1. WeatherSpark.com
  2. Greenland
  3. Qaasuitsup

Climate and Average Weather Year Round in Ilulissat Greenland

In Ilulissat, the summers are cold; the winters are frigid, snowy, and windy; and it is mostly cloudy year round. Over the course of the year, the temperature typically varies from -3°F to 52°F and is rarely below -24°F or above 58°F.

Based on the tourism score, the best time of year to visit Ilulissat for warm-weather activities is for the entire month of July.

Climate in Ilulissat

frigidfreezingvery coldcoldvery coldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow51%51%24%24%overcastclearprecipitation: 1.8 inprecipitation: 1.8 in0.3 in0.3 inmuggy: 0%muggy: 0%drydrytourism score: 1.1tourism score: 1.10.00.0
Ilulissat weather by month. Click on each chart for more information.

The warm season lasts for 3.0 months, from June 3 to September 4, with an average daily high temperature above 43°F. The hottest month of the year in Ilulissat is July, with an average high of 51°F and low of 42°F.

The cold season lasts for 3.2 months, from December 27 to April 2, with an average daily high temperature below 17°F. The coldest month of the year in Ilulissat is February, with an average low of -2°F and high of 9°F.

Average High and Low Temperature in Ilulissat

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.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 13°F9°F11°F23°F36°F46°F51°F48°F39°F30°F23°F19°F
Temp. 8°F3°F5°F17°F31°F42°F47°F44°F36°F26°F19°F14°F
Low 3°F-2°F-0°F12°F27°F38°F42°F40°F33°F23°F15°F10°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 in Ilulissat

Average Hourly Temperature in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfrigidfrigidfreezingfreezingvery coldcoldcold
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.
Map
Marker
© OpenStreetMap contributors

Compare Ilulissat to another city:

Map

In Ilulissat, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Ilulissat begins around April 21 and lasts for 6.4 months, ending around November 2.

The clearest month of the year in Ilulissat is June, during which on average the sky is clear, mostly clear, or partly cloudy 49% of the time.

The cloudier part of the year begins around November 2 and lasts for 5.6 months, ending around April 21.

The cloudiest month of the year in Ilulissat is January, during which on average the sky is overcast or mostly cloudy 74% of the time.

Cloud Cover Categories in Ilulissat

Cloud Cover Categories in IlulissatclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 951%Jul 951%Dec 3124%Dec 3124%Apr 2138%Apr 2138%Nov 238%Nov 238%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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 74%72%68%63%55%51%52%57%58%59%66%74%
Clearer 26%28%32%37%45%49%48%43%42%41%34%26%

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

The wetter season lasts 5.3 months, from June 12 to November 22, with a greater than 14% chance of a given day being a wet day. The month with the most wet days in Ilulissat is August, with an average of 6.6 days with at least 0.04 inches of precipitation.

The drier season lasts 6.7 months, from November 22 to June 12. The month with the fewest wet days in Ilulissat is January, with an average of 2.0 days with at least 0.04 inches of precipitation.

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 in Ilulissat changes throughout the year.

Snow alone is the most common for 6.3 months, from October 22 to May 3. The month with the most days of snow alone in Ilulissat is November, with an average of 2.4 days.

Rain alone is the most common for 5.7 months, from May 3 to October 22. The month with the most days of rain alone in Ilulissat is August, with an average of 6.6 days.

Daily Chance of Precipitation in Ilulissat

Daily Chance of Precipitation in IlulissatsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 1523%Aug 1523%Jan 66%Jan 66%May 311%May 311%Oct 2214%Oct 2214%Jun 1214%Jun 1214%Nov 2214%Nov 2214%NowNowsnowrain
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).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 0.2d0.1d0.1d0.6d2.1d3.9d5.2d6.6d4.7d2.1d0.9d0.3d
Mixed 0.4d0.4d0.4d0.8d0.7d0.1d0.0d0.0d0.3d1.0d1.1d0.4d
Snow 1.4d1.5d1.6d1.8d0.8d0.1d0.0d0.0d0.3d1.4d2.4d2.1d
Any 2.0d2.0d2.2d3.2d3.7d4.1d5.2d6.6d5.4d4.5d4.4d2.8d

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. Ilulissat experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.5 months, from May 2 to November 16, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Ilulissat is August, with an average rainfall of 1.8 inches.

