Average Weather at Åre Östersund Airport Sweden

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At Åre Östersund Airport, the summers are cool and wet; the winters are long, freezing, and snowy; and it is mostly cloudy year round. Over the course of the year, the temperature typically varies from 15°F to 66°F and is rarely below -5°F or above 76°F.

The warm season lasts for 3.1 months, from June 1 to September 3, with an average daily high temperature above 57°F. The hottest day of the year is July 21, with an average high of 66°F and low of 52°F.

The cold season lasts for 4.0 months, from November 18 to March 17, with an average daily high temperature below 34°F. The coldest day of the year is January 16, with an average low of 15°F and high of 26°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.

At Åre Östersund 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 Åre Östersund Airport begins around April 7 and lasts for 5.0 months, ending around September 6. On June 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 48% of the time, and overcast or mostly cloudy 52% of the time.

The cloudier part of the year begins around September 6 and lasts for 7.0 months, ending around April 7. On January 25, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% 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 Åre Östersund Airport varies throughout the year.

The wetter season lasts 5.1 months, from May 19 to October 21, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 42% on July 4.

The drier season lasts 6.9 months, from October 21 to May 19. The smallest chance of a wet day is 18% on February 23.

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 Åre Östersund Airport changes throughout the year.

Rain alone is the most common for 8.2 months, from March 25 to November 29. The highest chance of a day with rain alone is 42% on July 4.

Snow alone is the most common for 3.8 months, from November 29 to March 25. The highest chance of a day with snow alone is 16% on January 23.

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. Åre Östersund Airport experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.4 months, from March 28 to December 10, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 13, with an average total accumulation of 3.8 inches.

The rainless period of the year lasts for 3.6 months, from December 10 to March 28. The least rain falls around February 11, with an average total accumulation of 0.2 inches.

Snowfall

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. Åre Östersund Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 7.1 months, from October 5 to May 9, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 10, with an average total liquid-equivalent accumulation of 0.9 inches.

The snowless period of the year lasts for 4.9 months, from May 9 to October 5. The least snow falls around July 20, with an average total liquid-equivalent accumulation of 0.0 inches.

The length of the day at Åre Östersund Airport varies extremely over the course of the year. In 2017, the shortest day is December 21, with 4 hours, 37 minutes of daylight; the longest day is June 21, with 20 hours, 27 minutes of daylight.

The earliest sunrise is at 2:50 AM on June 19, and the latest sunrise is 6 hours, 52 minutes later at 9:42 AM on December 25. The earliest sunset is at 2:17 PM on December 17, and the latest sunset is 8 hours, 59 minutes later at 11:17 PM on June 22.

Daylight saving time (DST) is observed at Åre Östersund Airport during 2017, starting in the spring on March 26, lasting 7.1 months, and ending in the fall on October 29.

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 Åre Östersund 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.

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 predominant average hourly wind direction at Åre Östersund Airport varies throughout the year.

The wind is most often from the north for 2.9 weeks, from June 11 to July 1, with a peak percentage of 29% on June 15. The wind is most often from the south for 3.6 months, from July 1 to October 19, with a peak percentage of 40% on September 25. The wind is most often from the west for 7.7 months, from October 19 to June 11, with a peak percentage of 43% on January 1.

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 3.0 months, from May 6 to August 7, with an average daily incident shortwave energy per square meter above 4.6 kWh. The brightest day of the year is June 13, with an average of 5.7 kWh.

The darker period of the year lasts for 4.6 months, from October 11 to February 27, with an average daily incident shortwave energy per square meter below 1.2 kWh. The darkest day of the year is December 23, with an average of 0.1 kWh.

For the purposes of this report, the geographical coordinates of Åre Östersund Airport are 63.193 deg latitude, 14.504 deg longitude, and 981 ft elevation.

The topography within 2 miles of Åre Östersund Airport contains only modest variations in elevation, with a maximum elevation change of 420 feet and an average elevation above sea level of 1,101 feet. Within 10 miles contains only modest variations in elevation (725 feet). Within 50 miles contains significant variations in elevation (4,465 feet).

The area within 2 miles of Åre Östersund Airport is covered by trees (57%), cropland (15%), water (14%), and artificial surfaces (13%), within 10 miles by trees (51%) and water (33%), and within 50 miles by trees (75%).

This report illustrates the typical weather at Åre Östersund 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

Åre Östersund 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.

The stations on which we may fall back are Sundsvall-Timrå Airport; Røros Airport; Höga Kusten Airport; and Trondheim Airport, Værnes.

Other Data

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.