Average Weather in April in Virolahti Finland
Daily high temperatures increase by 11°F, from 39°F to 50°F, rarely falling below 31°F or exceeding 61°F.
Daily low temperatures increase by 9°F, from 27°F to 36°F, rarely falling below 17°F or exceeding 43°F.
For reference, on July 24, the hottest day of the year, temperatures in Virolahti typically range from 57°F to 70°F, while on February 7, the coldest day of the year, they range from 18°F to 26°F.
Average High and Low Temperature in April
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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 April
The month of April in Virolahti experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 66% to 56%.
The clearest day of the month is April 30, with clear, mostly clear, or partly cloudy conditions 44% of the time.
For reference, on January 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 80%, while on July 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.
Cloud Cover Categories in April
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 Virolahti, the chance of a wet day over the course of April is essentially constant, remaining around 21% throughout.
For reference, the year's highest daily chance of a wet day is 35% on October 22, and its lowest chance is 18% on February 26.
Over the course of April in Virolahti, the chance of a day with only rain increases from 14% to 18%, the chance of a day with mixed snow and rain decreases from 5% to 1%, and the chance of a day with only snow decreases from 3% to 1%.
Probability of Precipitation in April
The average sliding 31-day rainfall during April in Virolahti is gradually increasing, starting the month at 0.9 inches, when it rarely exceeds 1.7 inches or falls below 0.2 inches, and ending the month at 1.3 inches, when it rarely exceeds 2.6 inches or falls below 0.4 inches.
Average Monthly Rainfall in April
The average sliding 31-day liquid-equivalent snowfall during April in Virolahti is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.6 inches or falling below -0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in April
Over the course of April in Virolahti, 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, 40 minutes, implying an average daily increase of 5 minutes, 31 seconds, and weekly increase of 38 minutes, 37 seconds.
The shortest day of the month is April 1, with 13 hours, 21 minutes of daylight and the longest day is April 30, with 16 hours, 1 minute of daylight.
Hours of Daylight and Twilight in April
The latest sunrise of the month in Virolahti is 6:33 AM on April 1 and the earliest sunrise is 1 hour, 27 minutes earlier at 5:07 AM on April 30.
The earliest sunset is 7:54 PM on April 1 and the latest sunset is 1 hour, 14 minutes later at 9:07 PM on April 30.
Daylight saving time is observed in Virolahti during 2021, but it neither starts nor ends during April, 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 19 hours, 4 minutes later, at 10:43 PM, while on December 21, the shortest day of the year, it rises at 9:16 AM and sets 5 hours, 42 minutes later, at 2:58 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in April
The figure below presents a compact representation of key lunar data for April 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. 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.
Moon Rise, Set & Phases in April
The chance that a given day will be muggy in Virolahti is essentially constant during April, remaining around 0% throughout.
For reference, on July 28, the muggiest day of the year, there are muggy conditions 2% of the time, while on September 10, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in April
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Virolahti is gradually decreasing during April, decreasing from 8.0 miles per hour to 7.3 miles per hour over the course of the month.
For reference, on December 12, the windiest day of the year, the daily average wind speed is 10.8 miles per hour, while on July 3, the calmest day of the year, the daily average wind speed is 6.8 miles per hour.
Average Wind Speed in April
The wind direction in Virolahti during April is predominantly out of the south from April 1 to April 13 and the west from April 13 to April 30.
Wind Direction in April
Virolahti 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 Virolahti is increasing during April, rising by 5°F, from 33°F to 38°F, over the course of the month.
Average Water Temperature in April
The growing season in Virolahti typically lasts for 5.5 months (170 days), from around May 2 to around October 19, rarely starting before April 15 or after May 20, and rarely ending before September 30 or after November 7.
The month of April in Virolahti is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season rapidly increasing from 0% to 43% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in April
The average accumulated growing degree days in Virolahti are essentially constant during April, remaining within 6°F of 6°F throughout.
Growing Degree Days in April
The average daily incident shortwave solar energy in Virolahti is rapidly increasing during April, rising by 1.6 kWh, from 3.0 kWh to 4.6 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in April
For the purposes of this report, the geographical coordinates of Virolahti are 60.517 deg latitude, 27.683 deg longitude, and 26 ft elevation.
The topography within 2 miles of Virolahti contains only modest variations in elevation, with a maximum elevation change of 161 feet and an average elevation above sea level of 30 feet. Within 10 miles also contains only modest variations in elevation (220 feet). Within 50 miles contains only modest variations in elevation (604 feet).
The area within 2 miles of Virolahti is covered by trees (69%) and cropland (19%), within 10 miles by water (45%) and trees (44%), and within 50 miles by water (49%) and trees (41%).
This report illustrates the typical weather in Virolahti, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Virolahti.
For each station, the records are corrected for the elevation difference between that station and Virolahti 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 Virolahti is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Virolahti and a given station.
Time zones for airports and weather stations are provided by AskGeo.com .