The rainless period of the year lasts for 5.5 months, from November 16 to May 2. The month with the least rain in Ilulissat is January, with an average rainfall of 0.1 inches.

Average Monthly Rainfall in Ilulissat

Average Monthly Rainfall in IlulissatrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inAug 151.8 inAug 151.8 inJan 80.1 inJan 80.1 inMay 20.5 inMay 20.5 inNov 160.5 inNov 160.5 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 snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.1″0.1″0.1″0.3″0.6″0.9″1.2″1.8″1.2″0.7″0.5″0.1″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Ilulissat experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 8.2 months, from September 21 to May 28, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Ilulissat is November, with an average snowfall of 5.2 inches.

The snowless period of the year lasts for 3.8 months, from May 28 to September 21. The least snow falls around July 28, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Ilulissat

Average Monthly Snowfall in IlulissatsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inNov 185.2 inNov 185.2 inJul 280.0 inJul 280.0 inApr 123.8 inApr 123.8 inFeb 113.1 inFeb 113.1 inSep 211.0 inSep 211.0 inMay 281.0 inMay 281.0 inNowNow
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 2.3″3.1″3.1″3.8″1.9″0.2″0.0″0.0″0.6″3.4″5.2″3.3″

Due to its extreme latitude, Ilulissat experiences polar day (also known as the midnight Sun) during the summer and polar night during the winter. These are periods of time in which the sun is continuously above or below the horizon for more than one day. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.

In the summer in Ilulissat during 2024, the Sun is continuously above the horizon for 2.1 months, rising at 2:40 AM on May 19, and not setting again until 2:00 AM on July 24.

In the winter in Ilulissat during 2024, the Sun is continuously below the horizon for 1.5 months, setting at 1:40 PM on November 28, and not rising again until 1:08 PM on January 13.

Hours of Daylight and Twilight in Ilulissat

Hours of Daylight and Twilight in Ilulissatpolar dayJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 15 minMar 2012 hr, 15 minMar 2024 hr, 0 minJun 2024 hr, 0 minJun 2012 hr, 26 minSep 2212 hr, 26 minSep 220 minDec 210 minDec 21nightnightdayNowNow
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.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 2.0h7.5h11.8h16.2h21.9h24.0h23.3h17.7h13.2h8.9h3.9h0.0h

Daylight saving time (DST) is observed in Ilulissat during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 26.

Sunrise & Sunset with Twilight and Daylight Saving Time in Ilulissat

Sunrise & Sunset with Twilight and Daylight Saving Time in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMMay 192:40 AMMay 192:40 AM2:00 AMJul 232:00 AMJul 231:40 PMNov 281:40 PMNov 28Jan 131:08 PMJan 131:08 PMMar 31DSTMar 31DSTdaynightnightnightnightSolarMidnightSolarMidnightSolarNoonNowNow
The solar day over the course of the year 2024. 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 transitions to and from daylight saving time are indicated by the 'DST' labels.

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 Ilulissat

Solar Elevation and Azimuth in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101020203030400101020203040-344NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 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 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.

Moon Rise, Set & Phases in Ilulissat

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.

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 Ilulissat, 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 in Ilulissat

Humidity Comfort Levels in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 20%Jul 20%NowNowdrydry
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

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 Ilulissat experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.9 months, from September 19 to March 14, with average wind speeds of more than 8.6 miles per hour. The windiest month of the year in Ilulissat is December, with an average hourly wind speed of 11.5 miles per hour.

The calmer time of year lasts for 6.1 months, from March 14 to September 19. The calmest month of the year in Ilulissat is July, with an average hourly wind speed of 5.7 miles per hour.

Average Wind Speed in Ilulissat

Average Wind Speed in IlulissatwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphNov 2811.7 mphNov 2811.7 mphJul 135.5 mphJul 135.5 mphSep 198.6 mphSep 198.6 mphMar 148.6 mphMar 148.6 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 10.99.88.67.97.26.35.76.68.410.011.211.5

The predominant average hourly wind direction in Ilulissat varies throughout the year.

