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Average Weather at Mount Pleasant Airport Falkland Islands

At Mount Pleasant Airport, the summers are cool, the winters are chilly and dry, and it is extremely windy and partly cloudy year round. Over the course of the year, the temperature typically varies from 33°F to 59°F and is rarely below 27°F or above 66°F.

The warm season lasts for 3.7 months, from November 25 to March 16, with an average daily high temperature above 55°F. The hottest day of the year is January 17, with an average high of 59°F and low of 46°F.

The cool season lasts for 3.6 months, from May 20 to September 7, with an average daily high temperature below 44°F. The coldest day of the year is July 15, with an average low of 33°F and high of 40°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature at Mount Pleasant AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoolcoldchilly
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

At Mount Pleasant Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year at Mount Pleasant Airport begins around September 6 and lasts for 6.9 months, ending around April 4. On February 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 48% of the time, and overcast or mostly cloudy 52% of the time.

The cloudier part of the year begins around April 4 and lasts for 5.1 months, ending around September 6. On July 7, the cloudiest day of the year, the sky is overcast or mostly cloudy 67% of the time, and clear, mostly clear, or partly cloudy 33% of the time.

Cloud Cover Categories

Cloud Cover Categories at Mount Pleasant AirportclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Feb 948%Feb 948%Jul 733%Jul 733%Sep 640%Sep 640%Apr 441%Apr 441%partly cloudymostly cloudyclearovercastmostly clear
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 at Mount Pleasant Airport varies throughout the year.

The wetter season lasts 6.0 months, from November 13 to May 13, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 31% on April 5.

The drier season lasts 6.0 months, from May 13 to November 13. The smallest chance of a wet day is 16% on October 4.

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 30% on March 27.

Daily Chance of Precipitation

Daily Chance of Precipitation at Mount Pleasant AirportwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Apr 531%Apr 531%Oct 416%Oct 416%Jan 128%Jan 128%Nov 1324%Nov 1324%May 1324%May 1324%rain
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. Mount Pleasant Airport experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Mount Pleasant Airport. The most rain falls during the 31 days centered around January 24, with an average total accumulation of 1.6 inches.

The least rain falls around October 7, with an average total accumulation of 0.8 inches.

Average Monthly Rainfall

Average Monthly Rainfall at Mount Pleasant AirportJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 inJan 241.6 inJan 241.6 inOct 70.8 inOct 70.8 inMar 221.6 inMar 221.6 inSep 31.0 inSep 31.0 in
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 at Mount Pleasant Airport varies extremely over the course of the year. In 2017, the shortest day is June 21, with 7 hours, 46 minutes of daylight; the longest day is December 21, with 16 hours, 42 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Mount Pleasant AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 10 minSep 2212 hr, 10 minSep 2216 hr, 42 minDec 2116 hr, 42 minDec 2112 hr, 14 minMar 2012 hr, 14 minMar 207 hr, 46 minJun 217 hr, 46 minJun 21daydaynight
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 4:28 AM on December 13, and the latest sunrise is 4 hours, 34 minutes later at 9:02 AM on June 25. The earliest sunset is at 4:48 PM on June 16, and the latest sunset is 4 hours, 27 minutes later at 9:15 PM on December 29.

Daylight saving time (DST) is not observed at Mount Pleasant Airport during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight at Mount Pleasant AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMDec 134:28 AMDec 134:28 AM9:15 PMDec 299:15 PMDec 29Jun 164:48 PMJun 164:48 PM9:02 AMJun 259:02 AMJun 25daynightnight
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.

The perceived humidity level at Mount Pleasant Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Humidity Comfort Levels at Mount Pleasant AirportJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 30%Jul 30%drydry
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 at Mount Pleasant Airport does not vary significantly over the course of the year, remaining within 0.4 miles per hour of 9.5 miles per hour throughout.

Average Wind Speed

Average Wind Speed at Mount Pleasant AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mphAug 279.9 mphAug 279.9 mphMay 199.1 mphMay 199.1 mph
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 at Mount Pleasant Airport is from the west throughout the year.

Wind Direction

Wind Direction at Mount Pleasant AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%northwestsoutheast
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

Mount Pleasant 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 3.2 months, from December 27 to April 3, with an average temperature above 48°F. The day of the year with the warmest water is February 6, with an average temperature of 50°F.

The time of year with cooler water lasts for 4.0 months, from June 21 to October 20, with an average temperature below 43°F. The day of the year with the coolest water is August 26, with an average temperature of 41°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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.2 months, from November 3 to February 10, with an average daily incident shortwave energy per square meter above 5.4 kWh. The brightest day of the year is December 21, with an average of 6.6 kWh.

The darker period of the year lasts for 4.3 months, from April 19 to August 27, with an average daily incident shortwave energy per square meter below 1.8 kWh. The darkest day of the year is June 25, with an average of 0.6 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Mount Pleasant AirportbrightbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWh10 kWhDec 216.6 kWhDec 216.6 kWhJun 250.6 kWhJun 250.6 kWhNov 35.4 kWhNov 35.4 kWhFeb 105.4 kWhFeb 105.4 kWhApr 191.8 kWhApr 191.8 kWhAug 271.8 kWhAug 271.8 kWh
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 Mount Pleasant Airport are -51.823 deg latitude, -58.447 deg longitude, and 131 ft elevation.

The topography within 2 miles of Mount Pleasant Airport contains only modest variations in elevation, with a maximum elevation change of 246 feet and an average elevation above sea level of 160 feet. Within 10 miles contains only modest variations in elevation (2,073 feet). Within 50 miles also contains large variations in elevation (2,310 feet).

The area within 2 miles of Mount Pleasant Airport is covered by shrubs (67%), trees (18%), and water (12%), within 10 miles by shrubs (40%) and water (36%), and within 50 miles by water (77%) and shrubs (12%).

Data Sources

This report illustrates the typical weather at Mount Pleasant 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

Mount Pleasant 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.

There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.

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.