Average Weather in May in Cabo Rojo Puerto Rico
Daily high temperatures are around 86°F, rarely falling below 83°F or exceeding 89°F.
Daily low temperatures are around 74°F, rarely falling below 71°F or exceeding 77°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 May
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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 May
The month of May in Cabo Rojo experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 47% to 74%. The highest chance of overcast or mostly cloudy conditions is 74% on May 30.
The clearest day of the month is May 1, with clear, mostly clear, or partly cloudy conditions 53% 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 May
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 May is essentially constant, remaining around 34% throughout.
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 May
The average sliding 31-day rainfall during May in Cabo Rojo is essentially constant, remaining about 2.7 inches throughout, and rarely exceeding 7.0 inches or falling below 0.4 inches.
The highest average 31-day accumulation is 3.0 inches on May 16.
Average Monthly Rainfall in May
Over the course of May 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 20 minutes, implying an average daily increase of 40 seconds, and weekly increase of 4 minutes, 43 seconds.
The shortest day of the month is May 1, with 12 hours, 48 minutes of daylight and the longest day is May 31, with 13 hours, 8 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Cabo Rojo is 6:01 AM on May 1 and the earliest sunrise is 9 minutes earlier at 5:52 AM on May 31.
The earliest sunset is 6:49 PM on May 1 and the latest sunset is 11 minutes later at 7:00 PM on May 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 May
The figure below presents a compact representation of key lunar data for May 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 May
The chance that a given day will be muggy in Cabo Rojo is gradually increasing during May, rising from 97% to 100% 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 May
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 May, remaining within 0.3 miles per hour of 10.7 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.
The lowest daily average wind speed during May is 10.4 miles per hour on May 5.
Average Wind Speed in May
The hourly average wind direction in Cabo Rojo throughout May is predominantly from the east, with a peak proportion of 88% on May 31.
Wind Direction in May
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 May, remaining within 1°F of 82°F throughout.
Average Water Temperature in May
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 May
The average accumulated growing degree days in Cabo Rojo are rapidly increasing during May, increasing by 889°F, from 3,200°F to 4,090°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Cabo Rojo is decreasing during May, falling by 1.2 kWh, from 6.7 kWh to 5.5 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
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 .