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Average Weather in Oyabe Japan

In Oyabe, the summers are short, warm, and oppressive; the winters are very cold and windy; and it is wet and mostly cloudy year round. Over the course of the year, the temperature typically varies from 31°F to 87°F and is rarely below 25°F or above 94°F.

Based on the beach/pool score, the best time of year to visit Oyabe for hot-weather activities is from late July to late August.

Climate Summary

very coldcoldcoolcomfortablewarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow57%57%23%23%overcastclearprecipitation: 8.1 inprecipitation: 8.1 inmuggy: 98%muggy: 98%0%0%drydrybeach/pool score: 6.4beach/pool score: 6.40.00.0
Click on each chart for more information.

Temperature

The hot season lasts for 2.8 months, from June 25 to September 17, with an average daily high temperature above 78°F. The hottest day of the year is August 7, with an average high of 87°F and low of 74°F.

The cold season lasts for 3.2 months, from December 8 to March 15, with an average daily high temperature below 49°F. The coldest day of the year is January 28, with an average low of 31°F and high of 40°F.

Average High and Low Temperature

Average High and Low Temperature in OyabehotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°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 787°FAug 787°F31°F31°F74°F74°FJun 2578°FJun 2578°FSep 1778°FSep 1778°FDec 849°FDec 849°FMar 1549°FMar 1549°F67°F67°F65°F65°F39°F39°F36°F36°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.

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

Average Hourly Temperature in OyabeJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldcoldcoldcoolcoolwarmhotvery coldcomfortable
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.

Brooklyn, New York, United States (6,757 miles away) is the far-away foreign place with temperatures most similar to Oyabe (view comparison).

Clouds

In Oyabe, 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 Oyabe begins around July 26 and lasts for 4.4 months, ending around December 6. On October 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 57% of the time, and overcast or mostly cloudy 43% of the time.

The cloudier part of the year begins around December 6 and lasts for 7.6 months, ending around July 26. On January 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 77% of the time, and clear, mostly clear, or partly cloudy 23% of the time.

Cloud Cover Categories

Cloud Cover Categories in OyabeclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 2357%Oct 2357%Jan 2023%Jan 2023%Jul 2640%Jul 2640%Dec 640%Dec 640%NowNowclearmostly clearmostly cloudyovercastpartly cloudy
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.

Precipitation

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

The wetter season lasts 8.6 months, from June 21 to March 9, with a greater than 43% chance of a given day being a wet day. The chance of a wet day peaks at 59% on December 26.

The drier season lasts 3.4 months, from March 9 to June 21. The smallest chance of a wet day is 27% on June 2.

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 throughout the year is rain alone, with a peak probability of 56% on November 30.

Daily Chance of Precipitation

Daily Chance of Precipitation in OyabewetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 2659%Dec 2659%Jun 227%Jun 227%Jun 2143%Jun 2143%Mar 943%Mar 943%NowNowmixedrainsnow
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 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. Oyabe experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Oyabe. The most rain falls during the 31 days centered around July 5, with an average total accumulation of 8.1 inches.

The least rain falls around February 19, with an average total accumulation of 3.7 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Snowfall

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. Oyabe experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 3.7 months, from November 28 to March 20, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 24, with an average total liquid-equivalent accumulation of 0.9 inches.

The snowless period of the year lasts for 8.3 months, from March 20 to November 28. The least snow falls around August 5, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in OyabesnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inJan 240.9 inJan 240.9 inAug 50.0 inAug 50.0 inNov 280.1 inNov 280.1 inMar 200.1 inMar 200.1 in
The average liquid-equivalent 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.

Sun

The length of the day in Oyabe varies significantly over the course of the year. In 2021, the shortest day is December 22, with 9 hours, 39 minutes of daylight; the longest day is June 21, with 14 hours, 40 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in OyabeJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2014 hr, 40 minJun 2114 hr, 40 minJun 2112 hr, 10 minSep 2312 hr, 10 minSep 239 hr, 39 minDec 229 hr, 39 minDec 22nightnightdayNowNow
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 earliest sunrise is at 4:33 AM on June 13, and the latest sunrise is 2 hours, 32 minutes later at 7:05 AM on January 6. The earliest sunset is at 4:36 PM on December 6, and the latest sunset is 2 hours, 39 minutes later at 7:15 PM on June 29.

Daylight saving time (DST) is not observed in Oyabe during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in OyabeJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 134:33 AMJun 134:33 AM7:15 PMJun 297:15 PMJun 29Dec 64:36 PMDec 64:36 PM7:05 AMJan 67:05 AMJan 6daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

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 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.

Humidity

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.

Oyabe experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.4 months, from June 14 to September 26, during which time the comfort level is muggy, oppressive, or miserable at least 24% of the time. The muggiest day of the year is August 5, with muggy conditions 98% of the time.

