January Weather in Valparaíso Chile

Daily high temperatures are around 68°F, rarely falling below 63°F or exceeding 73°F.

Daily low temperatures are around 54°F, rarely falling below 50°F or exceeding 58°F. The highest daily average low temperature is 54°F on January 13.

For reference, on February 8, the hottest day of the year, temperatures in Valparaíso typically range from 53°F to 68°F, while on July 26, the coldest day of the year, they range from 45°F to 60°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.

Del Rey Oaks, United States (5,805 miles away) is the far-away foreign place with temperatures most similar to Valparaíso (view comparison).

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The month of January in Valparaíso experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 8% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 7% on January 31.

The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 93% of the time.

For reference, on May 31, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on January 31, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 93%.

Over the course of January in Valparaíso, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 35 minutes, implying an average daily decrease of 1 minute, 10 seconds, and weekly decrease of 8 minutes, 9 seconds.

The shortest day of the month is January 31, with 13 hours, 43 minutes of daylight and the longest day is January 1, with 14 hours, 18 minutes of daylight.

The earliest sunrise of the month in Valparaíso is 6:41 AM on January 1 and the latest sunrise is 27 minutes later at 7:08 AM on January 31.

The latest sunset is 8:59 PM on January 7 and the earliest sunset is 8 minutes earlier at 8:50 PM on January 31.

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

For reference, on December 21, the longest day of the year, the Sun rises at 6:34 AM and sets 14 hours, 20 minutes later, at 8:55 PM, while on June 20, the shortest day of the year, it rises at 7:49 AM and sets 9 hours, 58 minutes later, at 5:47 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 Valparaíso is essentially constant during January, remaining within 1% of 3% throughout.

For reference, on February 3, the muggiest day of the year, there are muggy conditions 4% of the time, while on July 25, 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 Valparaíso is gradually decreasing during January, decreasing from 10.6 miles per hour to 10.1 miles per hour over the course of the month.

For reference, on December 4, the windiest day of the year, the daily average wind speed is 11.1 miles per hour, while on May 20, the calmest day of the year, the daily average wind speed is 8.6 miles per hour.

The hourly average wind direction in Valparaíso throughout January is predominantly from the south, with a peak proportion of 63% on January 1.

Valparaíso 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 Valparaíso is essentially constant during January, remaining within 1°F of 62°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 Valparaíso 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 Valparaíso are increasing during January, increasing by 343°F, from 1,102°F to 1,444°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 Valparaíso is gradually decreasing during January, falling by 0.5 kWh, from 9.1 kWh to 8.6 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Valparaíso are -33.039 deg latitude, -71.627 deg longitude, and 75 ft elevation.

The topography within 2 miles of Valparaíso contains very significant variations in elevation, with a maximum elevation change of 1,467 feet and an average elevation above sea level of 329 feet. Within 10 miles also contains very significant variations in elevation (1,936 feet). Within 50 miles contains very significant variations in elevation (7,700 feet).

The area within 2 miles of Valparaíso is covered by water (35%), shrubs (19%), trees (18%), and grassland (13%), within 10 miles by water (58%) and shrubs (20%), and within 50 miles by water (60%) and shrubs (20%).