Average Weather in Mariel Cuba

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In Mariel, the summers are hot, oppressive, wet, and overcast and the winters are comfortable, humid, windy, and mostly clear. Over the course of the year, the temperature typically varies from 63°F to 89°F and is rarely below 54°F or above 92°F.

The hot season lasts for 3.8 months, from June 4 to September 28, with an average daily high temperature above 87°F. The hottest day of the year is August 9, with an average high of 89°F and low of 75°F.

The cool season lasts for 3.0 months, from December 4 to March 4, with an average daily high temperature below 81°F. The coldest day of the year is January 19, with an average low of 63°F and high of 78°F.

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

In Mariel, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Mariel begins around October 28 and lasts for 6.7 months, ending around May 18. On February 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 78% of the time, and overcast or mostly cloudy 22% of the time.

The cloudier part of the year begins around May 18 and lasts for 5.3 months, ending around October 28. On June 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Mariel varies throughout the year.

The wetter season lasts 5.4 months, from May 17 to October 28, with a greater than 20% chance of a given day being a wet day. The chance of a wet day peaks at 31% on September 17.

The drier season lasts 6.6 months, from October 28 to May 17. The smallest chance of a wet day is 9% on December 20.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 31% on September 17.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Mariel experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Mariel. The most rain falls during the 31 days centered around September 8, with an average total accumulation of 4.2 inches.

The least rain falls around December 17, with an average total accumulation of 1.2 inches.

The length of the day in Mariel varies over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 43 minutes of daylight; the longest day is June 21, with 13 hours, 33 minutes of daylight.

The earliest sunrise is at 6:38 AM on November 5, and the latest sunrise is 1 hour, 4 minutes later at 7:42 AM on March 12. The earliest sunset is at 5:44 PM on November 28, and the latest sunset is 2 hours, 36 minutes later at 8:20 PM on July 3.

Daylight saving time (DST) is observed in Mariel during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

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.

Mariel experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.7 months, from March 25 to December 16, during which time the comfort level is muggy, oppressive, or miserable at least 57% of the time. The muggiest day of the year is September 6, with muggy conditions 100% of the time.

The least muggy day of the year is January 26, with muggy conditions 43% 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 Mariel experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from October 11 to May 12, with average wind speeds of more than 5.5 miles per hour. The windiest day of the year is November 12, with an average hourly wind speed of 6.5 miles per hour.

The calmer time of year lasts for 5.0 months, from May 12 to October 11. The calmest day of the year is July 28, with an average hourly wind speed of 4.6 miles per hour.

The predominant average hourly wind direction in Mariel is from the east throughout the year.

Mariel 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 water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.3 months, from July 1 to October 9, with an average temperature above 84°F. The day of the year with the warmest water is August 11, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.8 months, from December 23 to April 17, with an average temperature below 80°F. The day of the year with the coolest water is February 3, with an average temperature of 78°F.

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 experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.0 months, from March 19 to May 18, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is April 27, with an average of 7.0 kWh.

The darker period of the year lasts for 3.2 months, from October 22 to January 27, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest day of the year is December 23, with an average of 4.1 kWh.

For the purposes of this report, the geographical coordinates of Mariel are 22.989 deg latitude, -82.754 deg longitude, and 75 ft elevation.

The topography within 2 miles of Mariel contains only modest variations in elevation, with a maximum elevation change of 325 feet and an average elevation above sea level of 93 feet. Within 10 miles contains only modest variations in elevation (846 feet). Within 50 miles contains very significant variations in elevation (2,306 feet).

The area within 2 miles of Mariel is covered by cropland (36%), trees (17%), and shrubs (14%), within 10 miles by cropland (36%) and water (35%), and within 50 miles by water (62%) and cropland (19%).

This report illustrates the typical weather in Mariel, 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 is only a single weather station, José Martí International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Mariel.

At a distance of 35 kilometers from Mariel, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Mariel according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.