Average Weather at Stockholm Arlanda Airport Sweden
At Stockholm Arlanda Airport, the summers are comfortable and partly cloudy and the winters are long, freezing, dry, and mostly cloudy. Over the course of the year, the temperature typically varies from 21°F to 72°F and is rarely below 4°F or above 81°F.
The warm season lasts for 3.1 months, from June 1 to September 4, with an average daily high temperature above 64°F. The hottest day of the year is July 22, with an average high of 72°F and low of 55°F.
The cold season lasts for 4.1 months, from November 17 to March 19, with an average daily high temperature below 39°F. The coldest day of the year is February 10, with an average low of 21°F and high of 31°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 Stockholm Arlanda 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 Stockholm Arlanda Airport begins around April 15 and lasts for 5.7 months, ending around October 6. On July 7, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 57% of the time, and overcast or mostly cloudy 43% of the time.
The cloudier part of the year begins around October 6 and lasts for 6.3 months, ending around April 15. On November 27, the cloudiest day of the year, the sky is overcast or mostly cloudy 76% of the time, and clear, mostly clear, or partly cloudy 24% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Stockholm Arlanda Airport varies throughout the year.
The wetter season lasts 7.2 months, from May 30 to January 4, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 30% on August 13.
The drier season lasts 4.8 months, from January 4 to May 30. The smallest chance of a wet day is 16% on March 11.
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 throughout the year is rain alone, with a peak probability of 30% on August 13.
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. Stockholm Arlanda Airport experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from February 25 to February 8, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 27, with an average total accumulation of 2.3 inches.
The rainless period of the year lasts for 2.4 weeks, from February 8 to February 25. The least rain falls around February 16, with an average total accumulation of 0.5 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. Stockholm Arlanda Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.5 months, from November 4 to April 18, 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 23, with an average total liquid-equivalent accumulation of 0.4 inches.
The snowless period of the year lasts for 6.5 months, from April 18 to November 4. The least snow falls around July 25, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Stockholm Arlanda Airport varies extremely over the course of the year. In 2017, the shortest day is December 21, with 5 hours, 59 minutes of daylight; the longest day is June 21, with 18 hours, 44 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 3:27 AM on June 19, and the latest sunrise is 5 hours, 21 minutes later at 8:48 AM on December 27. The earliest sunset is at 2:44 PM on December 16, and the latest sunset is 7 hours, 28 minutes later at 10:12 PM on June 23.
Daylight saving time (DST) is observed at Stockholm Arlanda Airport during 2017, starting in the spring on March 26, lasting 7.1 months, and ending in the fall on October 29.
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 Stockholm Arlanda 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, staying within 1% of 1% 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 Stockholm Arlanda Airport does not vary significantly over the course of the year, remaining within 0.3 miles per hour of 3.1 miles per hour throughout.
Average Wind Speed
The predominant average hourly wind direction at Stockholm Arlanda Airport varies throughout the year.
The wind is most often from the south for 5.5 months, from March 25 to September 10 and for 1.0 weeks, from September 21 to September 28, with a peak percentage of 35% on September 25. The wind is most often from the west for 1.6 weeks, from September 10 to September 21 and for 5.9 months, from September 28 to March 25, with a peak percentage of 34% on September 18.
Stockholm Arlanda 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 significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.5 months, from July 1 to September 16, with an average temperature above 56°F. The day of the year with the warmest water is August 7, with an average temperature of 62°F.
The time of year with cooler water lasts for 4.6 months, from December 14 to May 2, with an average temperature below 39°F. The day of the year with the coolest water is March 1, with an average temperature of 34°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 3.2 months, from May 4 to August 10, with an average daily incident shortwave energy per square meter above 5.0 kWh. The brightest day of the year is June 21, with an average of 6.2 kWh.
The darker period of the year lasts for 4.4 months, from October 15 to February 27, with an average daily incident shortwave energy per square meter below 1.4 kWh. The darkest day of the year is December 20, with an average of 0.2 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Stockholm Arlanda Airport are 59.652 deg latitude, 17.931 deg longitude, and 128 ft elevation.
The topography within 2 miles of Stockholm Arlanda Airport contains only modest variations in elevation, with a maximum elevation change of 180 feet and an average elevation above sea level of 127 feet. Within 10 miles also contains only modest variations in elevation (223 feet). Within 50 miles contains only modest variations in elevation (495 feet).
The area within 2 miles of Stockholm Arlanda Airport is covered by artificial surfaces (46%), trees (40%), and cropland (13%), within 10 miles by trees (45%) and cropland (40%), and within 50 miles by trees (46%) and water (26%).
This report illustrates the typical weather at Stockholm Arlanda 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
Stockholm Arlanda 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 include but are not limited to Stockholm-Bromma Airport, Uppsala, Tullinge, Stockholm-Västerås Airport, Gavle-Sandviken Airport, Stockholm Skavsta Airport, Norrköping Airport, and Mariehamn Airport.
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.