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Climate and Average Weather Year Round in Shibukawa Japan

In Shibukawa, the summers are short, warm, muggy, wet, and mostly cloudy and the winters are very cold, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 27°F to 86°F and is rarely below 20°F or above 94°F.

Based on the tourism score, the best time of year to visit Shibukawa for warm-weather activities is from mid July to late September.

Climate in Shibukawa

very coldcoldcoolcomfortablewarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow71%71%27%27%overcastclearprecipitation: 6.6 inprecipitation: 6.6 in1.3 in1.3 inmuggy: 85%muggy: 85%0%0%drydrytourism score: 6.0tourism score: 6.00.00.0
Shibukawa weather by month. Click on each chart for more information.

The hot season lasts for 2.9 months, from June 18 to September 16, with an average daily high temperature above 77°F. The hottest month of the year in Shibukawa is August, with an average high of 85°F and low of 71°F.

The cold season lasts for 3.3 months, from December 4 to March 15, with an average daily high temperature below 49°F. The coldest month of the year in Shibukawa is January, with an average low of 27°F and high of 40°F.

Average High and Low Temperature in Shibukawa

Average High and Low Temperature in ShibukawahotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2840°FJan 2840°FAug 686°FAug 686°F27°F27°F72°F72°FJun 1877°FJun 1877°FSep 1677°FSep 1677°FDec 449°FDec 449°FMar 1549°FMar 1549°F64°F64°F64°F64°F36°F36°F35°F35°FNowNow
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.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 40°F41°F50°F62°F71°F77°F83°F85°F77°F67°F56°F46°F
Temp. 33°F34°F41°F53°F62°F69°F76°F78°F70°F59°F48°F38°F
Low 27°F28°F35°F45°F55°F63°F70°F71°F64°F53°F42°F33°F

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 Shibukawa

Average Hourly Temperature in ShibukawaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmhotfreezingwarm
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.

The Bronx, New York, United States (6,710 miles away) is the far-away foreign place with temperatures most similar to Shibukawa (view comparison).

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Compare Shibukawa to another city:

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In Shibukawa, 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 Shibukawa begins around October 8 and lasts for 5.8 months, ending around April 3.

The clearest month of the year in Shibukawa is December, during which on average the sky is clear, mostly clear, or partly cloudy 69% of the time.

The cloudier part of the year begins around April 3 and lasts for 6.2 months, ending around October 8.

The cloudiest month of the year in Shibukawa is June, during which on average the sky is overcast or mostly cloudy 69% of the time.

Cloud Cover Categories in Shibukawa

Cloud Cover Categories in ShibukawaclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Dec 1771%Dec 1771%Jul 127%Jul 127%Oct 849%Oct 849%Apr 349%Apr 349%NowNowclearmostly clearpartly cloudymostly cloudyovercast
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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 34%40%47%53%59%69%68%58%57%47%38%31%
Clearer 66%60%53%47%41%31%32%42%43%53%62%69%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Shibukawa varies significantly throughout the year.

The wetter season lasts 4.0 months, from June 5 to October 5, with a greater than 35% chance of a given day being a wet day. The month with the most wet days in Shibukawa is July, with an average of 15.5 days with at least 0.04 inches of precipitation.

The drier season lasts 8.0 months, from October 5 to June 5. The month with the fewest wet days in Shibukawa is January, with an average of 5.0 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Shibukawa is July, with an average of 15.5 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 55% on July 3.

Daily Chance of Precipitation in Shibukawa

Daily Chance of Precipitation in ShibukawawetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 355%Jul 355%Dec 3015%Dec 3015%Jun 535%Jun 535%Oct 535%Oct 535%NowNowrainsnow
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).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 3.1d3.9d7.6d8.8d9.5d13.2d15.5d13.5d12.7d9.1d6.9d4.6d
Mixed 1.2d1.3d0.7d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.6d
Snow 0.7d0.5d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d
Any 5.0d5.7d8.4d8.8d9.5d13.2d15.5d13.5d12.7d9.1d7.0d5.3d

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. Shibukawa experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Shibukawa. The month with the most rain in Shibukawa is September, with an average rainfall of 6.5 inches.

