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Average Weather in Hyesan-dong North Korea

In Hyesan-dong, the summers are comfortable and wet, the winters are frigid and dry, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from -4°F to 75°F and is rarely below -16°F or above 83°F.

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

Climate Summary

freezingcoldcoolcomfortablecoolcoldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow70%70%48%48%clearovercastprecipitation: 5.6 inprecipitation: 5.6 in0.1 in0.1 inmuggy: 28%muggy: 28%0%0%drydrytourism score: 5.6tourism score: 5.60.00.0
Click on each chart for more information.

Temperature

The warm season lasts for 3.8 months, from May 28 to September 22, with an average daily high temperature above 63°F. The hottest day of the year is August 3, with an average high of 75°F and low of 59°F.

The cold season lasts for 3.3 months, from November 28 to March 4, with an average daily high temperature below 28°F. The coldest day of the year is January 18, with an average low of -4°F and high of 16°F.

Average High and Low Temperature

Average High and Low Temperature in Hyesan-dongwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-20°F-20°F-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1816°FJan 1816°FAug 375°FAug 375°F-4°F-4°F59°F59°FMay 2863°FMay 2863°FSep 2263°FSep 2263°FNov 2828°FNov 2828°FMar 428°FMar 428°F42°F42°F42°F42°F9°F9°F9°F9°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 Hyesan-dongJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfrigidfrigidfrigidfrigidfreezingfreezingvery coldcoldcoolcomfortablecoldvery cold
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.

Bonnyville, Canada (4,974 miles away); Belcourt, North Dakota, United States (5,560 miles); and Atikokan, Canada (5,759 miles) are the far-away foreign places with temperatures most similar to Hyesan-dong (view comparison).

Clouds

In Hyesan-dong, 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 Hyesan-dong begins around September 8 and lasts for 3.0 months, ending around December 9. On October 19, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 70% of the time, and overcast or mostly cloudy 30% of the time.

The cloudier part of the year begins around December 9 and lasts for 9.0 months, ending around September 8. On July 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 52% of the time, and clear, mostly clear, or partly cloudy 48% of the time.

Cloud Cover Categories

Cloud Cover Categories in Hyesan-dongclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 1970%Oct 1970%Jul 2248%Jul 2248%Sep 859%Sep 859%Dec 959%Dec 959%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 Hyesan-dong varies significantly throughout the year.

The wetter season lasts 4.5 months, from April 29 to September 12, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 51% on July 16.

The drier season lasts 7.5 months, from September 12 to April 29. The smallest chance of a wet day is 1% on January 27.

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 in Hyesan-dong changes throughout the year.

Rain alone is the most common for 8.0 months, from March 19 to November 17. The highest chance of a day with rain alone is 51% on July 16.

Snow alone is the most common for 4.0 months, from November 17 to March 19. The highest chance of a day with snow alone is 5% on November 25.

Daily Chance of Precipitation

Daily Chance of Precipitation in Hyesan-dongsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 1651%Jul 1651%Jan 271%Jan 271%Mar 198%Mar 198%Nov 1711%Nov 1711%Jan 13%Jan 13%Apr 2926%Apr 2926%Sep 1226%Sep 1226%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. Hyesan-dong experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.1 months, from April 1 to November 3, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 23, with an average total accumulation of 5.6 inches.

The rainless period of the year lasts for 4.9 months, from November 3 to April 1. The least rain falls around January 7, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall

Average Monthly Rainfall in Hyesan-dongrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inJul 235.6 inJul 235.6 inJan 70.0 inJan 70.0 inApr 10.5 inApr 10.5 inNov 30.5 inNov 30.5 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. Hyesan-dong experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.9 months, from October 17 to April 15, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around November 17, with an average total liquid-equivalent accumulation of 0.3 inches.

The snowless period of the year lasts for 6.1 months, from April 15 to October 17. The least snow falls around July 17, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in Hyesan-dongsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inNov 170.3 inNov 170.3 inJul 170.0 inJul 170.0 inMar 40.2 inMar 40.2 inOct 170.1 inOct 170.1 inApr 150.1 inApr 150.1 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 Hyesan-dong varies significantly over the course of the year. In 2021, the shortest day is December 22, with 9 hours, 11 minutes of daylight; the longest day is June 21, with 15 hours, 10 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in Hyesan-dongJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2015 hr, 10 minJun 2115 hr, 10 minJun 2112 hr, 11 minSep 2312 hr, 11 minSep 239 hr, 11 minDec 229 hr, 11 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 4:53 AM on June 15, and the latest sunrise is 3 hours, 0 minutes later at 7:53 AM on January 4. The earliest sunset is at 4:57 PM on December 9, and the latest sunset is 3 hours, 7 minutes later at 8:04 PM on June 27.

