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Average Weather in Ŭiju North Korea

In Ŭiju, the summers are long, warm, humid, wet, and partly cloudy and the winters are short, freezing, dry, and mostly clear. Over the course of the year, the temperature typically varies from 7°F to 83°F and is rarely below -5°F or above 88°F.

Climate Summary

freezingvery coldcoldcoolwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDec75%75%52%52%clearovercastprecipitation: 10.1 inprecipitation: 10.1 in0.1 in0.1 inmuggy: 91%muggy: 91%0%0%drydrytourism score: 6.9tourism score: 6.90.00.0
Click on each chart for more information.

Based on the tourism score, the best times of year to visit Ŭiju for warm-weather activities are from late May to mid July and from early August to mid September.

Temperature

The warm season lasts for 4.2 months, from May 18 to September 25, with an average daily high temperature above 71°F. The hottest day of the year is August 5, with an average high of 83°F and low of 71°F.

The cold season lasts for 2.9 months, from November 29 to February 25, with an average daily high temperature below 37°F. The coldest day of the year is January 15, with an average low of 7°F and high of 26°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 ŬijuJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfrigidfreezingfreezingcoldcoolcoolcomfortablewarmcoldvery coldvery coldfrigid
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.

La Crosse, Wisconsin, United States (6,227 miles away) is the far-away foreign place with temperatures most similar to Ŭiju (view comparison).

Clouds

In Ŭiju, 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 Ŭiju begins around August 31 and lasts for 6.2 months, ending around March 4. On January 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 75% of the time, and overcast or mostly cloudy 25% of the time.

The cloudier part of the year begins around March 4 and lasts for 5.8 months, ending around August 31. On July 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 48% of the time, and clear, mostly clear, or partly cloudy 52% of the time.

Cloud Cover Categories

Cloud Cover Categories in ŬijuclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jan 2275%Jan 2275%Jul 2252%Jul 2252%Aug 3163%Aug 3163%Mar 463%Mar 463%clearovercastmostly clearpartly 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 Ŭiju varies significantly throughout the year.

The wetter season lasts 3.2 months, from June 3 to September 9, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 52% on July 25.

The drier season lasts 8.8 months, from September 9 to June 3. The smallest chance of a wet day is 2% 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 Ŭiju changes throughout the year.

Rain alone is the most common for 10 months, from January 31 to December 16. The highest chance of a day with rain alone is 52% on July 25.

Snow alone is the most common for 1.5 months, from December 16 to January 31. The highest chance of a day with snow alone is 3% on December 18.

Daily Chance of Precipitation

Daily Chance of Precipitation in ŬijusnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 2552%Jul 2552%Jan 272%Jan 272%Dec 166%Dec 166%Jun 327%Jun 327%Sep 927%Sep 927%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. Ŭiju experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.2 months, from February 26 to December 2, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 28, with an average total accumulation of 10.1 inches.

The rainless period of the year lasts for 2.9 months, from December 2 to February 26. The least rain falls around January 12, with an average total accumulation of 0.0 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.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall in Ŭiju does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in ŬijusnowJanFebMarAprMayJunJulAugSepOctNovDec0 in2 in4 in6 in8 in10 inJan 10.1 inJan 10.1 inJul 80.0 inJul 80.0 inJan 120.1 inJan 120.1 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 Ŭiju varies significantly over the course of the year. In 2018, the shortest day is December 22, with 9 hours, 18 minutes of daylight; the longest day is June 21, with 15 hours, 2 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 4:41 AM on June 15, and the latest sunrise is 2 hours, 53 minutes later at 7:34 AM on January 4. The earliest sunset is at 4:45 PM on December 9, and the latest sunset is 2 hours, 60 minutes later at 7:45 PM on June 28.

Daylight saving time (DST) is not observed in Ŭiju during 2018.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in ŬijuJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 154:41 AMJun 154:41 AM7:45 PMJun 287:45 PMJun 28Dec 94:45 PMDec 94:45 PM7:34 AMJan 47:34 AMJan 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. 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.

