5°F (14.7°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.

Daylight

In January, the average length of the day in Newport Beach, California, is 10h and 13min.
On the first day of January, sunrise is at 6:56 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 5:21 pm PST.

Sunshine

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

UV index

The 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 UV radiation for the ordinary person.
Note: The maximum daily UV index, 4 in January, converts into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

What are January temperatures in Newport Beach?

During January, Newport Beach experiences an average high-temperature of 64.4°F (18°C) and a low-temperature of 53.6°F (12°C).

What is the average humidity in January in Newport Beach?

In January, the average relative humidity in Newport Beach is 60%.

How much does it rain in Newport Beach in January?

In January, in Newport Beach, the rain falls for 4.2 days. Throughout January, 0.39" (10mm) of precipitation is accumulated.

What month is the ocean coldest in Newport Beach?

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

How cold is the water in January in Newport Beach?

In January, the average ocean temperature in Newport Beach, California, 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.

What is the average length of the day in January in Newport Beach?

In Newport Beach, the average day length in January is 10h and 13min.

When are sunrise and sunset in January in Newport Beach?

On the first day of January in Newport Beach, sunrise is at 6:56 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 5:21 pm PST.

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

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

What is the month with 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.

What is the UV index reading in January in Newport Beach?

The average daily maximum UV index in January in Newport Beach, California, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 6h and 4min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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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

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).

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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

The 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

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).

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Newport Beach, California, USA

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