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Climate and Average Weather Year Round at Ulsan Airport South Korea

At Ulsan Airport, 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 28°F to 85°F and is rarely below 20°F or above 93°F.

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

Climate at Ulsan Airport

very coldcoldcoolcomfortablewarmwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow75%75%36%36%clearovercastprecipitation: 8.2 inprecipitation: 8.2 in1.0 in1.0 inmuggy: 92%muggy: 92%0%0%drydrytourism score: 6.7tourism score: 6.70.00.0
Ulsan Airport weather by month. Click on each chart for more information.

The hot season lasts for 3.1 months, from June 12 to September 15, with an average daily high temperature above 77°F. The hottest month of the year at Ulsan Airport is August, with an average high of 83°F and low of 72°F.

The cold season lasts for 3.1 months, from December 3 to March 5, with an average daily high temperature below 51°F. The coldest month of the year at Ulsan Airport is January, with an average low of 28°F and high of 43°F.

Average High and Low Temperature at Ulsan Airport

Average High and Low Temperature at Ulsan AirporthotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°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°FAug 285°FAug 285°F28°F28°F74°F74°FJun 1277°FJun 1277°FSep 1577°FSep 1577°FDec 351°FDec 351°FMar 551°FMar 551°F63°F63°F65°F65°F36°F36°F36°F36°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.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 43°F46°F54°F64°F72°F77°F82°F83°F77°F69°F58°F47°F
Temp. 35°F38°F46°F56°F64°F70°F77°F78°F70°F61°F49°F39°F
Low 28°F32°F39°F48°F56°F64°F72°F72°F64°F53°F42°F32°F

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 at Ulsan Airport

Average Hourly Temperature at Ulsan AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmwarm
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.

Selby-on-the-Bay, Maryland, United States (7,038 miles away) is the far-away foreign place with temperatures most similar to Ulsan Airport (view comparison).

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At Ulsan Airport, 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 at Ulsan Airport begins around September 14 and lasts for 6.2 months, ending around March 21.

The clearest month of the year at Ulsan Airport is December, during which on average the sky is clear, mostly clear, or partly cloudy 74% of the time.

The cloudier part of the year begins around March 21 and lasts for 5.8 months, ending around September 14.

The cloudiest month of the year at Ulsan Airport is July, during which on average the sky is overcast or mostly cloudy 59% of the time.

Cloud Cover Categories at Ulsan Airport

Cloud Cover Categories at Ulsan AirportclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Dec 1675%Dec 1675%Jul 136%Jul 136%Sep 1456%Sep 1456%Mar 2156%Mar 2156%NowNowclearovercastmostly clearmostly cloudypartly 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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 30%37%44%47%48%56%59%51%43%31%29%26%
Clearer 70%63%56%53%52%44%41%49%57%69%71%74%

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

The wetter season lasts 3.3 months, from June 9 to September 20, with a greater than 29% chance of a given day being a wet day. The month with the most wet days at Ulsan Airport is July, with an average of 13.5 days with at least 0.04 inches of precipitation.

The drier season lasts 8.7 months, from September 20 to June 9. The month with the fewest wet days at Ulsan Airport is December, with an average of 3.8 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 at Ulsan Airport is July, with an average of 13.5 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 47% on July 5.

Daily Chance of Precipitation at Ulsan Airport

Daily Chance of Precipitation at Ulsan AirportwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 547%Jul 547%Dec 2811%Dec 2811%Jun 929%Jun 929%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).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 3.5d4.7d6.8d7.7d8.0d10.1d13.5d12.9d9.3d5.8d5.0d3.6d
Mixed 0.3d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d
Snow 0.1d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d
Any 4.0d5.0d6.9d7.7d8.0d10.1d13.5d12.9d9.3d5.8d5.0d3.8d

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. Ulsan Airport experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Ulsan Airport. The month with the most rain at Ulsan Airport is July, with an average rainfall of 7.6 inches.

The month with the least rain at Ulsan Airport is December, with an average rainfall of 1.1 inches.

Average Monthly Rainfall at Ulsan Airport

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 snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 1.1″1.8″2.7″3.8″4.1″6.1″7.6″6.9″5.6″2.4″1.8″1.1″

The length of the day at Ulsan Airport varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 45 minutes of daylight; the longest day is June 21, with 14 hours, 34 minutes of daylight.

Hours of Daylight and Twilight at Ulsan Airport

Hours of Daylight and Twilight at Ulsan AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2014 hr, 34 minJun 2114 hr, 34 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 45 minDec 219 hr, 45 minDec 21nightnightdayNowNow
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.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 10.1h10.9h12.0h13.1h14.1h14.5h14.3h13.5h12.4h11.3h10.3h9.8h

The earliest sunrise is at 5:06 AM on June 13, and the latest sunrise is 2 hours, 26 minutes later at 7:32 AM on January 7. The earliest sunset is at 5:09 PM on December 5, and the latest sunset is 2 hours, 33 minutes later at 7:42 PM on June 29.

Daylight saving time (DST) is not observed at Ulsan Airport during 2024.

Sunrise & Sunset with Twilight at Ulsan Airport

Sunrise & Sunset with Twilight at Ulsan AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:06 AMJun 135:06 AM7:42 PMJun 297:42 PMJun 29Dec 55:09 PMDec 55:09 PM7:32 AMJan 77:32 AMJan 7daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. 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.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth at Ulsan Airport

Solar Elevation and Azimuth at Ulsan AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM000010101010202020203030303040404050505060607000001010101020202020303030304040405050607078NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

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.

