Average Weather at Las Américas International Airport Dominican Republic

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2. Dominican Republic
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4. Las Américas International Airport

The climate at Las Américas International Airport is hot, oppressive, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 68°F to 89°F and is rarely below 65°F or above 92°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.

At Las Américas International Airport, 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 at Las Américas International Airport begins around November 17 and lasts for 5.5 months, ending around May 3. On January 13, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 82% of the time, and overcast or mostly cloudy 18% of the time.

The cloudier part of the year begins around May 3 and lasts for 6.5 months, ending around November 17. On June 6, the cloudiest day of the year, the sky is overcast or mostly cloudy 74% of the time, and clear, mostly clear, or partly cloudy 26% 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 at Las Américas International Airport varies throughout the year.

The wetter season lasts 7.0 months, from April 25 to November 24, with a greater than 14% chance of a given day being a wet day. The chance of a wet day peaks at 22% on May 19.

The drier season lasts 5.0 months, from November 24 to April 25. The smallest chance of a wet day is 7% on March 10.

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 22% on May 19.

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. Las Américas International Airport experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Las Américas International Airport. The most rain falls during the 31 days centered around May 20, with an average total accumulation of 2.4 inches.

The least rain falls around March 2, with an average total accumulation of 0.6 inches.

The length of the day at Las Américas International Airport varies over the course of the year. In 2017, the shortest day is December 21, with 11 hours, 2 minutes of daylight; the longest day is June 21, with 13 hours, 14 minutes of daylight.

The earliest sunrise is at 6:01 AM on June 4, and the latest sunrise is 1 hour, 12 minutes later at 7:13 AM on January 18. The earliest sunset is at 6:00 PM on November 24, and the latest sunset is 1 hour, 19 minutes later at 7:19 PM on July 6.

Daylight saving time (DST) is not observed at Las Américas International Airport during 2017.

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.

Las Américas International Airport experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 10 months, from March 18 to January 18, during which time the comfort level is muggy, oppressive, or miserable at least 89% of the time. The muggiest day of the year is August 9, with muggy conditions 100% of the time.

The least muggy day of the year is February 13, with muggy conditions 85% 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 at Las Américas International Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.3 months, from November 10 to May 19, with average wind speeds of more than 4.8 miles per hour. The windiest day of the year is December 18, with an average hourly wind speed of 5.5 miles per hour.

The calmer time of year lasts for 5.7 months, from May 19 to November 10. The calmest day of the year is October 10, with an average hourly wind speed of 4.1 miles per hour.

The predominant average hourly wind direction at Las Américas International Airport is from the east throughout the year.

Las Américas International Airport 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 3.4 months, from July 30 to November 11, with an average temperature above 83°F. The day of the year with the warmest water is September 16, with an average temperature of 84°F.

The time of year with cooler water lasts for 3.3 months, from January 5 to April 15, with an average temperature below 80°F. The day of the year with the coolest water is February 23, with an average temperature of 79°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 6 to May 6, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is April 14, with an average of 7.0 kWh.

The darker period of the year lasts for 4.2 months, from September 1 to January 6, with an average daily incident shortwave energy per square meter below 5.0 kWh. The darkest day of the year is October 6, with an average of 4.5 kWh.

For the purposes of this report, the geographical coordinates of Las Américas International Airport are 18.430 deg latitude, -69.669 deg longitude, and 30 ft elevation.

The topography within 2 miles of Las Américas International Airport is essentially flat, with a maximum elevation change of 82 feet and an average elevation above sea level of 37 feet. Within 10 miles is essentially flat (171 feet). Within 50 miles contains only modest variations in elevation (5,696 feet).

The area within 2 miles of Las Américas International Airport is covered by water (29%), trees (27%), grassland (25%), and shrubs (13%), within 10 miles by water (55%) and cropland (17%), and within 50 miles by water (50%) and trees (20%).

This report illustrates the typical weather at Las Américas International Airport, 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

Las Américas International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back are Punta Cana International Airport, Cibao International Airport, and Aeropuerto Internacional La Unión.

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.