The wind is most often from the south for 5.0 months, from March 18 to August 17, with a peak percentage of 43% on July 28. The wind is most often from the east for 7.0 months, from August 17 to March 18, with a peak percentage of 47% on January 1.

Wind Direction in Ilulissat

Wind Direction in IlulissatESEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowsoutheastnorthwest
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).

Ilulissat 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 2.8 months, from July 2 to September 26, with an average temperature above 37°F. The month of the year in Ilulissat with the warmest water is August, with an average temperature of 38°F.

The time of year with cooler water lasts for 5.0 months, from December 11 to May 9, with an average temperature below 32°F. The month of the year in Ilulissat with the coolest water is March, with an average temperature of 30°F.

Average Water Temperature in Ilulissat

Average Water Temperature in IlulissatwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec28°F28°F30°F30°F32°F32°F34°F34°F36°F36°F38°F38°F40°F40°F42°F42°F44°F44°FAug 2239°FAug 2239°F30°FMar 830°FMar 8Jul 237°FJul 237°FSep 2637°FSep 2637°FDec 1132°FDec 1132°FMay 932°FMay 932°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 30°F30°F30°F30°F32°F36°F38°F38°F38°F35°F33°F31°F

To characterize how pleasant the weather is in Ilulissat 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 Ilulissat for general outdoor tourist activities is for the entire month of July, with a peak score in the third week of July.

Tourism Score in Ilulissat

Tourism Score in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec002244668810101.11.10.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitation
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 Ilulissat for hot-weather activities is from early to mid July.

Beach/Pool Score in Ilulissat

Beach/Pool Score in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.00.00.00.0cloudscloudsprecipitationprecipitation
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.

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 Ilulissat typically lasts for 3.0 months (92 days), from around June 7 to around September 7, rarely starting before May 18 or after July 1, and rarely ending before August 17 or after September 25.

Time Spent in Various Temperature Bands and the Growing Season in Ilulissat

Time Spent in Various Temperature Bands and the Growing Season in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 750%Jun 750%Sep 750%Sep 750%Jul 190%Jul 190%Aug 1790%Aug 1790%May 1810%May 1810%Sep 2510%Sep 2510%0%Mar 20%Mar 2NowNowfrigidfreezingvery 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 in Ilulissat

Growing Degree Days in IlulissatJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°FDec 3146°FDec 3146°FNowNow
The average growing degree days accumulated over the course of the year, 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 experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 2.5 months, from May 11 to July 25, with an average daily incident shortwave energy per square meter above 5.2 kWh. The brightest month of the year in Ilulissat is June, with an average of 6.4 kWh.

The darker period of the year lasts for 5.2 months, from October 1 to March 8, with an average daily incident shortwave energy per square meter below 1.3 kWh. The darkest month of the year in Ilulissat is December, with an average of 0.0 kWh.

Average Daily Incident Shortwave Solar Energy in Ilulissat

Average Daily Incident Shortwave Solar Energy in IlulissatbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 246.5 kWhJun 246.5 kWhDec 130.0 kWhDec 130.0 kWhMay 115.2 kWhMay 115.2 kWhOct 11.3 kWhOct 11.3 kWhMar 81.3 kWhMar 81.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 0.00.41.83.65.56.45.73.92.10.70.10.0

For the purposes of this report, the geographical coordinates of Ilulissat are 69.217 deg latitude, -51.100 deg longitude, and 115 ft elevation.

The topography within 2 miles of Ilulissat contains only modest variations in elevation, with a maximum elevation change of 394 feet and an average elevation above sea level of 101 feet. Within 10 miles contains only modest variations in elevation (1,654 feet). Within 50 miles contains very significant variations in elevation (4,396 feet).

The area within 2 miles of Ilulissat is covered by water (28%), sparse vegetation (25%), trees (17%), and snow and glaciers (16%), within 10 miles by water (50%) and snow and glaciers (21%), and within 50 miles by water (41%) and snow and glaciers (32%).

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

At a distance of 91 kilometers from Ilulissat, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

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

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.

Please review our full terms contained on our Terms of Service page.