1. WeatherSpark.com
  2. Japan
  3. Shizuoka
  4. Yaizu

Average Weather in Yaizu Japan

In Yaizu, the summers are short, warm, oppressive, and mostly cloudy; the winters are cold, windy, and mostly clear; and it is wet year round. Over the course of the year, the temperature typically varies from 36°F to 86°F and is rarely below 29°F or above 92°F.

Temperature

The hot season lasts for 2.9 months, from June 25 to September 22, with an average daily high temperature above 79°F. The hottest day of the year is August 9, with an average high of 86°F and low of 75°F.

The cool season lasts for 3.3 months, from December 7 to March 17, with an average daily high temperature below 58°F. The coldest day of the year is January 26, with an average low of 36°F and high of 51°F.

Average High and Low Temperature

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 YaizuJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoldcoolwarmvery coldcomfortablehot
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Clouds

In Yaizu, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Yaizu begins around October 1 and lasts for 5.9 months, ending around March 29. On December 27, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 24% of the time.

The cloudier part of the year begins around March 29 and lasts for 6.1 months, ending around October 1. On June 27, the cloudiest day of the year, the sky is overcast or mostly cloudy 74% of the time, and clear, mostly clear, or partly cloudy 26% of the time.

Cloud Cover Categories

Cloud Cover Categories in YaizuclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Dec 2776%Dec 2776%Jun 2726%Jun 2726%Oct 150%Oct 150%Mar 2951%Mar 2951%clearovercastmostly clearpartly cloudymostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 7.1 months, from March 9 to October 12, with a greater than 32% chance of a given day being a wet day. The chance of a wet day peaks at 50% on June 24.

The drier season lasts 4.9 months, from October 12 to March 9. The smallest chance of a wet day is 13% on December 28.

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 50% on June 24.

Daily Chance of Precipitation

Daily Chance of Precipitation in YaizuwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jun 2450%Jun 2450%Dec 2813%Dec 2813%Mar 932%Mar 932%Oct 1232%Oct 1232%rain
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. Yaizu experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Yaizu. The most rain falls during the 31 days centered around June 26, with an average total accumulation of 8.7 inches.

The least rain falls around December 30, with an average total accumulation of 2.0 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.

Sun

The length of the day in Yaizu varies significantly over the course of the year. In 2017, the shortest day is December 22, with 9 hours, 49 minutes of daylight; the longest day is June 21, with 14 hours, 30 minutes of daylight.

Hours of Daylight and Twilight

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 4:32 AM on June 13, and the latest sunrise is 2 hours, 22 minutes later at 6:54 AM on January 7. The earliest sunset is at 4:35 PM on December 5, and the latest sunset is 2 hours, 29 minutes later at 7:04 PM on June 29.

Daylight saving time (DST) is not observed in Yaizu during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in YaizuJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 134:32 AMJun 134:32 AM7:04 PMJun 297:04 PMJun 29Dec 54:35 PMDec 54:35 PM6:54 AMJan 76:54 AMJan 7daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. 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.

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.

Yaizu experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.1 months, from June 3 to October 5, 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 12, with muggy conditions 97% of the time.

The least muggy day of the year is December 30, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in YaizumuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Dec 300%Dec 300%97%Aug 1297%Aug 12Jun 324%Jun 324%Oct 524%Oct 524%drydrymiserablemiserableoppressiveoppressivehumidhumidmuggymuggy
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

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

The windier part of the year lasts for 4.9 months, from November 20 to April 16, with average wind speeds of more than 9.8 miles per hour. The windiest day of the year is January 17, with an average hourly wind speed of 11.9 miles per hour.

The calmer time of year lasts for 7.1 months, from April 16 to November 20. The calmest day of the year is August 4, with an average hourly wind speed of 7.8 miles per hour.

Average Wind Speed

Average Wind Speed in YaizuwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mph16 mph18 mph20 mphJan 1711.9 mphJan 1711.9 mphAug 47.8 mphAug 47.8 mphNov 209.8 mphNov 209.8 mphApr 169.8 mphApr 169.8 mph
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 Yaizu varies throughout the year.

The wind is most often from the east for 2.1 weeks, from May 28 to June 12 and for 2.4 months, from August 21 to November 3, with a peak percentage of 50% on October 5. The wind is most often from the west for 1.9 months, from June 12 to August 8 and for 6.8 months, from November 3 to May 28, with a peak percentage of 44% on July 9. The wind is most often from the south for 1.9 weeks, from August 8 to August 21, with a peak percentage of 34% on August 10.

Wind Direction

Wind Direction in YaizuWEWSEWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westeastsouthnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 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

Yaizu 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 2.6 months, from July 15 to October 2, with an average temperature above 76°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 4.0 months, from December 25 to April 24, with an average temperature below 64°F. The day of the year with the coolest water is February 15, with an average temperature of 59°F.

Average Water Temperature

The daily average water temperature (purple line), 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 4.5 months, from April 14 to August 31, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is July 22, with an average of 6.0 kWh.

The darker period of the year lasts for 3.2 months, from October 31 to February 4, with an average daily incident shortwave energy per square meter below 3.4 kWh. The darkest day of the year is December 11, with an average of 2.7 kWh.

Average Daily Incident Shortwave Solar Energy

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 Yaizu are 34.869 deg latitude, 138.320 deg longitude, and 26 ft elevation.

The topography within 2 miles of Yaizu contains significant variations in elevation, with a maximum elevation change of 538 feet and an average elevation above sea level of 31 feet. Within 10 miles contains significant variations in elevation (2,270 feet). Within 50 miles contains large variations in elevation (12,365 feet).

The area within 2 miles of Yaizu is covered by water (53%) and cropland (27%), within 10 miles by water (53%) and trees (26%), and within 50 miles by water (54%) and trees (39%).

Data Sources

This report illustrates the typical weather in Yaizu, 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 Yaizu.

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

The stations contributing to this reconstruction are: Shizuhama Ab (99%, 7 kilometers, south) and Atsugi United States Naval Air Station (1.2%, 122 kilometers, northeast).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports 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.