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Average Weather in Södertälje Sweden

In Södertälje, 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 20°F to 71°F and is rarely below 2°F or above 81°F.

Based on the tourism score, the best time of year to visit Södertälje for warm-weather activities is from late June to mid August.

Climate Summary

freezingvery coldcoldcoolcomfortablecoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow57%57%25%25%overcastclearprecipitation: 2.3 inprecipitation: 2.3 in0.8 in0.8 inmuggy: 1%muggy: 1%0%0%drydrytourism score: 6.6tourism score: 6.60.00.0
Click on each chart for more information.

Temperature

The warm season lasts for 3.1 months, from June 1 to September 4, with an average daily high temperature above 63°F. The hottest day of the year is July 21, with an average high of 71°F and low of 53°F.

The cold season lasts for 4.0 months, from November 18 to March 18, with an average daily high temperature below 39°F. The coldest day of the year is February 9, with an average low of 20°F and high of 31°F.

Average High and Low Temperature

Average High and Low Temperature in SödertäljewarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 931°FFeb 931°FJul 2171°FJul 2171°F20°F20°F53°F53°FJun 163°FJun 163°FSep 463°FSep 463°FNov 1839°FNov 1839°FMar 1839°FMar 1839°F44°F44°F47°F47°F30°F30°F25°F25°FNowNow
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.

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

Average Hourly Temperature in SödertäljeJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolcomfortablefreezing
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.

Haines, Alaska, United States (4,129 miles away) and Upper Bear Creek, Colorado, United States (4,881 miles) are the far-away foreign places with temperatures most similar to Södertälje (view comparison).

Clouds

In Södertälje, 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 Södertälje begins around April 16 and lasts for 5.7 months, ending around October 7. On July 11, 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 7 and lasts for 6.3 months, ending around April 16. On November 27, the cloudiest day of the year, the sky is overcast or mostly cloudy 75% of the time, and clear, mostly clear, or partly cloudy 25% of the time.

Cloud Cover Categories

Cloud Cover Categories in SödertäljeclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1157%Jul 1157%Nov 2725%Nov 2725%Apr 1641%Apr 1641%Oct 741%Oct 741%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.

Precipitation

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

The wetter season lasts 7.0 months, from June 1 to January 2, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 29% on November 13.

The drier season lasts 5.0 months, from January 2 to June 1. The smallest chance of a wet day is 17% 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 29% on August 13.

Daily Chance of Precipitation

Daily Chance of Precipitation in SödertäljewetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 1329%Nov 1329%Mar 1117%Mar 1117%Jan 123%Jan 123%Jun 123%Jun 123%Jan 223%Jan 223%NowNowrainsnow
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).

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. Södertälje experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from March 3 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 July 11, with an average total accumulation of 2.3 inches.

The rainless period of the year lasts for 3.3 weeks, from February 8 to March 3. The least rain falls around February 16, with an average total accumulation of 0.5 inches.

Average Monthly Rainfall

Average Monthly Rainfall in SödertäljerainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inJul 112.3 inJul 112.3 inFeb 160.5 inFeb 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 liquid-equivalent snowfall.

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. Södertälje experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.7 months, from November 4 to April 25, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around February 1, with an average total liquid-equivalent accumulation of 0.4 inches.

The snowless period of the year lasts for 6.3 months, from April 25 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

Average Liquid-Equivalent Monthly Snowfall in SödertäljesnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inFeb 10.4 inFeb 10.4 inJul 250.0 inJul 250.0 inNov 40.1 inNov 40.1 inApr 250.1 inApr 250.1 in
The average liquid-equivalent 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.

Sun

The length of the day in Södertälje varies extremely over the course of the year. In 2021, the shortest day is December 21, with 6 hours, 7 minutes of daylight; the longest day is June 21, with 18 hours, 34 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in SödertäljeJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2018 hr, 34 minJun 2118 hr, 34 minJun 2112 hr, 15 minSep 2212 hr, 15 minSep 226 hr, 7 minDec 216 hr, 7 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.

The earliest sunrise is at 3:33 AM on June 18, and the latest sunrise is 5 hours, 12 minutes later at 8:45 AM on December 27. The earliest sunset is at 2:49 PM on December 16, and the latest sunset is 7 hours, 19 minutes later at 10:08 PM on June 23.

Daylight saving time (DST) is observed in Södertälje during 2021, starting in the spring on March 28, lasting 7.1 months, and ending in the fall on October 31.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in SödertäljeJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 183:33 AMJun 183:33 AM10:08 PMJun 2310:08 PMJun 23Dec 162:49 PMDec 162:49 PM8:45 AMDec 278:45 AMDec 27Mar 28DSTMar 28DSTDSTOct 31DSTOct 31daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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

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.