The least muggy day of the year is February 19, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in OyabemuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 190%Feb 190%98%Aug 598%Aug 5Jun 1424%Jun 1424%Sep 2624%Sep 2624%NowNowoppressiveoppressivedrydrymuggymuggy
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.

Wind

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

The windier part of the year lasts for 6.1 months, from October 28 to May 1, with average wind speeds of more than 9.9 miles per hour. The windiest day of the year is December 26, with an average hourly wind speed of 12.3 miles per hour.

The calmer time of year lasts for 5.9 months, from May 1 to October 28. The calmest day of the year is August 3, with an average hourly wind speed of 7.4 miles per hour.

Average Wind Speed

Average Wind Speed in OyabewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphDec 2612.3 mphDec 2612.3 mphAug 37.4 mphAug 37.4 mphOct 289.9 mphOct 289.9 mphMay 19.9 mphMay 19.9 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the north for 1.3 months, from February 13 to March 23 and for 2.7 months, from August 12 to November 4, with a peak percentage of 44% on September 23. The wind is most often from the west for 2.4 weeks, from March 23 to April 9; for 1.3 months, from June 12 to July 21; and for 3.3 months, from November 4 to February 13, with a peak percentage of 36% on July 9. The wind is most often from the south for 2.1 months, from April 9 to June 12 and for 3.1 weeks, from July 21 to August 12, with a peak percentage of 38% on May 6.

Wind Direction

Wind Direction in OyabeWNWSWSNWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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).

Water Temperature

Oyabe 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 water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.5 months, from July 16 to October 1, with an average temperature above 74°F. The day of the year with the warmest water is August 19, with an average temperature of 80°F.

The time of year with cooler water lasts for 3.9 months, from January 6 to May 3, with an average temperature below 56°F. The day of the year with the coolest water is March 11, with an average temperature of 50°F.

Average Water Temperature

Average Water Temperature in OyabewarmcoolJanFebMarAprMayJunJulAugSepOctNovDec45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FAug 1980°FAug 1980°F50°FMar 1150°FMar 11Jul 1674°FJul 1674°FOct 174°FOct 174°FJan 656°FJan 656°FMay 356°FMay 356°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Oyabe 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 times of year to visit Oyabe for general outdoor tourist activities are from late May to late June and from late July to early October, with a peak score in the first week of September.

Tourism Score

Tourism Score in Oyabebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.16.10.00.05.95.95.45.4NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Oyabe for hot-weather activities is from late July to late August, with a peak score in the second week of August.

Beach/Pool Score

Beach/Pool Score in OyabeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.46.40.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/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.

Growing Season

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 Oyabe typically lasts for 8.7 months (265 days), from around March 23 to around December 13, rarely starting before March 7 or after April 9, and rarely ending before November 26 or after December 30.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Oyabegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 2350%Mar 2350%Dec 1350%Dec 1390%Apr 990%Apr 990%Nov 2690%Nov 2610%Mar 710%Mar 710%Dec 3010%Dec 300%Feb 10%Feb 1Aug 10100%Aug 10100%NowNowvery coldwarmcoolcomfortablecoldfreezing
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 Oyabe should appear around April 12, only rarely appearing before April 2 or after April 20.

Growing Degree Days

Growing Degree Days in OyabeJanFebMarAprMayJunJulAugSepOctNovDec0°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 1284°FApr 1284°FJun 16900°FJun 16900°FJul 241,800°FJul 241,800°FDec 314,036°FDec 314,036°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 4.3 months, from April 15 to August 26, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is June 2, with an average of 6.3 kWh.

The darker period of the year lasts for 3.0 months, from November 10 to February 12, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest day of the year is December 27, with an average of 1.6 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in OyabebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 26.3 kWhJun 26.3 kWhDec 271.6 kWhDec 271.6 kWhApr 155.3 kWhApr 155.3 kWhAug 265.3 kWhAug 265.3 kWhFeb 122.6 kWhFeb 122.6 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.

Topography

For the purposes of this report, the geographical coordinates of Oyabe are 36.667 deg latitude, 136.850 deg longitude, and 217 ft elevation.

The topography within 2 miles of Oyabe contains significant variations in elevation, with a maximum elevation change of 801 feet and an average elevation above sea level of 274 feet. Within 10 miles contains significant variations in elevation (2,713 feet). Within 50 miles contains large variations in elevation (10,348 feet).

The area within 2 miles of Oyabe is covered by trees (49%) and cropland (44%), within 10 miles by trees (52%) and cropland (42%), and within 50 miles by water (51%) and trees (37%).

Data Sources

This report illustrates the typical weather in Oyabe, 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 Oyabe.

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

The stations contributing to this reconstruction are: Toyama Airport (68%, 30 kilometers, east) and Komatsu Airport (32%, 50 kilometers, southwest).

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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.