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Average Weather in Stanley Falkland Islands

In Stanley, the summers are cool, the winters are very cold, and it is extremely windy and mostly cloudy year round. Over the course of the year, the temperature typically varies from 36°F to 56°F and is rarely below 32°F or above 61°F.

Based on the tourism score, the best time of year to visit Stanley for warm-weather activities is from early January to mid February.

Climate Summary

coolcoldvery coldcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow47%47%32%32%overcastclearprecipitation: 1.9 inprecipitation: 1.9 in1.0 in1.0 inmuggy: 0%muggy: 0%drydrytourism score: 2.6tourism score: 2.60.00.0
Click on each chart for more information.

Temperature

The warm season lasts for 3.4 months, from December 2 to March 15, with an average daily high temperature above 53°F. The hottest day of the year is January 17, with an average high of 56°F and low of 47°F.

The cool season lasts for 3.6 months, from May 20 to September 6, with an average daily high temperature below 43°F. The coldest day of the year is July 18, with an average low of 36°F and high of 40°F.

Average High and Low Temperature

Average High and Low Temperature in StanleywarmwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJul 1840°FJul 1840°FJan 1756°FJan 1756°F36°F36°F47°F47°FDec 253°FDec 253°FMar 1553°FMar 1553°FMay 2043°FMay 2043°FSep 643°FSep 643°F45°F45°F45°F45°F38°F38°F37°F37°FNowNow
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 in StanleyJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldcoldcoldcool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Tórshavn, Faroe Islands (8,347 miles away) is the far-away foreign place with temperatures most similar to Stanley (view comparison).

Clouds

In Stanley, 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 in Stanley begins around September 7 and lasts for 7.0 months, ending around April 5. On February 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 47% of the time, and overcast or mostly cloudy 53% of the time.

The cloudier part of the year begins around April 5 and lasts for 5.0 months, ending around September 7. On July 7, the cloudiest day of the year, the sky is overcast or mostly cloudy 68% of the time, and clear, mostly clear, or partly cloudy 32% of the time.

Cloud Cover Categories

Cloud Cover Categories in StanleyclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Feb 947%Feb 947%Jul 732%Jul 732%Sep 739%Sep 739%Apr 540%Apr 540%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

The wetter season lasts 5.3 months, from November 19 to April 29, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 33% on March 20.

The drier season lasts 6.7 months, from April 29 to November 19. The smallest chance of a wet day is 19% on October 7.

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 33% on March 20.

Daily Chance of Precipitation

Daily Chance of Precipitation in StanleywetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 2033%Mar 2033%Oct 719%Oct 719%Jan 128%Jan 128%Nov 1926%Nov 1926%Apr 2926%Apr 2926%NowNowrain
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. Stanley experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Stanley. The most rain falls during the 31 days centered around March 28, with an average total accumulation of 1.9 inches.

The least rain falls around October 7, with an average total accumulation of 1.0 inches.

Average Monthly Rainfall

Average Monthly Rainfall in StanleyJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 inMar 281.9 inMar 281.9 inOct 71.0 inOct 71.0 inFeb 51.7 inFeb 51.7 inJul 221.3 inJul 221.3 inSep 21.3 inSep 21.3 inNowNow
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 Stanley varies extremely over the course of the year. In 2021, the shortest day is June 21, with 7 hours, 48 minutes of daylight; the longest day is December 21, with 16 hours, 41 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in StanleyJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 10 minSep 2212 hr, 10 minSep 2216 hr, 41 minDec 2116 hr, 41 minDec 2112 hr, 14 minMar 2012 hr, 14 minMar 207 hr, 48 minJun 217 hr, 48 minJun 21daydaynightNowNow
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 4:27 AM on December 13, and the latest sunrise is 4 hours, 33 minutes later at 8:59 AM on June 25. The earliest sunset is at 4:46 PM on June 16, and the latest sunset is 4 hours, 26 minutes later at 9:12 PM on December 29.

Daylight saving time (DST) is not observed in Stanley during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in StanleyJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMDec 134:27 AMDec 134:27 AM9:12 PMDec 299:12 PMDec 29Jun 164:46 PMJun 164:46 PM8:59 AMJun 258:59 AMJun 25daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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.

