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Climate and Average Weather Year Round in Uchimaru Japan

In Uchimaru, the summers are short, warm, humid, wet, and mostly cloudy and the winters are very cold, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 25°F to 80°F and is rarely below 18°F or above 90°F.

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

Climate in Uchimaru

very coldcoldcoolcomfortablewarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow67%67%42%42%overcastclearprecipitation: 5.6 inprecipitation: 5.6 in1.5 in1.5 inmuggy: 68%muggy: 68%0%0%drydrytourism score: 6.4tourism score: 6.40.00.0
Uchimaru weather by month. Click on each chart for more information.

Average Temperature in Uchimaru

The warm season lasts for 2.9 months, from June 29 to September 24, with an average daily high temperature above 71°F. The hottest day of the year is August 8, with an average high of 80°F and low of 68°F.

The cold season lasts for 3.4 months, from December 5 to March 17, with an average daily high temperature below 44°F. The coldest day of the year is January 25, with an average low of 25°F and high of 36°F.

Average High and Low Temperature in Uchimaru

Average High and Low Temperature in UchimaruwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2536°FJan 2536°FAug 880°FAug 880°F25°F25°F68°F68°FJun 2971°FJun 2971°FSep 2471°FSep 2471°FDec 544°FDec 544°FMar 1744°FMar 1744°F60°F60°F57°F57°F33°F33°F31°F31°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 in Uchimaru

Average Hourly Temperature in UchimaruJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmfreezing
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.

Narragansett Pier, Rhode Island, United States (6,417 miles away) is the far-away foreign place with temperatures most similar to Uchimaru (view comparison).

Compare Uchimaru to another city:

Clouds

In Uchimaru, 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 Uchimaru begins around September 29 and lasts for 2.9 months, ending around December 25. On November 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.

The cloudier part of the year begins around December 25 and lasts for 9.1 months, ending around September 29. On July 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 58% of the time, and clear, mostly clear, or partly cloudy 42% of the time.

Cloud Cover Categories in Uchimaru

Cloud Cover Categories in UchimaruclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Nov 167%Nov 167%Jul 2142%Jul 2142%Sep 2954%Sep 2954%Dec 2554%Dec 2554%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.

Precipitation

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

The wetter season lasts 7.8 months, from April 21 to December 15, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 40% on September 3.

The drier season lasts 4.2 months, from December 15 to April 21. The smallest chance of a wet day is 20% on January 23.

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 40% on September 3.

Daily Chance of Precipitation in Uchimaru

Daily Chance of Precipitation in UchimaruwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Sep 340%Sep 340%Jan 2320%Jan 2320%Jan 125%Jan 125%Apr 2130%Apr 2130%NowNowrainmixed
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. Uchimaru experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Uchimaru. The most rain falls during the 31 days centered around September 10, with an average total accumulation of 5.6 inches.

The least rain falls around February 4, with an average total accumulation of 1.1 inches.

Average Monthly Rainfall in Uchimaru

Average Monthly Rainfall in UchimaruJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inSep 105.6 inSep 105.6 inFeb 41.1 inFeb 41.1 inJul 104.5 inJul 104.5 inMay 63.3 inMay 63.3 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 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. Uchimaru experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 4.0 months, from November 27 to March 27, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around February 13, with an average total liquid-equivalent accumulation of 0.4 inches.

The snowless period of the year lasts for 8.0 months, from March 27 to November 27. The least snow falls around August 5, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall in Uchimaru

Average Liquid-Equivalent Monthly Snowfall in UchimarusnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inFeb 130.4 inFeb 130.4 inAug 50.0 inAug 50.0 inNov 270.1 inNov 270.1 inMar 270.1 inMar 270.1 inNowNow
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 Uchimaru varies significantly over the course of the year. In 2021, the shortest day is December 22, with 9 hours, 16 minutes of daylight; the longest day is June 21, with 15 hours, 4 minutes of daylight.

Hours of Daylight and Twilight in Uchimaru

Hours of Daylight and Twilight in UchimaruJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2015 hr, 4 minJun 2115 hr, 4 minJun 2112 hr, 10 minSep 2312 hr, 10 minSep 239 hr, 16 minDec 229 hr, 16 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 4:02 AM on June 14, and the latest sunrise is 2 hours, 55 minutes later at 6:57 AM on January 5. The earliest sunset is at 4:07 PM on December 8, and the latest sunset is 3 hours, 2 minutes later at 7:08 PM on June 27.

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

Sunrise & Sunset with Twilight in Uchimaru

Sunrise & Sunset with Twilight in UchimaruJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMJun 144:02 AMJun 144:02 AM7:08 PMJun 277:08 PMJun 27Dec 84:07 PMDec 84:07 PM6:57 AMJan 56:57 AMJan 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 in Uchimaru

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.

