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Winter Weather in Toyama Japan

Daily high temperatures decrease by 7°F, from 52°F to 46°F, rarely falling below 34°F or exceeding 62°F. The lowest daily average high temperature is 41°F on January 26.

Daily low temperatures decrease by 7°F, from 42°F to 35°F, rarely falling below 26°F or exceeding 48°F. The lowest daily average low temperature is 32°F on February 3.

For reference, on August 6, the hottest day of the year, temperatures in Toyama typically range from 75°F to 88°F, while on February 3, the coldest day of the year, they range from 32°F to 41°F.

Average High and Low Temperature in the Winter in Toyama

Average High and Low Temperature in the Winter in ToyamaDecJanFeb25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FFallSpringJan 2641°FJan 2641°F32°F32°FDec 152°FDec 152°F42°F42°FFeb 2846°FFeb 2846°F35°F35°FJan 144°FJan 144°F35°F35°F
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 hourly average winter temperatures. 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 the Winter in Toyama

Average Hourly Temperature in the Winter in ToyamaDecJanFeb12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMFallSpringvery coldcoldcoldcoolcold
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.

Baku, Azerbaijan (4,526 miles away) is the far-away foreign place with temperatures most similar to Toyama (view comparison).

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The winter in Toyama experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 56% to 62%. The highest chance of overcast or mostly cloudy conditions is 75% on January 20.

The clearest day of the winter is December 1, with clear, mostly clear, or partly cloudy conditions 44% of the time.

For reference, on January 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 75%, while on October 22, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 56%.

Cloud Cover Categories in the Winter in Toyama

Cloud Cover Categories in the Winter in ToyamaDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpringOct 2256%Oct 2256%Dec 144%Dec 144%Feb 2838%Feb 2838%Jan 132%Jan 132%Feb 127%Feb 127%clearpartly cloudymostly cloudyovercastmostly clear
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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Toyama, the chance of a wet day over the course of the winter is very rapidly decreasing, starting the season at 58% and ending it at 44%.

For reference, the year's highest daily chance of a wet day is 58% on December 10, and its lowest chance is 27% on June 1.

Over the course of the winter in Toyama, the chance of a day with only rain decreases from 56% to 37%, the chance of a day with mixed snow and rain increases from 2% to 6%, and the chance of a day with only snow remains an essentially constant 2% throughout.

Probability of Precipitation in the Winter in Toyama

Probability of Precipitation in the Winter in ToyamaDecJanFeb0%0%10%10%20%20%30%30%40%40%50%50%60%60%FallSpringDec 1058%Dec 1058%Feb 2844%Feb 2844%Jan 156%Jan 156%Feb 153%Feb 153%mixedrainsnow
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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Toyama is very rapidly decreasing, starting the season at 6.3 inches, when it rarely exceeds 9.0 inches or falls below 3.6 inches, and ending the season at 3.8 inches, when it rarely exceeds 5.5 inches or falls below 2.3 inches.

The highest average 31-day accumulation is 6.3 inches on December 4. The lowest average 31-day accumulation is 3.7 inches on February 20.

Average Monthly Rainfall in the Winter in Toyama

Average Monthly Rainfall in the Winter in ToyamaDecJanFeb0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inFallSpringDec 46.3 inDec 46.3 inFeb 193.7 inFeb 193.7 inJan 15.4 inJan 15.4 inFeb 14.0 inFeb 14.0 in
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 snowfall.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during the winter in Toyama is increasing, starting the season at 0.7 inches, when it rarely exceeds 2.5 inches or falls below -0.0 inches, and ending the season at 1.9 inches, when it rarely exceeds 5.6 inches or falls below 0.1 inches.

The highest average 31-day accumulation is 6.0 inches on January 24.

