February Weather in Shirone Japan
Daily high temperatures increase by 4°F, from 40°F to 44°F, rarely falling below 34°F or exceeding 53°F.
Daily low temperatures increase by 2°F, from 32°F to 34°F, rarely falling below 27°F or exceeding 41°F.
For reference, on August 7, the hottest day of the year, temperatures in Shirone typically range from 75°F to 86°F, while on January 28, the coldest day of the year, they range from 32°F to 40°F.
Average High and Low Temperature in February in Shirone
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on February. 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 February in Shirone
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 month of February in Shirone experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 79% to 66%.
The clearest day of the month is February 28, with clear, mostly clear, or partly cloudy conditions 34% of the time.
For reference, on January 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 80%, while on October 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.
Cloud Cover Categories in February in Shirone
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 Shirone, the chance of a wet day over the course of February is very rapidly decreasing, starting the month at 49% and ending it at 40%.
For reference, the year's highest daily chance of a wet day is 61% on December 9, and its lowest chance is 26% on May 24.
Over the course of February in Shirone, the chance of a day with only rain remains an essentially constant 36% throughout, the chance of a day with mixed snow and rain decreases from 9% to 3%, and the chance of a day with only snow remains an essentially constant 2% throughout.
Probability of Precipitation in February in Shirone
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during February in Shirone is gradually decreasing, starting the month at 3.3 inches, when it rarely exceeds 5.1 inches or falls below 1.9 inches, and ending the month at 3.0 inches, when it rarely exceeds 4.4 inches or falls below 1.9 inches.
The lowest average 31-day accumulation is 3.0 inches on February 22.
Average Monthly Rainfall in February in Shirone
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. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during February in Shirone is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 1.0 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in February in Shirone
Over the course of February in Shirone, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1 hour, 0 minutes, implying an average daily increase of 2 minutes, 13 seconds, and weekly increase of 15 minutes, 32 seconds.
The shortest day of the month is February 1, with 10 hours, 19 minutes of daylight and the longest day is February 28, with 11 hours, 19 minutes of daylight.
Hours of Daylight and Twilight in February in Shirone
The latest sunrise of the month in Shirone is 6:48 AM on February 1 and the earliest sunrise is 31 minutes earlier at 6:17 AM on February 28.
The earliest sunset is 5:07 PM on February 1 and the latest sunset is 29 minutes later at 5:36 PM on February 28.
Daylight saving time is not observed in Shirone during 2021.
For reference, on June 21, the longest day of the year, the Sun rises at 4:22 AM and sets 14 hours, 47 minutes later, at 7:09 PM, while on December 21, the shortest day of the year, it rises at 6:55 AM and sets 9 hours, 33 minutes later, at 4:28 PM.
Sunrise & Sunset with Twilight in February in Shirone
The figure below presents a compact representation of key lunar data for February 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 February in Shirone
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 in Shirone is essentially constant during February, remaining around 0% throughout.
For reference, on August 5, the muggiest day of the year, there are muggy conditions 94% of the time, while on November 10, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in February in Shirone
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Shirone is gradually decreasing during February, decreasing from 12.0 miles per hour to 11.1 miles per hour over the course of the month.
For reference, on February 2, the windiest day of the year, the daily average wind speed is 12.0 miles per hour, while on July 29, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.
The highest daily average wind speed during February is 12.0 miles per hour on February 2.
Average Wind Speed in February in Shirone
The hourly average wind direction in Shirone throughout February is predominantly from the west, with a peak proportion of 63% on February 1.
Wind Direction in February in Shirone
Shirone 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 Shirone is gradually decreasing during February, falling by 2°F, from 51°F to 49°F, over the course of the month.
Average Water Temperature in February in Shirone
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 Shirone typically lasts for 8.8 months (270 days), from around March 19 to around December 14, rarely starting before March 2 or after April 6, and rarely ending before November 22 or after January 2.
The month of February in Shirone is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually increasing from 0% to 8% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in February in Shirone
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
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 in Shirone are essentially constant during February, remaining within 1°F of 2°F throughout.
Growing Degree Days in February in Shirone
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 in Shirone is increasing during February, rising by 1.0 kWh, from 1.9 kWh to 2.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in February in Shirone
For the purposes of this report, the geographical coordinates of Shirone are 37.764 deg latitude, 139.022 deg longitude, and -3 ft elevation.
The topography within 2 miles of Shirone is essentially flat, with a maximum elevation change of 52 feet and an average elevation above sea level of -2 feet. Within 10 miles is essentially flat (1,457 feet). Within 50 miles contains very significant variations in elevation (7,024 feet).
The area within 2 miles of Shirone is covered by cropland (95%), within 10 miles by cropland (71%) and trees (18%), and within 50 miles by water (50%) and trees (37%).
This report illustrates the typical weather in Shirone, 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 is only a single weather station, Niigata Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Shirone.
At a distance of 22 kilometers from Shirone, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Shirone according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
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.
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.