Ŭiju experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.9 months, from June 15 to September 11, during which time the comfort level is muggy, oppressive, or miserable at least 23% of the time. The muggiest day of the year is July 30, with muggy conditions 91% of the time.

The least muggy day of the year is February 24, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in ŬijumuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 240%Feb 240%91%Jul 3091%Jul 30Jun 1523%Jun 1523%Sep 1123%Sep 1123%drydrymuggymuggyoppressiveoppressivemiserablemiserable
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 Ŭiju experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.3 months, from October 14 to May 25, with average wind speeds of more than 8.3 miles per hour. The windiest day of the year is March 9, with an average hourly wind speed of 9.9 miles per hour.

The calmer time of year lasts for 4.7 months, from May 25 to October 14. The calmest day of the year is August 26, with an average hourly wind speed of 6.7 miles per hour.

Average Wind Speed

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 Ŭiju varies throughout the year.

The wind is most often from the south for 5.0 months, from April 4 to September 3, with a peak percentage of 59% on July 22. The wind is most often from the north for 7.0 months, from September 3 to April 4, with a peak percentage of 62% on January 1.

Wind Direction

Wind Direction in ŬijuNSNJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%southnorthwesteast
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

Ŭiju 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 extreme seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.3 months, from June 27 to October 5, with an average temperature above 67°F. The day of the year with the warmest water is August 20, with an average temperature of 76°F.

The time of year with cooler water lasts for 3.5 months, from December 22 to April 7, with an average temperature below 42°F. The day of the year with the coolest water is February 19, with an average temperature of 33°F.

Average Water Temperature

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 Ŭiju 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 Ŭiju for general outdoor tourist activities are from late May to mid July and from early August to mid September, with a peak score in the first week of September.

Tourism Score

Tourism Score in Ŭijubest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.96.90.00.06.96.96.06.0precipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 Ŭiju for hot-weather activities is from early July to late August, with a peak score in the first week of August.

Beach/Pool Score

Beach/Pool Score in Ŭijubest timeJanFebMarAprMayJunJulAugSepOctNovDec02468105.75.70.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/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 Ŭiju typically lasts for 6.6 months (202 days), from around April 4 to around October 23, rarely starting before March 20 or after April 19, and rarely ending before October 7 or after November 9.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Ŭijugrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 450%Apr 450%Oct 2350%Oct 2390%Apr 1990%Apr 1990%Oct 790%Oct 710%Mar 2010%Mar 2010%Nov 910%Nov 90%Feb 10%Feb 1Jul 11100%Jul 11100%frigidfreezingcomfortablewarmcoolvery coldhotcold
The percentage of time spent in various temperature 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 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 Ŭiju should appear around April 23, only rarely appearing before April 15 or after May 2.

Growing Degree Days

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 3.1 months, from April 23 to July 25, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest day of the year is May 31, with an average of 6.5 kWh.

The darker period of the year lasts for 3.0 months, from November 2 to February 1, with an average daily incident shortwave energy per square meter below 3.0 kWh. The darkest day of the year is December 19, with an average of 2.2 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 Ŭiju are 40.199 deg latitude, 124.532 deg longitude, and 43 ft elevation.

The topography within 2 miles of Ŭiju contains only modest variations in elevation, with a maximum elevation change of 344 feet and an average elevation above sea level of 76 feet. Within 10 miles contains only modest variations in elevation (1,680 feet). Within 50 miles contains very significant variations in elevation (4,803 feet).

The area within 2 miles of Ŭiju is covered by cropland (39%), sparse vegetation (33%), and trees (11%), within 10 miles by cropland (31%) and trees (31%), and within 50 miles by trees (47%) and cropland (20%).

Data Sources

This report illustrates the typical weather in Ŭiju, 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 Ŭiju.

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

The stations contributing to this reconstruction are: Pyongyang Sunan International Airport (58%, 146 kilometers, southeast) and Shenyang Taoxian International Airport (42%, 183 kilometers, northwest).

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.

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.