The month with the least rain in Shibukawa is January, with an average rainfall of 1.0 inches.

Average Monthly Rainfall in Shibukawa

Average Monthly Rainfall in ShibukawaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inSep 106.6 inSep 106.6 inJan 171.0 inJan 171.0 inJul 36.1 inJul 36.1 inNowNow
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 1.0″1.4″2.3″3.1″3.5″5.1″5.7″5.5″6.5″4.2″2.3″1.4″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Shibukawa experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 3.0 months, from December 18 to March 17, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Shibukawa is January, with an average snowfall of 3.5 inches.

The snowless period of the year lasts for 9.0 months, from March 17 to December 18. The least snow falls around August 3, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Shibukawa

Average Monthly Snowfall in ShibukawasnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inJan 273.8 inJan 273.8 inAug 30.0 inAug 30.0 inDec 181.0 inDec 181.0 inMar 171.0 inMar 171.0 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 3.5″3.3″1.1″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.1″0.9″

The length of the day in Shibukawa varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 40 minutes of daylight; the longest day is June 21, with 14 hours, 39 minutes of daylight.

Hours of Daylight and Twilight in Shibukawa

Hours of Daylight and Twilight in ShibukawaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2014 hr, 39 minJun 2114 hr, 39 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 40 minDec 219 hr, 40 minDec 21nightnightdayNowNow
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.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 10.0h10.9h12.0h13.1h14.1h14.6h14.4h13.5h12.4h11.2h10.2h9.7h

The earliest sunrise is at 4:25 AM on June 13, and the latest sunrise is 2 hours, 31 minutes later at 6:56 AM on January 8. The earliest sunset is at 4:28 PM on December 6, and the latest sunset is 2 hours, 38 minutes later at 7:06 PM on June 28.

Daylight saving time (DST) is not observed in Shibukawa during 2024.

Sunrise & Sunset with Twilight in Shibukawa

Sunrise & Sunset with Twilight in ShibukawaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMJun 134:25 AMJun 134:25 AM7:06 PMJun 287:06 PMJun 28Dec 64:28 PMDec 64:28 PM6:56 AMJan 86:56 AMJan 8daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. 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 Shibukawa

Solar Elevation and Azimuth in ShibukawaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM000010101010202020203030303040404050505060607000001010101020202020303030304040405050607077NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 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 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.

Moon Rise, Set & Phases in Shibukawa

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.

Shibukawa experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.9 months, from June 21 to September 19, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The month with the most muggy days in Shibukawa is August, with 24.0 days that are muggy or worse.

The least muggy day of the year is February 14, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Shibukawa

Humidity Comfort Levels in ShibukawamuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 140%Feb 140%85%Aug 785%Aug 7Jun 2121%Jun 2121%Sep 1921%Sep 1921%NowNowoppressiveoppressivemuggymuggyhumidhumiddrydrycomfortablecomfortable
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.2d4.7d20.1d24.0d8.8d0.3d0.0d0.0d

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 Shibukawa experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.5 months, from November 21 to May 4, with average wind speeds of more than 7.2 miles per hour. The windiest month of the year in Shibukawa is February, with an average hourly wind speed of 9.6 miles per hour.

The calmer time of year lasts for 6.5 months, from May 4 to November 21. The calmest month of the year in Shibukawa is July, with an average hourly wind speed of 4.8 miles per hour.

Average Wind Speed in Shibukawa

Average Wind Speed in ShibukawawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mphFeb 89.7 mphFeb 89.7 mphJul 304.7 mphJul 304.7 mphNov 217.2 mphNov 217.2 mphMay 47.2 mphMay 47.2 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 9.39.69.17.86.65.34.84.95.56.17.08.4

The predominant average hourly wind direction in Shibukawa varies throughout the year.

The wind is most often from the north for 2.0 months, from February 14 to April 14; for 5.0 days, from April 24 to April 29; for 1.7 weeks, from May 10 to May 22; and for 1.9 months, from September 21 to November 18, with a peak percentage of 43% on February 25. The wind is most often from the west for 1.4 weeks, from April 14 to April 24 and for 2.9 months, from November 18 to February 14, with a peak percentage of 30% on April 14. The wind is most often from the east for 4.0 months, from May 22 to September 21, with a peak percentage of 39% on August 14.