Uchimaru experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.4 months, from July 4 to September 18, during which time the comfort level is muggy, oppressive, or miserable at least 17% of the time. The muggiest day of the year is August 8, with muggy conditions 68% of the time.

The least muggy day of the year is February 26, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Uchimaru

Humidity Comfort Levels in UchimarumuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 260%Feb 260%Aug 868%Aug 868%Jul 417%Jul 417%Sep 1817%Sep 1817%NowNowoppressiveoppressivemuggymuggydrydrycomfortablecomfortablehumidhumid
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 Uchimaru experiences extreme seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from October 20 to April 22, with average wind speeds of more than 11.6 miles per hour. The windiest day of the year is January 19, with an average hourly wind speed of 15.9 miles per hour.

The calmer time of year lasts for 5.9 months, from April 22 to October 20. The calmest day of the year is July 29, with an average hourly wind speed of 7.4 miles per hour.

Average Wind Speed in Uchimaru

Average Wind Speed in UchimaruwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mphJan 1915.9 mphJan 1915.9 mphJul 297.4 mphJul 297.4 mphOct 2011.6 mphOct 2011.6 mphApr 2211.6 mphApr 2211.6 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 Uchimaru varies throughout the year.

The wind is most often from the east for 2.8 months, from June 12 to September 5, with a peak percentage of 39% on July 8. The wind is most often from the west for 9.2 months, from September 5 to June 12, with a peak percentage of 78% on January 1.

Wind Direction in Uchimaru

Wind Direction in UchimaruWEWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastsouthnorth
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

Uchimaru 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 2.8 months, from July 21 to October 16, with an average temperature above 65°F. The day of the year with the warmest water is August 27, with an average temperature of 70°F.

The time of year with cooler water lasts for 3.7 months, from January 19 to May 9, with an average temperature below 48°F. The day of the year with the coolest water is March 12, with an average temperature of 43°F.

Average Water Temperature in Uchimaru

Average Water Temperature in UchimaruwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FAug 2770°FAug 2770°F43°FMar 1243°FMar 12Jul 2165°FJul 2165°FOct 1665°FOct 1665°FJan 1948°FJan 1948°FMay 948°FMay 948°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 Uchimaru 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 Uchimaru for general outdoor tourist activities is from mid July to mid September, with a peak score in the second week of August.

Tourism Score in Uchimaru

Tourism Score in Uchimarubest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.46.40.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 Uchimaru for hot-weather activities is from late July to late August, with a peak score in the second week of August.

Beach/Pool Score in Uchimaru

Beach/Pool Score in UchimaruJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.64.60.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Uchimaru typically lasts for 7.2 months (220 days), from around April 11 to around November 18, rarely starting before March 25 or after April 28, and rarely ending before November 3 or after December 3.

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

Time Spent in Various Temperature Bands and the Growing Season in Uchimarugrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1150%Apr 1150%Nov 1850%Nov 1890%Apr 2890%Apr 2890%Nov 390%Nov 310%Mar 2510%Mar 2510%Dec 310%Dec 3Jul 30100%Jul 30100%NowNowfreezingvery coldcoldcoolcomfortablewarmhot
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 Uchimaru should appear around April 30, only rarely appearing before April 22 or after May 10.

Growing Degree Days in Uchimaru

Growing Degree Days in UchimaruJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FApr 3090°FApr 3090°FJul 13900°FJul 13900°FAug 241,800°FAug 241,800°FDec 312,711°FDec 312,711°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 4.1 months, from April 18 to August 21, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is June 10, with an average of 6.2 kWh.

The darker period of the year lasts for 3.1 months, from November 10 to February 13, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 26, with an average of 1.5 kWh.

Average Daily Incident Shortwave Solar Energy in Uchimaru

Average Daily Incident Shortwave Solar Energy in UchimarubrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 106.2 kWhJun 106.2 kWhDec 261.5 kWhDec 261.5 kWhApr 185.3 kWhApr 185.3 kWhAug 215.3 kWhAug 215.3 kWhFeb 132.5 kWhFeb 132.5 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 Uchimaru are 40.514 deg latitude, 141.493 deg longitude, and 52 ft elevation.

The topography within 2 miles of Uchimaru contains only modest variations in elevation, with a maximum elevation change of 325 feet and an average elevation above sea level of 51 feet. Within 10 miles contains only modest variations in elevation (2,792 feet). Within 50 miles contains large variations in elevation (5,531 feet).

The area within 2 miles of Uchimaru is covered by grassland (32%), cropland (29%), and trees (19%), within 10 miles by trees (37%) and water (36%), and within 50 miles by water (55%) and trees (36%).

Data Sources

This report illustrates the typical weather in Uchimaru, 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 Uchimaru.

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

The stations contributing to this reconstruction are: Hachinohe Ab (RJSH, 99%, 5.2 kilometers, northwest) and Akita Airport (RJSK, 0.8%, 148 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.