Average Monthly Snowfall in the Winter in Toyama

Average Monthly Snowfall in the Winter in ToyamaDecJanFeb0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 in16 in16 inFallSpringJan 246.0 inJan 246.0 inDec 10.7 inDec 10.7 inFeb 281.9 inFeb 281.9 inJan 14.3 inJan 14.3 in
The average 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.

Over the course of the winter in Toyama, the length of the day is rapidly increasing. From the start to the end of the season, the length of the day increases by 1 hour, 30 minutes, implying an average daily increase of 1 minute, 1 second, and weekly increase of 7 minutes, 7 seconds.

The shortest day of the winter is December 21, with 9 hours, 39 minutes of daylight and the longest day is February 28, with 11 hours, 21 minutes of daylight.

Hours of Daylight and Twilight in the Winter in Toyama

Hours of Daylight and Twilight in the Winter in ToyamaDecJanFeb0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrFallSpringDec 219 hr, 39 minDec 219 hr, 39 minnightnightdaydayFeb 2811 hr, 21 minFeb 2811 hr, 21 minFeb 110 hr, 23 minFeb 110 hr, 23 min
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 latest sunrise of the winter in Toyama is 7:04 AM on January 6 and the earliest sunrise is 41 minutes earlier at 6:23 AM on February 28.

The earliest sunset is 4:34 PM on December 6 and the latest sunset is 1 hour, 9 minutes later at 5:44 PM on February 28.

Daylight saving time is not observed in Toyama during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 4:32 AM and sets 14 hours, 41 minutes later, at 7:13 PM, while on December 21, the shortest day of the year, it rises at 6:59 AM and sets 9 hours, 39 minutes later, at 4:38 PM.

Sunrise & Sunset with Twilight in the Winter in Toyama

Sunrise & Sunset with Twilight in the Winter in ToyamaDecJanFeb12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMFallSpring6:23 AM6:23 AMFeb 285:44 PMFeb 285:44 PM6:49 AM6:49 AMDec 64:34 PMDec 64:34 PM7:04 AM7:04 AMJan 64:49 PMJan 64:49 PM6:53 AM6:53 AMFeb 15:16 PMFeb 15:16 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the winter. 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 figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in the Winter in Toyama

Solar Elevation and Azimuth in the Winter in ToyamaDecJanFeb12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMFallSpring00102020303050001010203040
northeastsouthwest
Solar elevation and azimuth in the the winter of 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for the winter of 2024. 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 the Winter in Toyama

Moon Rise, Set & Phases in the Winter in ToyamaDecJanFeb12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMFallSpringNov 19:48 PMNov 19:48 PMNov 166:29 AMNov 166:29 AMDec 13:22 PMDec 13:22 PMDec 156:02 PMDec 156:02 PMDec 317:28 AMDec 317:28 AMJan 147:28 AMJan 147:28 AMJan 299:37 PMJan 299:37 PMFeb 1210:54 PMFeb 1210:54 PMFeb 289:45 AMFeb 289:45 AMMar 143:55 PMMar 143:55 PMMar 297:58 PMMar 297:58 PM5:46 AM5:46 AM3:56 PM3:56 PM6:44 AM6:44 AM6:42 AM6:42 AM4:11 PM4:11 PM4:06 PM4:06 PM7:55 AM7:55 AM7:29 AM7:29 AM7:28 AM7:28 AM4:46 PM4:46 PM5:04 PM5:04 PM7:08 AM7:08 AM6:30 AM6:30 AM6:01 PM6:01 PM5:57 PM5:57 PM6:21 AM6:21 AM6:01 PM6:01 PM
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.

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 Toyama is essentially constant during the winter, remaining around 0% throughout.

For reference, on August 4, the muggiest day of the year, there are muggy conditions 97% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Winter in Toyama

Humidity Comfort Levels in the Winter in ToyamaDecJanFeb0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%FallSpringDec 10%Dec 10%Feb 280%Feb 280%Jan 10%Jan 10%Feb 10%Feb 10%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.

