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December Weather in Nanortalik Greenland

Daily high temperatures decrease by 3°F, from 32°F to 29°F, rarely falling below 19°F or exceeding 41°F.

Daily low temperatures decrease by 4°F, from 26°F to 23°F, rarely falling below 14°F or exceeding 35°F.

For reference, on July 30, the hottest day of the year, temperatures in Nanortalik typically range from 38°F to 47°F, while on February 27, the coldest day of the year, they range from 21°F to 28°F.

Average High and Low Temperature in December in Nanortalik

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 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.

Average Hourly Temperature in December in Nanortalik

Average Hourly Temperature in December in NanortalikDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJanfreezingvery cold
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.

King Cove, Alaska, United States (3,768 miles away) and Diamond Ridge, Alaska, United States (3,273 miles) are the far-away foreign places with temperatures most similar to Nanortalik (view comparison).

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The month of December in Nanortalik experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 62% to 69%.

The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 38% of the time.

For reference, on February 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 75%, while on October 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 48%.

Cloud Cover Categories in December in Nanortalik

Cloud Cover Categories in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanDec 138%Dec 138%Dec 3131%Dec 3131%Dec 1137%Dec 1137%Dec 2134%Dec 2134%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Nanortalik, the chance of a wet day over the course of December is essentially constant, remaining around 33% throughout.

For reference, the year's highest daily chance of a wet day is 38% on September 9, and its lowest chance is 27% on March 20.

Over the course of December in Nanortalik, the chance of a day with only rain decreases from 15% to 7%, the chance of a day with mixed snow and rain remains an essentially constant 12% throughout, and the chance of a day with only snow increases from 9% to 15%.

Probability of Precipitation in December in Nanortalik

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 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 Nanortalik is rapidly decreasing, starting the month at 2.9 inches, when it rarely exceeds 6.1 inches or falls below 0.6 inches, and ending the month at 1.6 inches, when it rarely exceeds 3.3 inches or falls below 0.4 inches.

Average Monthly Rainfall in December in Nanortalik

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 snowfall.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during December in Nanortalik is very rapidly increasing, starting the month at 9.3 inches, when it rarely exceeds 19.9 inches or falls below 1.9 inches, and ending the month at 16.3 inches, when it rarely exceeds 30.8 inches or falls below 3.9 inches.

Average Monthly Snowfall in December in Nanortalik

The average snowfall (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 rainfall.

Over the course of December in Nanortalik, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 24 minutes, implying an average daily decrease of 49 seconds, and weekly decrease of 5 minutes, 43 seconds.

The shortest day of the month is December 21, with 5 hours, 49 minutes of daylight and the longest day is December 1, with 6 hours, 24 minutes of daylight.

Hours of Daylight and Twilight in December in Nanortalik

Hours of Daylight and Twilight in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 215 hr, 49 minDec 215 hr, 49 minnightnightdaydayDec 16 hr, 24 minDec 16 hr, 24 min
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 of the month in Nanortalik is 9:38 AM on December 1 and the latest sunrise is 28 minutes later at 10:05 AM on December 26.

The earliest sunset is 3:52 PM on December 15 and the latest sunset is 11 minutes later at 4:03 PM on December 31.

Daylight saving time is observed in Nanortalik during 2024, but it neither starts nor ends during December, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 4:34 AM and sets 18 hours, 55 minutes later, at 11:30 PM, while on December 21, the shortest day of the year, it rises at 10:04 AM and sets 5 hours, 49 minutes later, at 3:54 PM.

Sunrise & Sunset with Twilight in December in Nanortalik

Sunrise & Sunset with Twilight in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031312 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNovJan9:38 AM9:38 AMDec 14:01 PMDec 14:01 PM10:04 AM10:04 AMDec 314:03 PMDec 314:03 PM10:00 AM10:00 AMDec 153:52 PMDec 153:52 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of December. 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.

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.

Solar Elevation and Azimuth in December in Nanortalik

Solar Elevation and Azimuth in December in NanortalikDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJan0010000
northeastsouthwest
Solar elevation and azimuth over the course of December 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The 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.

