January Weather in Cayucos United States

Daily high temperatures are around 61°F, rarely falling below 55°F or exceeding 70°F.

Daily low temperatures are around 44°F, rarely falling below 37°F or exceeding 53°F. The lowest daily average low temperature is 44°F on January 3.

For reference, on August 23, the hottest day of the year, temperatures in Cayucos typically range from 55°F to 74°F, while on January 3, the coldest day of the year, they range from 44°F to 61°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Ovalle, Chile (5,595 miles away) is the far-away foreign place with temperatures most similar to Cayucos (view comparison).

© OpenStreetMap contributors

Compare Cayucos to another city:

CompareMap

The month of January in Cayucos experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 44% throughout the month.

The clearest day of the month is January 27, with clear, mostly clear, or partly cloudy conditions 57% of the time.

For reference, on February 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 47%, while on August 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Cayucos, the chance of a wet day over the course of January is essentially constant, remaining around 20% throughout.

For reference, the year's highest daily chance of a wet day is 25% on February 20, and its lowest chance is 0% on July 28.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January in Cayucos is essentially constant, remaining about 2.6 inches throughout, and rarely exceeding 6.2 inches or falling below 0.1 inches.

Over the course of January in Cayucos, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 37 minutes, implying an average daily increase of 1 minute, 14 seconds, and weekly increase of 8 minutes, 41 seconds.

The shortest day of the month is January 1, with 9 hours, 49 minutes of daylight and the longest day is January 31, with 10 hours, 26 minutes of daylight.

The latest sunrise of the month in Cayucos is 7:13 AM on January 7 and the earliest sunrise is 9 minutes earlier at 7:04 AM on January 31.

The earliest sunset is 5:01 PM on January 1 and the latest sunset is 29 minutes later at 5:30 PM on January 31.

Daylight saving time is observed in Cayucos during 2024, but it neither starts nor ends during January, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:48 AM and sets 14 hours, 33 minutes later, at 8:22 PM, while on December 21, the shortest day of the year, it rises at 7:09 AM and sets 9 hours, 46 minutes later, at 4:54 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for January 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Cayucos is essentially constant during January, remaining around 0% throughout.

For reference, on July 5, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Cayucos is essentially constant during January, remaining within 0.1 miles per hour of 8.4 miles per hour throughout.

For reference, on May 23, the windiest day of the year, the daily average wind speed is 9.9 miles per hour, while on September 15, the calmest day of the year, the daily average wind speed is 7.5 miles per hour.

The lowest daily average wind speed during January is 8.2 miles per hour on January 17.

The hourly average wind direction in Cayucos throughout January is predominantly from the north, with a peak proportion of 41% on January 22.

Cayucos is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Cayucos is essentially constant during January, remaining around 56°F throughout.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Cayucos are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Cayucos are gradually increasing during January, increasing by 115°F, from 4°F to 119°F, over the course of the month.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Cayucos is gradually increasing during January, rising by 0.6 kWh, from 2.7 kWh to 3.3 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Cayucos are 35.443 deg latitude, -120.892 deg longitude, and 66 ft elevation.

The topography within 2 miles of Cayucos contains significant variations in elevation, with a maximum elevation change of 712 feet and an average elevation above sea level of 167 feet. Within 10 miles contains significant variations in elevation (2,569 feet). Within 50 miles contains large variations in elevation (4,314 feet).

The area within 2 miles of Cayucos is covered by water (46%) and grassland (41%), within 10 miles by grassland (43%) and water (34%), and within 50 miles by water (43%) and grassland (33%).