Average Weather at Nanisivik Airport Canada
At Nanisivik Airport, the summers are short, chilly, and mostly cloudy and the winters are long, frigid, dry, and overcast. Over the course of the year, the temperature typically varies from -23°F to 48°F and is rarely below -36°F or above 57°F.
The warm season lasts for 2.5 months, from June 15 to August 30, with an average daily high temperature above 36°F. The hottest day of the year is July 15, with an average high of 48°F and low of 40°F.
The cold season lasts for 4.5 months, from November 23 to April 9, with an average daily high temperature below 0°F. The coldest day of the year is February 23, with an average low of -23°F and high of -12°F.
Average High and Low Temperature
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
At Nanisivik Airport, 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 at Nanisivik Airport begins around April 30 and lasts for 4.8 months, ending around September 23. On June 8, 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 September 23 and lasts for 7.2 months, ending around April 30. On December 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 92% of the time, and clear, mostly clear, or partly cloudy 8% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Nanisivik Airport varies throughout the year.
The wetter season lasts 3.4 months, from June 14 to September 27, with a greater than 14% chance of a given day being a wet day. The chance of a wet day peaks at 26% on August 4.
The drier season lasts 8.6 months, from September 27 to June 14. The smallest chance of a wet day is 1% on February 6.
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 at Nanisivik Airport changes throughout the year.
Snow alone is the most common for 9.2 months, from September 4 to June 12. The highest chance of a day with snow alone is 11% on September 25.
Rain alone is the most common for 2.8 months, from June 12 to September 4. The highest chance of a day with rain alone is 24% on July 23.
Daily Chance of Precipitation
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. Nanisivik Airport experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 2.7 months, from June 17 to September 9, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 30, with an average total accumulation of 1.6 inches.
The rainless period of the year lasts for 9.3 months, from September 9 to June 17. The least rain falls around January 1, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Nanisivik Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 7.6 months, from April 9 to November 27, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around September 27, with an average total liquid-equivalent accumulation of 0.6 inches.
The snowless period of the year lasts for 4.4 months, from November 27 to April 9. The least snow falls around February 13, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
Due to its extreme latitude, Nanisivik Airport 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 at Nanisivik Airport during 2017, the Sun is continuously above the horizon for 3.1 months, rising at 2:06 AM on May 4, and not setting again until 1:18 AM on August 8.
In the winter at Nanisivik Airport during 2017, the Sun is continuously below the horizon for 2.5 months, setting at 1:01 PM on November 11, and not rising again until 12:25 PM on January 29.
Hours of Daylight and Twilight
Daylight saving time (DST) is observed at Nanisivik Airport during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
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 Nanisivik 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
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 Nanisivik Airport does not vary significantly over the course of the year, remaining within 0.3 miles per hour of 4.5 miles per hour throughout.
Average Wind Speed
The predominant average hourly wind direction at Nanisivik Airport varies throughout the year.
The wind is most often from the east for 2.3 months, from September 10 to November 18 and for 3.3 weeks, from December 4 to December 27, with a peak percentage of 31% on October 5. The wind is most often from the north for 2.3 weeks, from November 18 to December 4 and for 8.4 months, from December 27 to September 10, with a peak percentage of 27% on November 23.
Nanisivik 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 1.6 months, from July 23 to September 11, with an average temperature above 33°F. The day of the year with the warmest water is August 17, with an average temperature of 34°F.
The time of year with cooler water lasts for 7.4 months, from October 25 to June 6, with an average temperature below 30°F. The day of the year with the coolest water is April 26, with an average temperature of 29°F.
Average Water Temperature
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 2.4 months, from May 10 to July 21, with an average daily incident shortwave energy per square meter above 4.8 kWh. The brightest day of the year is June 8, with an average of 6.0 kWh.
The darker period of the year lasts for 5.8 months, from September 23 to March 18, with an average daily incident shortwave energy per square meter below 1.3 kWh. The darkest day of the year is January 1, with an average of 0.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Nanisivik Airport are 72.981 deg latitude, -84.612 deg longitude, and 1,680 ft elevation.
The topography within 2 miles of Nanisivik Airport contains significant variations in elevation, with a maximum elevation change of 610 feet and an average elevation above sea level of 1,827 feet. Within 10 miles contains significant variations in elevation (2,500 feet). Within 50 miles contains large variations in elevation (4,373 feet).
The area within 2 miles of Nanisivik Airport is covered by sparse vegetation (50%) and bare soil (50%), within 10 miles by sparse vegetation (41%) and bare soil (31%), and within 50 miles by sparse vegetation (35%) and bare soil (29%).
This report illustrates the typical weather at Nanisivik 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
Nanisivik 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.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
In this case, the only station close and reliable enough to use as a fallback is Arctic Bay.
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.