Average Weather in January in Cabo Rojo Puerto Rico
Daily high temperatures are around 83°F, rarely falling below 81°F or exceeding 86°F.
Daily low temperatures are around 70°F, rarely falling below 67°F or exceeding 73°F.
For reference, on August 5, the hottest day of the year, temperatures in Cabo Rojo typically range from 76°F to 88°F, while on January 30, the coldest day of the year, they range from 70°F to 83°F.
Average High and Low Temperature in January
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.
Average Hourly Temperature in January
The month of January in Cabo Rojo experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 20% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 19% on January 13.
The clearest day of the month is January 13, with clear, mostly clear, or partly cloudy conditions 81% of the time.
For reference, on May 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 74%, while on January 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 81%.
Cloud Cover Categories in January
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Cabo Rojo, the chance of a wet day over the course of January is gradually decreasing, starting the month at 18% and ending it at 14%.
For reference, the year's highest daily chance of a wet day is 40% on November 1, and its lowest chance is 12% on March 9.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Cabo Rojo is gradually decreasing, starting the month at 1.2 inches, when it rarely exceeds 2.4 inches or falls below 0.2 inches, and ending the month at 0.8 inches, when it rarely exceeds 1.9 inches.
Average Monthly Rainfall in January
Over the course of January in Cabo Rojo, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 17 minutes, implying an average daily increase of 33 seconds, and weekly increase of 3 minutes, 54 seconds.
The shortest day of the month is January 1, with 11 hours, 4 minutes of daylight and the longest day is January 31, with 11 hours, 21 minutes of daylight.
Hours of Daylight and Twilight in January
The earliest sunrise of the month in Cabo Rojo is 7:00 AM on January 1 and the latest sunrise is 3 minutes later at 7:03 AM on January 19.
The earliest sunset is 6:04 PM on January 1 and the latest sunset is 18 minutes later at 6:22 PM on January 31.
Daylight saving time is not observed in Cabo Rojo during 2021.
For reference, on June 21, the longest day of the year, the Sun rises at 5:53 AM and sets 13 hours, 13 minutes later, at 7:06 PM, while on December 21, the shortest day of the year, it rises at 6:55 AM and sets 11 hours, 3 minutes later, at 5:58 PM.
Sunrise & Sunset with Twilight in January
The figure below presents a compact representation of key lunar data for January 2021. 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.
Moon Rise, Set & Phases in January
The chance that a given day will be muggy in Cabo Rojo is decreasing during January, falling from 89% to 83% over the course of the month.
For reference, on June 24, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 28, the least muggy day of the year, there are muggy conditions 78% of the time.
Humidity Comfort Levels in January
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Cabo Rojo is essentially constant during January, remaining within 0.2 miles per hour of 12.1 miles per hour throughout.
For reference, on July 13, the windiest day of the year, the daily average wind speed is 12.6 miles per hour, while on October 10, the calmest day of the year, the daily average wind speed is 9.4 miles per hour.
Average Wind Speed in January
The hourly average wind direction in Cabo Rojo throughout January is predominantly from the east, with a peak proportion of 87% on January 16.
Wind Direction in January
Cabo Rojo 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 Cabo Rojo is essentially constant during January, remaining around 80°F throughout.
Average Water Temperature in January
Temperatures in Cabo Rojo 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.
Time Spent in Various Temperature Bands and the Growing Season in January
The average accumulated growing degree days in Cabo Rojo are rapidly increasing during January, increasing by 786°F, from 1°F to 787°F, over the course of the month.
Growing Degree Days in January
The average daily incident shortwave solar energy in Cabo Rojo is gradually increasing during January, rising by 0.7 kWh, from 5.0 kWh to 5.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January
For the purposes of this report, the geographical coordinates of Cabo Rojo are 18.087 deg latitude, -67.146 deg longitude, and 89 ft elevation.
The topography within 2 miles of Cabo Rojo contains significant variations in elevation, with a maximum elevation change of 781 feet and an average elevation above sea level of 143 feet. Within 10 miles contains significant variations in elevation (2,077 feet). Within 50 miles contains large variations in elevation (4,442 feet).
The area within 2 miles of Cabo Rojo is covered by trees (32%), grassland (28%), cropland (23%), and shrubs (17%), within 10 miles by water (40%) and trees (23%), and within 50 miles by water (81%) and trees (10%).
This report illustrates the typical weather in Cabo Rojo, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Cabo Rojo.
For each station, the records are corrected for the elevation difference between that station and Cabo Rojo according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Cabo Rojo is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cabo Rojo and a given station.
Time zones for airports and weather stations are provided by AskGeo.com .