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 Toyama is essentially constant during the winter, remaining within 0.5 miles per hour of 10.7 miles per hour throughout.

For reference, on December 25, the windiest day of the year, the daily average wind speed is 11.2 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 6.0 miles per hour.

The highest daily average wind speed during the winter is 11.2 miles per hour on December 26.

Average Wind Speed in the Winter in Toyama

Average Wind Speed in the Winter in ToyamaDecJanFeb0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mphFallSpringDec 2611.2 mphDec 2611.2 mphDec 110.3 mphDec 110.3 mphFeb 2810.3 mphFeb 2810.3 mphFeb 111.0 mphFeb 111.0 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Toyama throughout the winter is predominantly from the west, with a peak proportion of 51% on December 26.

Wind Direction in the Winter in Toyama

Wind Direction in the Winter in ToyamaDecJanFeb0%100%20%80%40%60%60%40%80%20%100%0%FallSpringwestsouthnortheast
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).

Toyama 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 Toyama is very rapidly decreasing during the winter, falling by 12°F, from 62°F to 50°F, over the course of the season.

Average Water Temperature in the Winter in Toyama

Average Water Temperature in the Winter in ToyamaDecJanFeb50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FFallSpringDec 162°FDec 162°FFeb 2850°FFeb 2850°FJan 157°FJan 157°FFeb 153°FFeb 153°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Toyama typically lasts for 9.1 months (277 days), from around March 15 to around December 18, rarely starting before February 27 or after April 3, and rarely ending before December 1 or after January 3.

The winter in Toyama is very likely fully outside of the growing season, with the chance that a given day is in the growing season reaching a low of -0% on January 20.

Time Spent in Various Temperature Bands and the Growing Season in the Winter in Toyama

Time Spent in Various Temperature Bands and the Growing Season in the Winter in Toyamagrowing seasonDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%FallSpring91%Dec 191%Dec 1Feb 2812%Feb 2812%Jan 113%Jan 113%Feb 11%Feb 11%0%Jan 200%Jan 20freezingvery coldcoldcoolcomfortable
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.

The average accumulated growing degree days in Toyama are very rapidly decreasing during the winter, decreasing by 4,239°F, from 4,248°F to 9°F, over the course of the season.

Growing Degree Days in the Winter in Toyama

Growing Degree Days in the Winter in ToyamaDecJanFeb0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°F4,500°F4,500°FFallSpringDec 14,248°FDec 14,248°FFeb 289°FFeb 289°F
The average growing degree days accumulated over the course of the winter, with 25th to 75th and 10th to 90th percentile bands.

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 Toyama is increasing during the winter, rising by 1.3 kWh, from 2.0 kWh to 3.3 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 1.7 kWh on December 26.

Average Daily Incident Shortwave Solar Energy in the Winter in Toyama

Average Daily Incident Shortwave Solar Energy in the Winter in ToyamaDecJanFeb0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhFallSpringDec 261.7 kWhDec 261.7 kWhDec 12.0 kWhDec 12.0 kWhFeb 283.3 kWhFeb 283.3 kWhFeb 12.2 kWhFeb 12.2 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Toyama are 36.700 deg latitude, 137.217 deg longitude, and 36 ft elevation.

The topography within 2 miles of Toyama contains only modest variations in elevation, with a maximum elevation change of 285 feet and an average elevation above sea level of 34 feet. Within 10 miles contains only modest variations in elevation (1,467 feet). Within 50 miles contains very significant variations in elevation (10,597 feet).

The area within 2 miles of Toyama is covered by cropland (45%), grassland (30%), and trees (15%), within 10 miles by cropland (46%) and water (31%), and within 50 miles by trees (46%) and water (39%).

This report illustrates the typical weather in Toyama, 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, Toyama Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Toyama.

At a distance of 6 kilometers from Toyama, 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 Toyama 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.

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 © OpenStreetMap contributors.

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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.

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