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

January weather forecast and climate
Long Beach, CA

A stunning shot of a colorful sunset sky over the Pacific Ocean in Long Beach, California, and views of distant city buildings, calm water, and soft sand
A stunning shot of a colorful sunset sky over the Pacific Ocean in Long Beach, California, and views of distant city buildings, calm water, and soft sand
January, the same as December, is another comfortable winter month in Long Beach, California, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 67.5°F (19.7°C).

Temperature

In January, the average high-temperature is almost the same as in December - a still enjoyable 67.5°F (19.7°C). In Long Beach, in January, the average low-temperature is 46°F (7.8°C).

Humidity

With an average relative humidity of 64.7%, January is the least humid month.

Rainfall

January is the month with the most rainfall. Rain falls for 5.9 days and accumulates 2.3" (59mm) of precipitation.

Ocean temperature

With an average ocean temperature of 58.3°F (14.6°C), January is the month with the coldest seawater.
Note: Swimming in 58.3°F (14.6°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In January, the average length of the day is 10.2h.

Sunshine

Months with the least sunshine are January, November and December, with an average of 7h of sunshine.

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the average person.
Note: In January, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. 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 temperature in January in Long Beach?

The average high-temperature, in January, in Long Beach, California, is 67.5°F (19.7°C), while the average low-temperature is 46°F (7.8°C).

What is the least humid month in Long Beach?

January is the least humid month, with an average relative humidity of 64.7%.

What is the average humidity in January in Long Beach?

In Long Beach, California, the average relative humidity in January is 64.7%.

How much does it rain in Long Beach in January?

In Long Beach, in January, it is raining for 5.9 days, with typically 2.3" (59mm) of accumulated precipitation.

What is the wettest month in Long Beach?

January is the month with the most rainfall in Long Beach, California. Rain falls for 5.9 days and accumulates 2.3" (59mm) of precipitation.

When is the ocean coldest in Long Beach?

With an average ocean temperature of 58.3°F (14.6°C), January is the month with the coldest seawater.

What is the ocean temperature in January in Long Beach?

In Long Beach, California, in January, the average water temperature is 58.3°F (14.6°C). Swimming in 58.3°F (14.6°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 Long Beach?

In Long Beach, California, the average length of the day in January is 10.2h.

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

Months with the least sunshine are January, November and December, with an average of 7h of sunshine.

How many hours of sunshine does Long Beach have in January?

The average sunshine in January is 7h.

What is the month with the lowest UV index in Long Beach?

January and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the UV index intensity in January in Long Beach?

In January, the average daily maximum UV index in Long Beach, California, is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.
Average temperature in January - Long Beach, CA
  • Average high temperature in January: 67.4°F

The warmest month (with the highest average high temperature) is August (83.8°F).
The month with the lowest average high temperature is December (66.8°F).

  • Average low temperature in January: 46.1°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (45.8°F).

Average humidity in January - Long Beach, CA
  • Average humidity in January: 64.7%

The month with the highest relative humidity is June (69.6%).
The month with the lowest relative humidity is January (64.7%).

Average rainfall in January - Long Beach, CA
  • Average rainfall in January: 2.3"

The wettest month (with the highest rainfall) is January (2.3").
Driest months (with the lowest rainfall) are June, July and August (0").

Average rainfall days in January - Long Beach, CA
  • Average rainfall days in January: 5.9 days

The month with the highest number of rainy days is February (6.5 days).
The month with the lowest number of rainy days is August (0.3 days).

Average sea temperature in January - Long Beach, CA
  • Average sea temperature in January: 58.3°F

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

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

  • Average sunshine in January: 7h

Months with most sunshine are July and August (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index in January - Long Beach, CA
  • Average UV index in January: 3

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).