Average Weather in May in Hälleforsnäs Sweden
Daily high temperatures increase by 8°F, from 55°F to 64°F, rarely falling below 45°F or exceeding 75°F.
Daily low temperatures increase by 9°F, from 36°F to 45°F, rarely falling below 29°F or exceeding 52°F.
For reference, on July 21, the hottest day of the year, temperatures in Hälleforsnäs typically range from 54°F to 72°F, while on February 8, the coldest day of the year, they range from 20°F to 30°F.
Average High and Low Temperature in May
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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.
Average Hourly Temperature in May
Haines, Alaska, United States (4,121 miles away); Nelson, Canada (4,497 miles); and Upper Bear Creek, Colorado, United States (4,856 miles) are the far-away foreign places with temperatures most similar to Hälleforsnäs (view comparison).
The month of May in Hälleforsnäs experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 54% to 47%.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 53% of the time.
For reference, on November 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 78%, while on July 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 57%.
Cloud Cover Categories in May
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Hälleforsnäs, the chance of a wet day over the course of May is gradually increasing, starting the month at 23% and ending it at 26%.
For reference, the year's highest daily chance of a wet day is 33% on July 5, and its lowest chance is 17% on March 17.
Over the course of May in Hälleforsnäs, the chance of a day with only rain increases from 21% to 26%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Hälleforsnäs is gradually increasing, starting the month at 1.4 inches, when it rarely exceeds 2.4 inches or falls below 0.6 inches, and ending the month at 1.9 inches, when it rarely exceeds 3.1 inches or falls below 0.9 inches.
Average Monthly Rainfall in May
Over the course of May in Hälleforsnäs, the length of the day is very rapidly increasing. From the start to the end of the month, the length of the day increases by 2 hours, 8 minutes, implying an average daily increase of 4 minutes, 17 seconds, and weekly increase of 29 minutes, 57 seconds.
The shortest day of the month is May 1, with 15 hours, 50 minutes of daylight and the longest day is May 31, with 17 hours, 59 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Hälleforsnäs is 4:56 AM on May 1 and the earliest sunrise is 1 hour, 4 minutes earlier at 3:52 AM on May 31.
The earliest sunset is 8:47 PM on May 1 and the latest sunset is 1 hour, 5 minutes later at 9:51 PM on May 31.
Daylight saving time is observed in Hälleforsnäs during 2018, but it neither starts nor ends during May, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 3:38 AM and sets 18 hours, 34 minutes later, at 10:12 PM, while on December 21, the shortest day of the year, it rises at 8:48 AM and sets 6 hours, 8 minutes later, at 2:56 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Hälleforsnäs is essentially constant during May, remaining around 0% throughout.
For reference, on July 30, the muggiest day of the year, there are muggy conditions 1% of the time, while on September 16, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in May
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Hälleforsnäs is essentially constant during May, remaining within 0.1 miles per hour of 5.3 miles per hour throughout.
For reference, on January 6, the windiest day of the year, the daily average wind speed is 5.9 miles per hour, while on July 19, the calmest day of the year, the daily average wind speed is 5.0 miles per hour.
Average Wind Speed in May
Wind Direction in May
Hälleforsnäs 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 in Hälleforsnäs is rapidly increasing during May, rising by 9°F, from 40°F to 49°F, over the course of the month.
Average Water Temperature in May
The growing season in Hälleforsnäs typically lasts for 4.7 months (144 days), from around May 9 to around September 29, rarely starting before April 20 or after May 28, and rarely ending before September 11 or after October 20.
During May in Hälleforsnäs, the chance that a given day is within the growing season is very rapidly increasing rising from 30% to 93% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Hälleforsnäs are gradually increasing during May, increasing by 138°F, from 35°F to 173°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Hälleforsnäs is increasing during May, rising by 1.2 kWh, from 4.8 kWh to 5.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Hälleforsnäs are 59.152 deg latitude, 16.497 deg longitude, and 249 ft elevation.
The topography within 2 miles of Hälleforsnäs contains only modest variations in elevation, with a maximum elevation change of 200 feet and an average elevation above sea level of 248 feet. Within 10 miles also contains only modest variations in elevation (318 feet). Within 50 miles contains only modest variations in elevation (709 feet).
The area within 2 miles of Hälleforsnäs is covered by trees (78%), within 10 miles by trees (67%) and cropland (24%), and within 50 miles by trees (51%) and cropland (26%).
This report illustrates the typical weather in Hälleforsnäs year round, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Hälleforsnäs.
For each station, the records are corrected for the elevation difference between that station and Hälleforsnäs 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 Hälleforsnäs is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Hälleforsnäs and a given station.
The stations contributing to this reconstruction are: Stockholm Skavsta Airport (36%, 47 kilometers, southeast); Stockholm-Västerås Airport (33%, 49 kilometers, north); Tullinge (16%, 81 kilometers, east); and Örebro Airport (15%, 84 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .