Summer Weather at Söderhamn Airport Sweden

Daily high temperatures are around 65°F, rarely falling below 52°F or exceeding 78°F. The highest daily average high temperature is 70°F on July 21.

Daily low temperatures increase by 4°F, from 43°F to 47°F, rarely falling below 36°F or exceeding 58°F. The highest daily average low temperature is 52°F on July 24.

For reference, on July 21, the hottest day of the year, temperatures at Söderhamn Airport typically range from 52°F to 70°F, while on January 16, the coldest day of the year, they range from 17°F to 31°F.

The figure below shows you a compact characterization of the hourly average summer temperatures. 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.

Haines, United States (3,987 miles away) is the far-away foreign place with temperatures most similar to Söderhamn Airport (view comparison).

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The summer at Söderhamn Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 49% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 45% on July 17.

The clearest day of the summer is July 17, with clear, mostly clear, or partly cloudy conditions 55% of the time.

For reference, on January 25, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 71%, while on July 16, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 55%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Söderhamn Airport, the chance of a wet day over the course of the summer is rapidly increasing, starting the season at 24% and ending it at 31%.

For reference, the year's highest daily chance of a wet day is 33% on August 23, and its lowest chance is 15% on March 1.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the summer at Söderhamn Airport is gradually increasing, starting the season at 2.0 inches, when it rarely exceeds 3.4 inches or falls below 0.7 inches, and ending the season at 2.4 inches, when it rarely exceeds 4.4 inches or falls below 0.8 inches.

The highest average 31-day accumulation is 2.6 inches on August 16.

Over the course of the summer at Söderhamn Airport, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 4 hours, 28 minutes, implying an average daily decrease of 2 minutes, 56 seconds, and weekly decrease of 20 minutes, 35 seconds.

The shortest day of the summer is August 31, with 14 hours, 19 minutes of daylight and the longest day is June 20, with 19 hours, 24 minutes of daylight.

The earliest sunrise of the summer at Söderhamn Airport is 3:11 AM on June 19 and the latest sunrise is 2 hours, 30 minutes later at 5:41 AM on August 31.

The latest sunset is 10:35 PM on June 22 and the earliest sunset is 2 hours, 35 minutes earlier at 8:00 PM on August 31.

Daylight saving time is observed at Söderhamn Airport during 2024, but it neither starts nor ends during the summer, so the entire season is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 3:11 AM and sets 19 hours, 24 minutes later, at 10:35 PM, while on December 21, the shortest day of the year, it rises at 9:06 AM and sets 5 hours, 26 minutes later, at 2:32 PM.

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.

The figure below presents a compact representation of key lunar data for the summer of 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.

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 at Söderhamn Airport is essentially constant during the summer, remaining within 1% of 1% throughout.

The highest chance of a muggy day during the summer is 3% on July 30.

For reference, on July 29, the muggiest day of the year, there are muggy conditions 3% of the time, while on September 20, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Söderhamn Airport is increasing during the summer, increasing from 6.0 miles per hour to 7.1 miles per hour over the course of the season.

For reference, on January 1, the windiest day of the year, the daily average wind speed is 9.0 miles per hour, while on June 13, the calmest day of the year, the daily average wind speed is 5.9 miles per hour.

The lowest daily average wind speed during the summer is 5.9 miles per hour on June 21.

The wind direction at Söderhamn Airport during the summer is predominantly out of the north from June 1 to June 16 and the south from June 16 to August 31.

Söderhamn 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 surface water temperature at Söderhamn Airport is very rapidly increasing during the summer, rising by 13°F, from 46°F to 58°F, over the course of the season.

The highest average surface water temperature during the summer is 61°F on August 6.

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 at Söderhamn Airport typically lasts for 4.5 months (137 days), from around May 14 to around September 28, rarely starting before April 28 or after June 1, and rarely ending before September 11 or after October 16.

The summer at Söderhamn Airport is very likely fully within the growing season, with the chance that a given day is in the growing season reaching a high of 100% on July 24.

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 at Söderhamn Airport are rapidly increasing during the summer, increasing by 849°F, from 115°F to 964°F, over the course of the season.

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 at Söderhamn Airport is very rapidly decreasing during the summer, falling by 2.2 kWh, from 5.9 kWh to 3.6 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the summer is 6.0 kWh on June 22.

For the purposes of this report, the geographical coordinates of Söderhamn Airport are 61.261 deg latitude, 17.099 deg longitude, and 92 ft elevation.

The topography within 2 miles of Söderhamn Airport contains only modest variations in elevation, with a maximum elevation change of 230 feet and an average elevation above sea level of 110 feet. Within 10 miles contains only modest variations in elevation (804 feet). Within 50 miles contains significant variations in elevation (1,683 feet).

The area within 2 miles of Söderhamn Airport is covered by trees (76%) and artificial surfaces (22%), within 10 miles by trees (51%) and water (39%), and within 50 miles by trees (47%) and water (47%).