Climate and Average Weather Year Round in Tsuruoka Japan

In Tsuruoka, the summers are short, warm, muggy, and wet; the winters are very cold, snowy, and windy; and it is mostly cloudy year round. Over the course of the year, the temperature typically varies from 29°F to 83°F and is rarely below 24°F or above 89°F.

Based on the tourism score, the best time of year to visit Tsuruoka for warm-weather activities is from early June to late September.

The warm season lasts for 2.9 months, from June 23 to September 20, with an average daily high temperature above 74°F. The hottest month of the year in Tsuruoka is August, with an average high of 82°F and low of 72°F.

The cold season lasts for 3.5 months, from December 4 to March 20, with an average daily high temperature below 46°F. The coldest month of the year in Tsuruoka is January, with an average low of 30°F and high of 38°F.

In Tsuruoka, 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 Tsuruoka begins around March 8 and lasts for 8.8 months, ending around December 2.

The clearest month of the year in Tsuruoka is October, during which on average the sky is clear, mostly clear, or partly cloudy 56% of the time.

The cloudier part of the year begins around December 2 and lasts for 3.2 months, ending around March 8.

The cloudiest month of the year in Tsuruoka is January, during which on average the sky is overcast or mostly cloudy 80% of the time.

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

The wetter season lasts 7.6 months, from June 22 to February 11, with a greater than 41% chance of a given day being a wet day. The month with the most wet days in Tsuruoka is December, with an average of 16.4 days with at least 0.04 inches of precipitation.

The drier season lasts 4.4 months, from February 11 to June 22. The month with the fewest wet days in Tsuruoka is May, with an average of 9.2 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 Tsuruoka is November, with an average of 14.8 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 51% on November 23.

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. Tsuruoka experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Tsuruoka. The month with the most rain in Tsuruoka is July, with an average rainfall of 5.8 inches.

The month with the least rain in Tsuruoka is February, with an average rainfall of 2.1 inches.

Snowfall

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

The snowy period of the year lasts for 3.5 months, from November 30 to March 13, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Tsuruoka is January, with an average snowfall of 5.2 inches.

The snowless period of the year lasts for 8.6 months, from March 13 to November 30. The least snow falls around July 24, with an average total accumulation of 0.0 inches.

The length of the day in Tsuruoka varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 27 minutes of daylight; the longest day is June 21, with 14 hours, 53 minutes of daylight.

The earliest sunrise is at 4:15 AM on June 14, and the latest sunrise is 2 hours, 44 minutes later at 6:59 AM on January 6. The earliest sunset is at 4:18 PM on December 6, and the latest sunset is 2 hours, 51 minutes later at 7:09 PM on June 27.

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

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.

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.

Tsuruoka experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.0 months, from June 21 to September 20, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The month with the most muggy days in Tsuruoka is August, with 24.7 days that are muggy or worse.

The least muggy day of the year is March 4, when muggy conditions are essentially unheard of.

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

The windier part of the year lasts for 5.1 months, from November 4 to April 8, with average wind speeds of more than 9.5 miles per hour. The windiest month of the year in Tsuruoka is January, with an average hourly wind speed of 13.0 miles per hour.

The calmer time of year lasts for 6.9 months, from April 8 to November 4. The calmest month of the year in Tsuruoka is July, with an average hourly wind speed of 6.1 miles per hour.

The predominant average hourly wind direction in Tsuruoka is from the west throughout the year.

Tsuruoka 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 4, with an average temperature above 72°F. The month of the year in Tsuruoka with the warmest water is August, with an average temperature of 78°F.

The time of year with cooler water lasts for 4.0 months, from January 4 to May 5, with an average temperature below 54°F. The month of the year in Tsuruoka with the coolest water is March, with an average temperature of 48°F.

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

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

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 Tsuruoka typically lasts for 8.5 months (258 days), from around March 20 to around December 3, rarely starting before March 4 or after April 6, and rarely ending before November 13 or after December 22.

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 Tsuruoka should appear around April 27, only rarely appearing before April 20 or after May 5.

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 19 to August 22, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest month of the year in Tsuruoka is June, with an average of 6.1 kWh.

The darker period of the year lasts for 3.2 months, from November 8 to February 15, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest month of the year in Tsuruoka is December, with an average of 1.4 kWh.

For the purposes of this report, the geographical coordinates of Tsuruoka are 38.722 deg latitude, 139.822 deg longitude, and 43 ft elevation.

The topography within 2 miles of Tsuruoka contains only modest variations in elevation, with a maximum elevation change of 279 feet and an average elevation above sea level of 56 feet. Within 10 miles contains only modest variations in elevation (3,120 feet). Within 50 miles contains large variations in elevation (7,343 feet).

The area within 2 miles of Tsuruoka is covered by cropland (78%) and trees (13%), within 10 miles by trees (43%) and cropland (34%), and within 50 miles by water (49%) and trees (39%).