10 puerto rico weather in october Ideas

Daily high temperatures are around 87°F, rarely falling below 84°F or exceeding 91°F.

Daily low temperatures are around 77°F, rarely falling below 74°F or exceeding 80°F.

For reference, on August 25, the hottest day of the year, temperatures in Puerto Rico typically range from 78°F to 88°F, while on January 24, the coldest day of the year, they range from 72°F to 82°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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.

The month of October in Puerto Rico experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 68% to 59%.

The clearest day of the month is October 31, with clear, mostly clear, or partly cloudy conditions 41% 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 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 82%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Puerto Rico, the chance of a wet day over the course of October is essentially constant, remaining around 46% throughout.

For reference, the year’s highest daily chance of a wet day is 50% on September 26, and its lowest chance is 20% on January 17.

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 October in Puerto Rico is essentially constant, remaining about 4.4 inches throughout, and rarely exceeding 8.6 inches or falling below 1.0 inches.

Over the course of October in Puerto Rico, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 29 minutes, implying an average daily decrease of 58 seconds, and weekly decrease of 6 minutes, 48 seconds.

The shortest day of the month is October 31, with 11 hours, 29 minutes of daylight and the longest day is October 1, with 11 hours, 58 minutes of daylight.

The earliest sunrise of the month in Puerto Rico is 6:16 AM on October 1 and the latest sunrise is 9 minutes later at 6:25 AM on October 31.

The latest sunset is 6:14 PM on October 1 and the earliest sunset is 21 minutes earlier at 5:53 PM on October 31.

Daylight saving time is not observed in Puerto Rico during 2022.

For reference, on June 21, the longest day of the year, the Sun rises at 5:51 AM and sets 13 hours, 14 minutes later, at 7:04 PM, while on December 21, the shortest day of the year, it rises at 6:53 AM and sets 11 hours, 2 minutes later, at 5:55 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 October 2022. 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 Puerto Rico is essentially constant during October, remaining around 100% throughout.

For reference, on June 12, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 9, the least muggy day of the year, there are muggy conditions 81% 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 Puerto Rico is essentially constant during October, remaining within 0.2 miles per hour of 9.6 miles per hour throughout.

For reference, on July 14, 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 October is 9.4 miles per hour on October 11.

The hourly average wind direction in Puerto Rico throughout October is predominantly from the east, with a peak proportion of 83% on October 1.

Puerto Rico 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 Puerto Rico is essentially constant during October, remaining around 84°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 Puerto Rico 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 Puerto Rico are very rapidly increasing during October, increasing by 936°F, from 8,186°F to 9,122°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 Puerto Rico is essentially constant during October, remaining within 0.1 kWh of 4.7 kWh throughout.

For the purposes of this report, the geographical coordinates of Puerto Rico are 18.248 deg latitude, -66.500 deg longitude, and 0 ft elevation.

The topography within 2 miles of Puerto Rico is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Puerto Rico is covered by trees (92%), within 10 miles by trees (74%), and within 50 miles by water (65%) and trees (18%).

This report illustrates the typical weather in Puerto Rico, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Luis Muñoz Marín International Airport page.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

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