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Climate and Average Weather Year Round in Guryongpo South Korea

In Guryongpo, the summers are warm, muggy, wet, and mostly cloudy and the winters are very cold, windy, and mostly clear. Over the course of the year, the temperature typically varies from 30°F to 85°F and is rarely below 21°F or above 92°F.

Based on the tourism score, the best times of year to visit Guryongpo for warm-weather activities are from late May to late June and from late August to early October.

Climate in Guryongpo

very coldcoldcoolwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow74%74%38%38%clearovercastprecipitation: 7.4 inprecipitation: 7.4 in1.0 in1.0 inmuggy: 95%muggy: 95%0%0%drydrytourism score: 6.9tourism score: 6.90.00.0
Guryongpo weather by month. Click on each chart for more information.

Average Temperature in Guryongpo

The warm season lasts for 3.1 months, from June 11 to September 14, with an average daily high temperature above 76°F. The hottest day of the year is July 30, with an average high of 85°F and low of 74°F.

The cold season lasts for 3.1 months, from December 4 to March 8, with an average daily high temperature below 51°F. The coldest day of the year is January 19, with an average low of 30°F and high of 42°F.

Average High and Low Temperature in Guryongpo

Average High and Low Temperature in GuryongpowarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1942°FJan 1942°FJul 3085°FJul 3085°F30°F30°F74°F74°FJun 1176°FJun 1176°FSep 1476°FSep 1476°FDec 451°FDec 451°FMar 851°FMar 851°F64°F64°F66°F66°F38°F38°F38°F38°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 Guryongpo

Average Hourly Temperature in GuryongpoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowvery coldcoldcoldcoolcoolcomfortablewarmcomfortablevery coldfreezing
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.

Mayo, Maryland, United States (7,010 miles away) is the far-away foreign place with temperatures most similar to Guryongpo (view comparison).

Compare Guryongpo to another city:

Clouds

In Guryongpo, 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 Guryongpo begins around September 16 and lasts for 6.2 months, ending around March 23. On December 17, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 26% of the time.

The cloudier part of the year begins around March 23 and lasts for 5.8 months, ending around September 16. On July 2, the cloudiest day of the year, the sky is overcast or mostly cloudy 62% of the time, and clear, mostly clear, or partly cloudy 38% of the time.

Cloud Cover Categories in Guryongpo

Cloud Cover Categories in GuryongpoclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Dec 1774%Dec 1774%Jul 238%Jul 238%Sep 1655%Sep 1655%Mar 2357%Mar 2357%NowNowclearovercastmostly cloudymostly clearpartly cloudy
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 Guryongpo varies significantly throughout the year.

The wetter season lasts 3.2 months, from June 12 to September 20, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 46% on July 6.

The drier season lasts 8.8 months, from September 20 to June 12. The smallest chance of a wet day is 11% on December 29.

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 46% on July 6.

Daily Chance of Precipitation in Guryongpo

Daily Chance of Precipitation in GuryongpowetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 646%Jul 646%Dec 2911%Dec 2911%Jun 1229%Jun 1229%Sep 2029%Sep 2029%NowNowrain
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. Guryongpo experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Guryongpo. The most rain falls during the 31 days centered around July 7, with an average total accumulation of 7.4 inches.

The least rain falls around December 30, with an average total accumulation of 1.0 inches.

Average Monthly Rainfall in Guryongpo

Average Monthly Rainfall in GuryongpoJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inJul 77.4 inJul 77.4 inDec 301.0 inDec 301.0 inAug 246.6 inAug 246.6 inMay 53.6 inMay 53.6 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.

Sun

The length of the day in Guryongpo varies significantly over the course of the year. In 2021, the shortest day is December 22, with 9 hours, 43 minutes of daylight; the longest day is June 21, with 14 hours, 36 minutes of daylight.

Hours of Daylight and Twilight in Guryongpo

Hours of Daylight and Twilight in GuryongpoJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2014 hr, 36 minJun 2114 hr, 36 minJun 2112 hr, 10 minSep 2312 hr, 10 minSep 239 hr, 43 minDec 229 hr, 43 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 5:04 AM on June 13, and the latest sunrise is 2 hours, 28 minutes later at 7:32 AM on January 6. The earliest sunset is at 5:07 PM on December 6, and the latest sunset is 2 hours, 35 minutes later at 7:42 PM on June 28.

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

Sunrise & Sunset with Twilight in Guryongpo

Sunrise & Sunset with Twilight in GuryongpoJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:04 AMJun 135:04 AM7:42 PMJun 287:42 PMJun 28Dec 65:07 PMDec 65:07 PM7:32 AMJan 67:32 AMJan 6daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Guryongpo

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.

Guryongpo experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.2 months, from June 15 to September 23, 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 4, with muggy conditions 95% of the time.