Moon Rise, Set & Phases in December in Nanortalik

Moon Rise, Set & Phases in December in NanortalikDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 110:48 AMNov 110:48 AMNov 157:29 PMNov 157:29 PMDec 14:22 AMDec 14:22 AMDec 157:02 AMDec 157:02 AMDec 308:28 PMDec 308:28 PMJan 138:28 PMJan 138:28 PMJan 2910:37 AMJan 2910:37 AM8:45 AM8:45 AM4:28 PM4:28 PM10:58 AM10:58 AM1:59 PM1:59 PM3:00 PM3:00 PM11:06 AM11:06 AM10:11 AM10:11 AM4:52 PM4:52 PM
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.
Dec 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
0%11:12 AMSSE2:52 PMSSW-1:02 PMS245,540 mi
2
2%12:38 PMSSE3:21 PMSSW-1:59 PMS243,462 mi
3
6%1:26 PMSSE4:31 PMSSW-2:58 PMS241,330 mi
4
12%1:43 PMSSE6:11 PMSSW-3:57 PMS239,182 mi
5
21%1:49 PMSE7:57 PMSW-4:53 PMS237,038 mi
6
30%1:50 PMSE9:42 PMSW-5:45 PMS234,918 mi
7
41%1:50 PMESE11:24 PMWSW-6:35 PMS232,854 mi
8
50%1:49 PMESE--7:23 PMS230,915 mi
9
65%-1:03 AMW1:48 PME8:10 PMS229,213 mi
10
76%-2:43 AMW1:47 PMENE8:58 PMS227,898 mi
11
85%-4:26 AMWNW1:46 PMENE9:48 PMS227,143 mi
12
93%-6:15 AMNW1:46 PMNE10:41 PMS227,110 mi
13
98%-8:10 AMNW1:49 PMNE11:39 PMS227,918 mi
14
99%-10:08 AMNNW1:59 PMNNE--
15
100%-11:48 AMNNW2:32 PMNNE12:40 AMS229,594 mi
16
99%-12:37 PMNNW3:52 PMNNE1:41 AMS232,058 mi
17
96%-12:53 PMNNW5:38 PMNNE2:40 AMS235,119 mi
18
90%-12:57 PMNW7:23 PMNE3:35 AMS238,512 mi
19
83%-12:58 PMNW9:01 PMENE4:24 AMS241,939 mi
20
74%-12:58 PMWNW10:31 PMENE5:09 AMS245,115 mi
21
65%-12:56 PMWNW11:56 PME5:51 AMS247,795 mi
22
50%-12:55 PMW-6:30 AMS249,793 mi
23
46%1:19 AME12:53 PMW-7:09 AMS250,988 mi
24
36%2:41 AMESE12:52 PMWSW-7:48 AMS251,332 mi
25
27%4:05 AMESE12:51 PMWSW-8:29 AMS250,843 mi
26
19%5:33 AMSE12:50 PMSW-9:12 AMS249,605 mi
27
12%7:08 AMSE12:52 PMSW-10:00 AMS247,753 mi
28
6%8:46 AMSSE12:58 PMSSW-10:52 AMS245,463 mi
29
2%10:20 AMSSE1:18 PMSSW-11:49 AMS242,934 mi
30
0%11:24 AMSSE2:13 PMSSW-12:48 PMS240,368 mi
31
1%11:49 AMSSE3:47 PMSSW-1:48 PMS237,941 mi

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 chance that a given day will be muggy in Nanortalik is essentially constant during December, remaining around 0% throughout.

Humidity Comfort Levels in December in Nanortalik

Humidity Comfort Levels in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NovJanDec 10%Dec 10%Dec 310%Dec 310%Dec 110%Dec 110%Dec 210%Dec 210%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.

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 Nanortalik is increasing during December, increasing from 18.5 miles per hour to 20.2 miles per hour over the course of the month.

For reference, on January 13, the windiest day of the year, the daily average wind speed is 21.2 miles per hour, while on July 25, the calmest day of the year, the daily average wind speed is 9.4 miles per hour.

Average Wind Speed in December in Nanortalik

Average Wind Speed in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mph30 mph30 mph35 mph35 mphNovJanDec 118.5 mphDec 118.5 mphDec 3120.2 mphDec 3120.2 mphDec 1619.6 mphDec 1619.6 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Nanortalik throughout December is predominantly from the west, with a peak proportion of 45% on December 10.

Wind Direction in December in Nanortalik

Wind Direction in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%NovJanwesteastnorthsouth
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).

Nanortalik 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 Nanortalik is essentially constant during December, remaining around 34°F throughout.

Average Water Temperature in December in Nanortalik

Average Water Temperature in December in NanortalikDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129°F29°F30°F30°F31°F31°F32°F32°F33°F33°F34°F34°F35°F35°F36°F36°F37°F37°F38°F38°F39°F39°FNovJanDec 134°FDec 134°FDec 3133°FDec 3133°FDec 1134°FDec 1134°FDec 2134°FDec 2134°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Nanortalik typically lasts for 2.2 months (68 days), from around July 16 to around September 22, rarely starting before June 14, or ending after October 18.

The month of December in Nanortalik is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in December in Nanortalik

Time Spent in Various Temperature Bands and the Growing Season in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJan-0%Dec 16-0%Dec 16frigidfreezingvery coldcold
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.

The average accumulated growing degree days in Nanortalik are essentially constant during December, remaining around 14°F throughout.

Growing Degree Days in December in Nanortalik

The average growing degree days accumulated over the course of December, with 25th to 75th and 10th to 90th percentile bands.

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 in Nanortalik is essentially constant during December, remaining around 0.2 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 0.2 kWh on December 23.

Average Daily Incident Shortwave Solar Energy in December in Nanortalik

Average Daily Incident Shortwave Solar Energy in December in NanortalikDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.2 kWh0.2 kWh0.4 kWh0.4 kWh0.6 kWh0.6 kWh0.8 kWh0.8 kWh1.0 kWh1.0 kWh1.2 kWh1.2 kWh1.4 kWh1.4 kWhNovJanDec 230.2 kWhDec 230.2 kWhDec 10.3 kWhDec 10.3 kWhDec 110.2 kWhDec 110.2 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.

For the purposes of this report, the geographical coordinates of Nanortalik are 60.143 deg latitude, -45.237 deg longitude, and 13 ft elevation.

The topography within 2 miles of Nanortalik contains very significant variations in elevation, with a maximum elevation change of 1,634 feet and an average elevation above sea level of 155 feet. Within 10 miles contains very significant variations in elevation (3,822 feet). Within 50 miles also contains extreme variations in elevation (7,507 feet).

The area within 2 miles of Nanortalik is covered by sparse vegetation (42%), water (35%), and trees (14%), within 10 miles by water (56%) and sparse vegetation (27%), and within 50 miles by water (61%) and snow and glaciers (16%).

This report illustrates the typical weather in Nanortalik, 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 Nanortalik.

For each station, the records are corrected for the elevation difference between that station and Nanortalik 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 Nanortalik is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Nanortalik and a given station.

The stations contributing to this reconstruction are:

  • Angisoq (BGAS, 90%, 11 mi, south, 39 ft elevation change)
  • Julianehaab (BGJH, 10%, 48 mi, northwest, 98 ft elevation change)

To get a sense of how much these sources agree with each other, you can view a comparison of Nanortalik and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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 © OpenStreetMap contributors.

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.

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