Average Weather in Jimaní Dominican Republic

The climate in Jimaní is hot, muggy, and partly cloudy. Over the course of the year, the temperature typically varies from 69°F to 95°F and is rarely below 66°F or above 99°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.

Average Hourly Temperature

The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

In Jimaní, 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 Jimaní begins around November 19 and lasts for 5.4 months, ending around April 30. On January 16, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 21% of the time.

The cloudier part of the year begins around April 30 and lasts for 6.6 months, ending around November 19. On June 2, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% of the time.

Cloud Cover

The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 6.6 months, from April 22 to November 10, with a greater than 12% chance of a given day being a wet day. The chance of a wet day peaks at 19% on May 22.

The drier season lasts 5.4 months, from November 10 to April 22. The smallest chance of a wet day is 5% on January 23.

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 19% on May 22.

Daily Chance of Precipitation

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Jimaní experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 10 months, from February 18 to December 23, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around October 6, with an average total accumulation of 2.3 inches.

The rainless period of the year lasts for 1.8 months, from December 23 to February 18. The least rain falls around January 8, with an average total accumulation of 0.4 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Jimaní varies over the course of the year. In 2017, the shortest day is December 21, with 11 hours, 1 minute of daylight; the longest day is June 21, with 13 hours, 15 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 6:10 AM on June 4, and the latest sunrise is 1 hour, 13 minutes later at 7:22 AM on January 18. The earliest sunset is at 6:08 PM on November 24, and the latest sunset is 1 hour, 19 minutes later at 7:28 PM on July 5.

Daylight saving time (DST) is not observed in Jimaní during 2017.

Sunrise & Sunset with Twilight

The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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.

Jimaní experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 9.1 months, from March 23 to December 26, during which time the comfort level is muggy, oppressive, or miserable at least 59% of the time. The muggiest day of the year is October 13, with muggy conditions 98% of the time.

The least muggy day of the year is February 12, with muggy conditions 46% of the time.

Humidity Comfort Levels

The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Jimaní experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 3.1 months, from May 26 to August 28, with average wind speeds of more than 3.5 miles per hour. The windiest day of the year is July 2, with an average hourly wind speed of 4.4 miles per hour.

The calmer time of year lasts for 8.9 months, from August 28 to May 26. The calmest day of the year is October 23, with an average hourly wind speed of 2.6 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

Wind Direction

The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Jimaní 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 3.7 months, from July 26 to November 17, with an average temperature above 84°F. The day of the year with the warmest water is September 21, with an average temperature of 85°F.

The time of year with cooler water lasts for 2.9 months, from January 14 to April 12, with an average temperature below 81°F. The day of the year with the coolest water is February 25, with an average temperature of 80°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 2.3 months, from February 28 to May 6, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is April 14, with an average of 6.8 kWh.

The darker period of the year lasts for 3.5 months, from September 21 to January 4, with an average daily incident shortwave energy per square meter below 5.1 kWh. The darkest day of the year is October 25, with an average of 4.6 kWh.

Average Daily Incident Shortwave Solar Energy

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Jimaní are 18.492 deg latitude, -71.850 deg longitude, and 220 ft elevation.

The topography within 2 miles of Jimaní contains very significant variations in elevation, with a maximum elevation change of 1,194 feet and an average elevation above sea level of 214 feet. Within 10 miles contains very significant variations in elevation (7,822 feet). Within 50 miles also contains extreme variations in elevation (8,898 feet).

The area within 2 miles of Jimaní is covered by grassland (51%), cropland (31%), and trees (11%), within 10 miles by grassland (41%) and cropland (25%), and within 50 miles by cropland (28%) and grassland (24%).

Data Sources

This report illustrates the typical weather in Jimaní, 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, Cibao International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Jimaní.

At a distance of 166 kilometers from Jimaní, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere .

The weight assigned to the MERRA-2 value depends on the distance from Jimaní to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 24%, making the weight assigned to the weather station 76%.

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.