The least muggy day of the year is February 13, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Guryongpo

Humidity Comfort Levels in GuryongpomuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 130%Feb 130%95%Aug 495%Aug 4Jun 1524%Jun 1524%Sep 2324%Sep 2324%NowNowmiserablemiserableoppressiveoppressivedrydrymuggymuggycomfortablecomfortable
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 Guryongpo experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.0 months, from November 3 to April 2, with average wind speeds of more than 12.6 miles per hour. The windiest day of the year is December 30, with an average hourly wind speed of 15.7 miles per hour.

The calmer time of year lasts for 7.0 months, from April 2 to November 3. The calmest day of the year is June 14, with an average hourly wind speed of 9.4 miles per hour.

Average Wind Speed in Guryongpo

Average Wind Speed in GuryongpowindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mphDec 3015.7 mphDec 3015.7 mphJun 149.4 mphJun 149.4 mphApr 212.6 mphApr 212.6 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 Guryongpo varies throughout the year.

The wind is most often from the east for 2.6 weeks, from June 5 to June 23 and for 1.3 months, from August 10 to September 19, with a peak percentage of 37% on September 15. The wind is most often from the south for 1.6 months, from June 23 to August 10, with a peak percentage of 35% on July 13. The wind is most often from the west for 7.6 months, from October 16 to June 5, with a peak percentage of 66% on January 1.

Wind Direction in Guryongpo

Wind Direction in GuryongpoWESENWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestnortheastsouth
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

Guryongpo 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 2.5 months, from July 18 to October 2, with an average temperature above 72°F. The day of the year with the warmest water is August 20, with an average temperature of 77°F.

The time of year with cooler water lasts for 4.0 months, from December 31 to April 30, with an average temperature below 58°F. The day of the year with the coolest water is February 23, with an average temperature of 54°F.

Average Water Temperature in Guryongpo

Average Water Temperature in GuryongpowarmcoolJanFebMarAprMayJunJulAugSepOctNovDec50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FAug 2077°FAug 2077°F54°FFeb 2354°FFeb 23Jul 1872°FJul 1872°FOct 272°FOct 272°FDec 3158°FDec 3158°FApr 3058°FApr 3058°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 Guryongpo 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 Guryongpo for general outdoor tourist activities are from late May to late June and from late August to early October, with a peak score in the third week of September.

Tourism Score in Guryongpo

Tourism Score in Guryongpobest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.96.90.00.06.56.55.45.4NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Guryongpo for hot-weather activities is from mid July to late August, with a peak score in the first week of August.

Beach/Pool Score in Guryongpo

Beach/Pool Score in Guryongpobest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.16.10.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Guryongpo typically lasts for 8.6 months (264 days), from around March 12 to around November 30, rarely starting before February 22 or after March 27, and rarely ending before November 13 or after December 17.

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

Time Spent in Various Temperature Bands and the Growing Season in Guryongpogrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 1250%Mar 1250%Nov 3050%Nov 3090%Mar 2790%Mar 2790%Nov 1390%Nov 1310%Feb 2210%Feb 2210%Dec 1710%Dec 170%Jan 120%Jan 12Jul 17100%Jul 17100%NowNowvery coldcoldcoolcomfortablewarmhotfreezing
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 Guryongpo should appear around April 4, only rarely appearing before March 24 or after April 15.

Growing Degree Days in Guryongpo

Growing Degree Days in GuryongpoJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FApr 486°FApr 486°FJun 9900°FJun 9900°FJul 181,800°FJul 181,800°FDec 314,093°FDec 314,093°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 3.8 months, from April 18 to August 11, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is June 1, with an average of 6.5 kWh.

The darker period of the year lasts for 3.1 months, from November 5 to February 7, with an average daily incident shortwave energy per square meter below 3.4 kWh. The darkest day of the year is December 25, with an average of 2.7 kWh.

Average Daily Incident Shortwave Solar Energy in Guryongpo

Average Daily Incident Shortwave Solar Energy in GuryongpobrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 16.5 kWhJun 16.5 kWhDec 252.7 kWhDec 252.7 kWhApr 185.8 kWhApr 185.8 kWhAug 115.8 kWhAug 115.8 kWhNov 53.4 kWhNov 53.4 kWhFeb 73.4 kWhFeb 73.4 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 Guryongpo are 35.990 deg latitude, 129.554 deg longitude, and 23 ft elevation.

The topography within 2 miles of Guryongpo contains significant variations in elevation, with a maximum elevation change of 581 feet and an average elevation above sea level of 128 feet. Within 10 miles contains significant variations in elevation (1,148 feet). Within 50 miles contains very significant variations in elevation (4,137 feet).

The area within 2 miles of Guryongpo is covered by water (35%), trees (28%), grassland (14%), and sparse vegetation (13%), within 10 miles by water (70%) and trees (14%), and within 50 miles by water (62%) and trees (21%).

Data Sources

This report illustrates the typical weather in Guryongpo, 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, Pohang Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Guryongpo.

At a distance of 12 kilometers from Guryongpo, 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 Guryongpo 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.