December Weather in Falkland Islands Falkland IslandsDaily high temperatures increase by 2°F, from 53°F to 55°F, rarely falling below 48°F or exceeding 59°F. Daily low temperatures increase by 2°F, from 45°F to 47°F, rarely falling below 41°F or exceeding 50°F. For reference, on January 17, the hottest day of the year, temperatures in Falkland Islands typically range from 47°F to 56°F, while on July 17, the coldest day of the year, they range from 36°F to 40°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. CloudsThe month of December in Falkland Islands experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 55% throughout the month. The clearest day of the month is December 8, with clear, mostly clear, or partly cloudy conditions 46% of the time. For reference, on June 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on February 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 47%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Falkland Islands, the chance of a wet day over the course of December is essentially constant, remaining around 28% throughout. For reference, the year's highest daily chance of a wet day is 34% on March 20, and its lowest chance is 20% on October 7. RainfallTo show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during December in Falkland Islands is gradually increasing, starting the month at 1.3 inches, when it rarely exceeds 1.9 inches or falls below 0.8 inches, and ending the month at 1.7 inches, when it rarely exceeds 2.5 inches or falls below 0.9 inches. SunOver the course of December in Falkland Islands, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 16 minutes, implying an average daily increase of 31 seconds, and weekly increase of 3 minutes, 39 seconds. The shortest day of the month is December 1, with 16 hours, 20 minutes of daylight and the longest day is December 21, with 16 hours, 41 minutes of daylight. The earliest sunrise of the month in Falkland Islands is 4:32 AM on December 14 and the latest sunrise is 10 minutes later at 4:42 AM on December 31. The earliest sunset is 8:56 PM on December 1 and the latest sunset is 21 minutes later at 9:17 PM on December 29. Daylight saving time is not observed in Falkland Islands during 2024. For reference, on December 21, the longest day of the year, the Sun rises at 4:34 AM and sets 16 hours, 41 minutes later, at 9:15 PM, while on June 20, the shortest day of the year, it rises at 9:04 AM and sets 7 hours, 47 minutes later, at 4:51 PM. The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. MoonThe figure below presents a compact representation of key lunar data for December 2024. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
HumidityWe 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 chance that a given day will be muggy in Falkland Islands is essentially constant during December, remaining around 0% throughout. WindThis 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 Falkland Islands is essentially constant during December, remaining within 0.3 miles per hour of 18.2 miles per hour throughout. For reference, on August 26, the windiest day of the year, the daily average wind speed is 20.1 miles per hour, while on December 22, the calmest day of the year, the daily average wind speed is 17.8 miles per hour. The lowest daily average wind speed during December is 17.8 miles per hour on December 22. The hourly average wind direction in Falkland Islands throughout December is predominantly from the west, with a peak proportion of 56% on December 1. Water TemperatureFalkland Islands 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 surface water temperature in Falkland Islands is gradually increasing during December, rising by 2°F, from 46°F to 48°F, over the course of the month. Growing SeasonDefinitions 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 Falkland Islands typically lasts for 9.7 months (294 days), from around August 20 to around June 11, rarely starting after September 24, or ending before May 13. The month of December in Falkland Islands is reliably fully 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. The average accumulated growing degree days in Falkland Islands are gradually increasing during December, increasing by 43°F, from 21°F to 65°F, over the course of the month. Solar EnergyThis 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 in Falkland Islands is essentially constant during December, remaining within 0.1 kWh of 6.4 kWh throughout. The highest average daily incident shortwave solar energy during December is 6.5 kWh on December 25. TopographyFor the purposes of this report, the geographical coordinates of Falkland Islands are -51.750 deg latitude, -59.167 deg longitude, and 0 ft elevation. The topography within 2 miles of Falkland Islands is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet). The area within 2 miles of Falkland Islands is covered by shrubs (43%), trees (27%), and grassland (26%), within 10 miles by water (56%) and shrubs (25%), and within 50 miles by water (66%) and shrubs (19%). Data SourcesThis report illustrates the typical weather in Falkland Islands, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. The details of the data sources used for this report can be found on the Port Stanley Airport page. DisclaimerThe 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. 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