Average Weather in Ferlach Austria
In Ferlach, the summers are comfortable and wet, the winters are freezing and dry, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 20°F to 78°F and is rarely below 8°F or above 88°F.
Based on the tourism score, the best time of year to visit Ferlach for warm-weather activities is from late June to late August.
The warm season lasts for 3.5 months, from May 25 to September 11, with an average daily high temperature above 69°F. The hottest day of the year is August 3, with an average high of 78°F and low of 56°F.
The cold season lasts for 3.1 months, from November 20 to February 23, with an average daily high temperature below 41°F. The coldest day of the year is January 13, with an average low of 20°F and high of 32°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
In Ferlach, 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 Ferlach begins around June 14 and lasts for 3.3 months, ending around September 23. On July 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 65% of the time, and overcast or mostly cloudy 35% of the time.
The cloudier part of the year begins around September 23 and lasts for 8.7 months, ending around June 14. On November 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 62% of the time, and clear, mostly clear, or partly cloudy 38% of the time.
Cloud Cover Categories
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. The chance of wet days in Ferlach varies throughout the year.
The wetter season lasts 5.7 months, from April 18 to October 10, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 41% on June 12.
The drier season lasts 6.3 months, from October 10 to April 18. The smallest chance of a wet day is 14% on January 20.
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 in Ferlach changes throughout the year.
Rain alone is the most common for 11 months, from January 30 to December 29. The highest chance of a day with rain alone is 41% on June 12.
Snow alone is the most common for 1.1 months, from December 29 to January 30. The highest chance of a day with snow alone is 7% on January 1.
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. Ferlach experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Ferlach. The most rain falls during the 31 days centered around August 29, with an average total accumulation of 3.9 inches.
The least rain falls around January 20, with an average total accumulation of 0.6 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. Ferlach experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.7 months, from October 26 to April 15, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 22, with an average total liquid-equivalent accumulation of 0.7 inches.
The snowless period of the year lasts for 6.3 months, from April 15 to October 26. The least snow falls around July 27, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Ferlach varies significantly over the course of the year. In 2021, the shortest day is December 21, with 8 hours, 34 minutes of daylight; the longest day is June 21, with 15 hours, 50 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:09 AM on June 16, and the latest sunrise is 2 hours, 38 minutes later at 7:46 AM on January 1. The earliest sunset is at 4:15 PM on December 11, and the latest sunset is 4 hours, 45 minutes later at 8:59 PM on June 26.
Daylight saving time (DST) is observed in Ferlach 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
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 perceived humidity level in Ferlach, 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Ferlach experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.1 months, from November 16 to May 20, with average wind speeds of more than 3.7 miles per hour. The windiest day of the year is February 1, with an average hourly wind speed of 4.4 miles per hour.
The calmer time of year lasts for 5.9 months, from May 20 to November 16. The calmest day of the year is August 9, with an average hourly wind speed of 3.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Ferlach varies throughout the year.
The wind is most often from the north for 1.1 months, from January 30 to March 2; for 2.7 weeks, from April 6 to April 25; and for 2.9 months, from June 23 to September 20, with a peak percentage of 37% on February 3. The wind is most often from the west for 1.1 months, from March 2 to April 6; for 2.0 weeks, from April 25 to May 9; and for 4.3 months, from September 20 to January 30, with a peak percentage of 34% on March 12. The wind is most often from the south for 1.5 months, from May 9 to June 23, with a peak percentage of 30% on May 27.
Best Time of Year to Visit
To characterize how pleasant the weather is in Ferlach 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 Ferlach for general outdoor tourist activities is from late June to late August, with a peak score in the first week of August.
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 Ferlach for hot-weather activities is from early July to mid August, with a peak score in the last week of July.
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.
The growing season in Ferlach typically lasts for 6.0 months (182 days), from around April 19 to around October 18, rarely starting before March 31 or after May 9, and rarely ending before September 29 or after November 5.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Ferlach should appear around April 26, only rarely appearing before April 12 or after May 10.
Growing Degree Days
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 3.5 months, from May 1 to August 18, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is July 10, with an average of 6.5 kWh.
The darker period of the year lasts for 3.4 months, from October 28 to February 10, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest day of the year is December 16, with an average of 1.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Ferlach are 46.527 deg latitude, 14.302 deg longitude, and 1,519 ft elevation.
The topography within 2 miles of Ferlach contains large variations in elevation, with a maximum elevation change of 3,064 feet and an average elevation above sea level of 1,783 feet. Within 10 miles contains large variations in elevation (5,968 feet). Within 50 miles also contains extreme variations in elevation (9,131 feet).
The area within 2 miles of Ferlach is covered by trees (64%), cropland (18%), and artificial surfaces (13%), within 10 miles by trees (63%) and cropland (15%), and within 50 miles by trees (66%) and cropland (14%).
This report illustrates the typical weather in Ferlach, 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 Ferlach.
For each station, the records are corrected for the elevation difference between that station and Ferlach 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 Ferlach is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ferlach and a given station.
The stations contributing to this reconstruction are: Klagenfurt Airport (75%, 14 kilometers, north); Ljubljana Jože Pučnik Airport (18%, 36 kilometers, south); and Tarvisio (8%, 55 kilometers, west).
Time zones for airports and weather stations are provided by AskGeo.com .