Humidity

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 Södertälje, 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

Humidity Comfort Levels in SödertäljeJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 90%Nov 90%Aug 11%Aug 11%drydrycomfortablecomfortable
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.

Wind

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 Södertälje experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from August 31 to March 29, with average wind speeds of more than 6.6 miles per hour. The windiest day of the year is January 2, with an average hourly wind speed of 7.5 miles per hour.

The calmer time of year lasts for 5.0 months, from March 29 to August 31. The calmest day of the year is July 19, with an average hourly wind speed of 5.7 miles per hour.

Average Wind Speed

Average Wind Speed in SödertäljewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph11 mph11 mphJan 27.5 mphJan 27.5 mphJul 195.7 mphJul 195.7 mphAug 316.6 mphAug 316.6 mphMar 296.6 mphMar 296.6 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the south for 2.5 months, from April 6 to June 22, with a peak percentage of 33% on May 10. The wind is most often from the west for 9.5 months, from June 22 to April 6, with a peak percentage of 42% on January 1.

Wind Direction

Wind Direction in SödertäljeWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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).

Water Temperature

Södertälje 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 June 30 to September 15, with an average temperature above 57°F. The day of the year with the warmest water is August 8, with an average temperature of 63°F.

The time of year with cooler water lasts for 4.5 months, from December 15 to May 1, with an average temperature below 40°F. The day of the year with the coolest water is March 1, with an average temperature of 34°F.

Average Water Temperature

Average Water Temperature in SödertäljewarmcoolJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FAug 863°FAug 863°F34°FMar 134°FMar 1Jun 3057°FJun 3057°FSep 1557°FSep 1557°FDec 1540°FDec 1540°FMay 140°FMay 140°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Södertälje 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 Södertälje for general outdoor tourist activities is from late June to mid August, with a peak score in the third week of July.

Tourism Score

Tourism Score in Södertäljebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.66.60.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturetourism score
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 Södertälje for hot-weather activities is from mid July to early August, with a peak score in the third week of July.

Beach/Pool Score

Beach/Pool Score in SödertäljeJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.92.90.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/pool score
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.

Growing Season

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 Södertälje typically lasts for 4.5 months (136 days), from around May 18 to around October 1, rarely starting before April 30 or after June 5, and rarely ending before September 11 or after October 20.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Södertäljegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 1850%May 1850%Oct 150%Oct 150%Jun 590%Jun 590%Sep 1190%Sep 1190%Apr 3010%Apr 3010%Oct 2010%Oct 2010%0%Feb 190%Feb 19Jul 26100%Jul 26100%NowNowfrigidfreezingvery coldcoldcoolcomfortablewarm
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.

Based on growing degree days alone, the first spring blooms in Södertälje should appear around May 19, only rarely appearing before May 9 or after May 31.

Growing Degree Days

Growing Degree Days in SödertäljeJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°F1,400°F1,400°FMay 1990°FMay 1990°FAug 9900°FAug 9900°FDec 311,277°FDec 311,277°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 4.3 months, from October 16 to February 26, 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

Average Daily Incident Shortwave Solar Energy in SödertäljebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 216.2 kWhJun 216.2 kWhDec 200.2 kWhDec 200.2 kWhMay 45.0 kWhMay 45.0 kWhAug 105.0 kWhAug 105.0 kWhOct 161.4 kWhOct 161.4 kWhFeb 261.4 kWhFeb 261.4 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.

Topography

For the purposes of this report, the geographical coordinates of Södertälje are 59.196 deg latitude, 17.625 deg longitude, and 95 ft elevation.

The topography within 2 miles of Södertälje contains only modest variations in elevation, with a maximum elevation change of 289 feet and an average elevation above sea level of 144 feet. Within 10 miles also contains only modest variations in elevation (348 feet). Within 50 miles also contains only modest variations in elevation (466 feet).

The area within 2 miles of Södertälje is covered by artificial surfaces (72%) and trees (22%), within 10 miles by trees (46%) and water (21%), and within 50 miles by water (38%) and trees (36%).

Data Sources

This report illustrates the typical weather in Södertälje, 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 are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Södertälje.

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

The estimated value at Södertälje is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Södertälje and a given station.

The stations contributing to this reconstruction are: Tullinge (79%, 17 kilometers, east); Stockholm Skavsta Airport (12%, 61 kilometers, southwest); and Stockholm-Västerås Airport (9%, 71 kilometers, northwest).

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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.