January weather forecast
Shell Beach, CA

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Weather in January

January, the same as December, is another refreshing winter month in Shell Beach, California, with temperature in the range of an average high of 63°F (17.2°C) and an average low of 47.5°F (8.6°C).

Temperature

The shift into January finds Shell Beach at an average high-temperature of a still comfortable 63°F (17.2°C), closely comparable to December's conditions. Throughout the month of January, Shell Beach expects an average low of 47.5°F (8.6°C).

Humidity

In Shell Beach, the average relative humidity in January is 63%.

Rainfall

In Shell Beach, in January, during 5.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 47.6 rainfall days, and 6.93" (176mm) of precipitation is accumulated.

Daylight

In January, the average length of the day is 10h and 7min.
On the first day of the month, sunrise is at 7:10 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:02 am and sunset at 5:29 pm PST.

Sunshine

The average sunshine in January is 6.8h.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, a daily maximum UV index of 4 leads to the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average January temperature?

January temperatures vary between a high-temperature of 63°F (17.2°C) and a low-temperature of 47.5°F (8.6°C).

What is the average humidity in January?

In January, the average relative humidity in Shell Beach is 63%.

How many days does it rain in January?

In Shell Beach, in January, during 5.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

What is the average length of the day in January?

In January, the average day length is 10h and 7min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:10 am and sunset at 5:01 pm. On the last day of the month, in Shell Beach, sunrise is at 7:02 am and sunset at 5:29 pm PST.

How long on average sun shines in January?

In Shell Beach, the average sunshine duration in January is 6.8h.

When is the lowest UV index?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Shell Beach, CA

Average temperature in January - Shell Beach, CA
  • Average high temperature in January: 63°F

The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).

  • Average low temperature in January: 47.5°F

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).

Average pressure in January
Shell Beach, CA

Average pressure in January - Shell Beach, CA
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

Average wind speed in January
Shell Beach, CA

Average wind speed in January - Shell Beach, CA
  • Average wind speed in January: 6.2mph

The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in January
Shell Beach, CA

Average humidity in January - Shell Beach, CA
  • Average humidity in January: 63%

The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).

Average rainfall in January
Shell Beach, CA

Average rainfall in January - Shell Beach, CA
  • Average rainfall in January: 1.22"

The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").

Average rainfall days in January
Shell Beach, CA

Average rainfall days in January - Shell Beach, CA
  • Average rainfall days in January: 5.5 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).

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

Average daylight in January / Average sunshine in January - Shell Beach, CA
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in January: 6h and 5min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).

Average sunshine days in January
Shell Beach, CA

Average sunshine days in January - Shell Beach, CA
  • Average sunshine days in January: 24.3 days

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).

Average UV index in January
Shell Beach, CA

Average UV index in January - Shell Beach, CA
  • Average UV index in January: 4

The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

Average cloud cover in January
Shell Beach, CA

Average cloud cover in January - Shell Beach, CA
  • Average cloud cover in January: 23

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).

Average visibility in January
Shell Beach, CA

Average visibility in January - Shell 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).

Shell Beach, California, USA

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