Daylight saving time (DST) is not observed in Hyesan-dong during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in Hyesan-dongJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 154:53 AMJun 154:53 AM8:04 PMJun 278:04 PMJun 27Dec 94:57 PMDec 94:57 PM7:53 AMJan 47:53 AMJan 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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.

Hyesan-dong experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 1.7 months, from July 8 to August 29, during which time the comfort level is muggy, oppressive, or miserable at least 7% of the time. The muggiest day of the year is August 2, with muggy conditions 28% of the time.

The least muggy day of the year is March 7, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in Hyesan-dongmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 70%Mar 70%Aug 228%Aug 228%Jul 87%Jul 87%Aug 297%Aug 297%drydryhumidhumidcomfortablecomfortable
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 Hyesan-dong experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from October 25 to May 24, with average wind speeds of more than 5.1 miles per hour. The windiest day of the year is March 19, with an average hourly wind speed of 6.9 miles per hour.

The calmer time of year lasts for 5.0 months, from May 24 to October 25. The calmest day of the year is August 9, with an average hourly wind speed of 3.3 miles per hour.

Average Wind Speed

Average Wind Speed in Hyesan-dongwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphMar 196.9 mphMar 196.9 mphAug 93.3 mphAug 93.3 mphOct 255.1 mphOct 255.1 mphMay 245.1 mphMay 245.1 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 Hyesan-dong is from the west throughout the year.

Wind Direction

Wind Direction in Hyesan-dongJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Best Time of Year to Visit

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

Tourism Score

Tourism Score in Hyesan-dongJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.65.60.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Hyesan-dong for hot-weather activities is from late July to mid August, with a peak score in the first week of August.

Beach/Pool Score

Beach/Pool Score in Hyesan-dongJanFebMarAprMayJunJulAugSepOctNovDec002244668810101.61.60.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature
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 Hyesan-dong typically lasts for 4.4 months (134 days), from around May 15 to around September 26, rarely starting before April 29 or after May 31, and rarely ending before September 11 or after October 11.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Hyesan-donggrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 1550%May 1550%Sep 2650%Sep 2650%May 3190%May 3190%Sep 1190%Sep 1190%Apr 2910%Apr 2910%Oct 1110%Oct 1110%0%Feb 210%Feb 21Jul 21100%Jul 21100%NowNowfrigidfreezingcoolcomfortablecoldwarmvery cold
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 Hyesan-dong should appear around May 20, only rarely appearing before May 9 or after May 31.

Growing Degree Days

Growing Degree Days in Hyesan-dongJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°F1,400°F1,400°F1,600°F1,600°FMay 2090°FMay 2090°FAug 5900°FAug 5900°FDec 311,525°FDec 311,525°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 3.7 months, from April 15 to August 4, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is June 2, with an average of 6.7 kWh.

The darker period of the year lasts for 2.9 months, from November 7 to February 3, with an average daily incident shortwave energy per square meter below 3.0 kWh. The darkest day of the year is December 20, with an average of 2.1 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Hyesan-dongbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 26.7 kWhJun 26.7 kWhDec 202.1 kWhDec 202.1 kWhApr 155.8 kWhApr 155.8 kWhAug 45.8 kWhAug 45.8 kWhNov 73.0 kWhNov 73.0 kWhFeb 33.0 kWhFeb 33.0 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.

Topography

For the purposes of this report, the geographical coordinates of Hyesan-dong are 41.398 deg latitude, 128.179 deg longitude, and 2,415 ft elevation.

The topography within 2 miles of Hyesan-dong contains very significant variations in elevation, with a maximum elevation change of 1,089 feet and an average elevation above sea level of 2,581 feet. Within 10 miles contains very significant variations in elevation (3,245 feet). Within 50 miles contains large variations in elevation (7,608 feet).

The area within 2 miles of Hyesan-dong is covered by sparse vegetation (31%), bare soil (25%), cropland (21%), and trees (16%), within 10 miles by trees (41%) and sparse vegetation (30%), and within 50 miles by trees (63%) and sparse vegetation (11%).

Data Sources

This report illustrates the typical weather in Hyesan-dong, 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 is only a single weather station, Kimchaek, in our network suitable to be used as a proxy for the historical temperature and dew point records of Hyesan-dong.

At a distance of 118 kilometers from Hyesan-dong, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Hyesan-dong according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.