Wind Direction in Shibukawa

Wind Direction in ShibukawaWNNENWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastnorthsouth
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).

To characterize how pleasant the weather is in Shibukawa 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 Shibukawa for general outdoor tourist activities is from mid July to late September, with a peak score in the first week of September.

Tourism Score in Shibukawa

Tourism Score in Shibukawabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.06.00.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Shibukawa for hot-weather activities is from late July to late August, with a peak score in the first week of August.

Beach/Pool Score in Shibukawa

Beach/Pool Score in ShibukawaJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.85.80.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

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 Shibukawa typically lasts for 8.1 months (247 days), from around March 25 to around November 28, rarely starting before March 8 or after April 12, and rarely ending before November 10 or after December 15.

Time Spent in Various Temperature Bands and the Growing Season in Shibukawa

Time Spent in Various Temperature Bands and the Growing Season in Shibukawagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 2550%Mar 2550%Nov 2850%Nov 2890%Apr 1290%Apr 1290%Nov 1090%Nov 1010%Mar 810%Mar 810%Dec 1510%Dec 150%Jan 270%Jan 27Jul 27100%Jul 27100%freezingvery coldcoolcomfortablewarmhotcold
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.

Based on growing degree days alone, the first spring blooms in Shibukawa should appear around April 15, only rarely appearing before April 6 or after April 23.

Growing Degree Days in Shibukawa

Growing Degree Days in ShibukawaJanFebMarAprMayJunJulAugSepOctNovDec0°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°FApr 1588°FApr 1588°FJun 18900°FJun 18900°FJul 261,800°FJul 261,800°FDec 313,776°FDec 313,776°F
The average growing degree days accumulated over the course of the year, 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 experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 4.4 months, from April 10 to August 22, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest month of the year in Shibukawa is May, with an average of 5.9 kWh.

The darker period of the year lasts for 3.0 months, from November 5 to February 6, with an average daily incident shortwave energy per square meter below 3.0 kWh. The darkest month of the year in Shibukawa is December, with an average of 2.3 kWh.

Average Daily Incident Shortwave Solar Energy in Shibukawa

Average Daily Incident Shortwave Solar Energy in ShibukawabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 226.0 kWhMay 226.0 kWhDec 242.3 kWhDec 242.3 kWhApr 105.3 kWhApr 105.3 kWhAug 225.3 kWhAug 225.3 kWhNov 53.0 kWhNov 53.0 kWhFeb 63.0 kWhFeb 63.0 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 2.53.34.45.45.95.65.65.44.43.62.82.3

For the purposes of this report, the geographical coordinates of Shibukawa are 36.483 deg latitude, 139.000 deg longitude, and 663 ft elevation.

The topography within 2 miles of Shibukawa contains very significant variations in elevation, with a maximum elevation change of 1,053 feet and an average elevation above sea level of 805 feet. Within 10 miles contains very significant variations in elevation (4,810 feet). Within 50 miles also contains extreme variations in elevation (9,255 feet).

The area within 2 miles of Shibukawa is covered by cropland (53%) and trees (42%), within 10 miles by trees (60%) and cropland (34%), and within 50 miles by trees (70%) and cropland (24%).

This report illustrates the typical weather in Shibukawa, 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 Shibukawa.

For each station, the records are corrected for the elevation difference between that station and Shibukawa 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 Shibukawa is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Shibukawa and a given station.

The stations contributing to this reconstruction are:

  • Iruma Ab (RJTJ, 59%, 50 mi, southeast, -371 ft elevation change)
  • Toyama Airport (RJNT, 21%, 101 mi, west, -568 ft elevation change)
  • Niigata Airport (RJSN, 20%, 102 mi, north, -650 ft elevation change)

To get a sense of how much these sources agree with each other, you can view a comparison of Shibukawa and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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.

Disclaimer

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.

Please review our full terms contained on our Terms of Service page.