Moon Rise, Set & Phases

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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 in Stanley, 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 in StanleyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 30%Jul 30%drydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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

The windier part of the year lasts for 3.9 months, from May 31 to September 26, with average wind speeds of more than 18.8 miles per hour. The windiest day of the year is August 27, with an average hourly wind speed of 19.9 miles per hour.

The calmer time of year lasts for 8.1 months, from September 26 to May 31. The calmest day of the year is December 23, with an average hourly wind speed of 17.8 miles per hour.

Average Wind Speed

Average Wind Speed in StanleywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mph30 mph30 mphAug 2719.9 mphAug 2719.9 mphDec 2317.8 mphDec 2317.8 mphMay 3118.8 mphMay 3118.8 mphNowNow
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 Stanley is from the west throughout the year.

Wind Direction

Wind Direction in StanleyJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestnorthsoutheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 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

Stanley 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 3.1 months, from December 29 to March 31, with an average temperature above 48°F. The day of the year with the warmest water is February 7, with an average temperature of 49°F.

The time of year with cooler water lasts for 4.0 months, from June 22 to October 23, with an average temperature below 43°F. The day of the year with the coolest water is August 27, with an average temperature of 41°F.

Average Water Temperature

Average Water Temperature in StanleywarmcoolJanFebMarAprMayJunJulAugSepOctNovDec38°F38°F40°F40°F42°F42°F44°F44°F46°F46°F48°F48°F50°F50°F52°F52°FFeb 749°FFeb 749°F41°FAug 2741°FAug 27Dec 2948°FDec 2948°FMar 3148°FMar 3148°FJun 2243°FJun 2243°FOct 2343°FOct 2343°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Stanley throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Stanley for general outdoor tourist activities is from early January to mid February, with a peak score in the third week of January.

Tourism Score

Tourism Score in Stanleybest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.62.60.00.0precipitationprecipitationcloudscloudstemperaturetemperature
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Stanley for hot-weather activities is from early to mid January.

Beach/Pool Score

Beach/Pool Score in StanleyJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.00.00.00.0precipitationprecipitationcloudscloudstemperaturetemperature
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

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).

The growing season in Stanley typically lasts for 9.5 months (289 days), from around August 23 to around June 8, rarely starting before July 19 or after September 25, and rarely ending before May 11 or after July 12.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Stanleygrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Aug 2350%Aug 2350%Jun 850%Jun 890%Sep 2590%Sep 2590%May 1190%May 1110%Jul 1910%Jul 1910%Jul 1210%Jul 12Jan 21100%Jan 21100%very coldcoldcool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

Growing Degree Days

Growing Degree Days in StanleyJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F50°F50°F100°F100°F150°F150°F200°F200°F250°F250°F300°F300°FJun 30250°FJun 30250°FNowNow
The average growing degree days accumulated over the course of the year, 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 4 to February 10, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is December 21, with an average of 6.5 kWh.

The darker period of the year lasts for 4.2 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 in StanleybrightbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhDec 216.5 kWhDec 216.5 kWhJun 250.6 kWhJun 250.6 kWhNov 45.3 kWhNov 45.3 kWhFeb 105.3 kWhFeb 105.3 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 Stanley are -51.700 deg latitude, -57.850 deg longitude, and 141 ft elevation.

The topography within 2 miles of Stanley contains only modest variations in elevation, with a maximum elevation change of 433 feet and an average elevation above sea level of 71 feet. Within 10 miles contains only modest variations in elevation (928 feet). Within 50 miles contains very significant variations in elevation (2,310 feet).

The area within 2 miles of Stanley is covered by water (41%), shrubs (24%), and trees (18%), within 10 miles by water (75%) and trees (13%), and within 50 miles by water (85%).

Data Sources

This report illustrates the typical weather in Stanley, 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 are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Stanley.

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

The estimated value at Stanley is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Stanley and a given station.

The stations contributing to this reconstruction are: Port Stanley Airport (96%, 5.2 kilometers, east) and Mount Pleasant Airport (4.4%, 43 kilometers, west).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports 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.

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.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.