Moon Rise, Set & Phases at Ulsan Airport

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.

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.

Ulsan Airport experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.2 months, from June 14 to September 20, during which time the comfort level is muggy, oppressive, or miserable at least 23% of the time. The month with the most muggy days at Ulsan Airport is August, with 25.8 days that are muggy or worse.

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

Humidity Comfort Levels at Ulsan Airport

Humidity Comfort Levels at Ulsan AirportmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%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%92%Aug 392%Aug 3Jun 1423%Jun 1423%Sep 2023%Sep 2023%NowNowoppressiveoppressivedrydrymuggymuggymiserablemiserablecomfortablecomfortable
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.1d0.7d8.3d25.2d25.8d9.9d0.9d0.0d0.0d

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 at Ulsan Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.0 months, from November 9 to April 8, with average wind speeds of more than 11.9 miles per hour. The windiest month of the year at Ulsan Airport is January, with an average hourly wind speed of 14.4 miles per hour.

The calmer time of year lasts for 7.0 months, from April 8 to November 9. The calmest month of the year at Ulsan Airport is June, with an average hourly wind speed of 9.6 miles per hour.

Average Wind Speed at Ulsan Airport

Average Wind Speed at Ulsan AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mph22 mph22 mphJan 414.5 mphJan 414.5 mphJun 69.3 mphJun 69.3 mphNov 911.9 mphNov 911.9 mphApr 811.9 mphApr 811.9 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 14.413.512.611.810.49.610.210.511.211.312.414.0

The predominant average hourly wind direction at Ulsan Airport varies throughout the year.

The wind is most often from the east for 2.9 weeks, from June 3 to June 23 and for 1.2 months, from August 8 to September 13, with a peak percentage of 36% on September 7. The wind is most often from the south for 1.5 months, from June 23 to August 8, with a peak percentage of 35% on July 12. The wind is most often from the west for 7.2 months, from October 28 to June 3, with a peak percentage of 56% on January 1.

Wind Direction at Ulsan Airport

Wind Direction at Ulsan AirportWESENWJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Ulsan Airport 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 2.4 months, from July 17 to September 29, with an average temperature above 73°F. The month of the year at Ulsan Airport with the warmest water is August, with an average temperature of 77°F.

The time of year with cooler water lasts for 4.2 months, from December 28 to May 4, with an average temperature below 59°F. The month of the year at Ulsan Airport with the coolest water is February, with an average temperature of 55°F.

Average Water Temperature at Ulsan Airport

Average Water Temperature at Ulsan AirportwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FAug 1878°FAug 1878°F55°FFeb 2855°FFeb 28Jul 1773°FJul 1773°FSep 2973°FSep 2973°FDec 2859°FDec 2859°FMay 459°FMay 459°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 57°F55°F55°F58°F61°F67°F73°F77°F75°F70°F65°F61°F

To characterize how pleasant the weather is at Ulsan Airport 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 Ulsan Airport 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 second week of September.

Tourism Score at Ulsan Airport

Tourism Score at Ulsan Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.76.70.00.06.36.35.55.5NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism 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 Ulsan Airport for hot-weather activities is from mid July to late August, with a peak score in the first week of August.

Beach/Pool Score at Ulsan Airport

Beach/Pool Score at Ulsan AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.06.00.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/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.

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 at Ulsan Airport typically lasts for 8.2 months (251 days), from around March 15 to around November 22, rarely starting before February 27 or after April 2, and rarely ending before November 7 or after December 8.

Time Spent in Various Temperature Bands and the Growing Season at Ulsan Airport

Time Spent in Various Temperature Bands and the Growing Season at Ulsan Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 1550%Mar 1550%Nov 2250%Nov 2290%Apr 290%Apr 290%Nov 790%Nov 710%Feb 2710%Feb 2710%Dec 810%Dec 80%Jan 160%Jan 16Jul 25100%Jul 25100%freezingvery coldcoldcoolcomfortablewarmhot
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 at Ulsan Airport should appear around April 4, only rarely appearing before March 24 or after April 15.

Growing Degree Days at Ulsan Airport

Growing Degree Days at Ulsan AirportJanFebMarAprMayJunJulAugSepOctNovDec0°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 10900°FJun 10900°FJul 201,800°FJul 201,800°FDec 314,018°FDec 314,018°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

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 16 to August 10, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year at Ulsan Airport is May, with an average of 6.3 kWh.

The darker period of the year lasts for 3.0 months, from November 4 to February 6, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year at Ulsan Airport is December, with an average of 2.7 kWh.

Average Daily Incident Shortwave Solar Energy at Ulsan Airport

Average Daily Incident Shortwave Solar Energy at Ulsan AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 316.5 kWhMay 316.5 kWhDec 92.7 kWhDec 92.7 kWhApr 165.7 kWhApr 165.7 kWhAug 105.7 kWhAug 105.7 kWhFeb 63.5 kWhFeb 63.5 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 3.03.74.75.76.36.15.95.64.84.13.12.7

For the purposes of this report, the geographical coordinates of Ulsan Airport are 35.593 deg latitude, 129.352 deg longitude, and 36 ft elevation.

The topography within 2 miles of Ulsan Airport contains very significant variations in elevation, with a maximum elevation change of 968 feet and an average elevation above sea level of 185 feet. Within 10 miles contains very significant variations in elevation (2,546 feet). Within 50 miles contains large variations in elevation (4,150 feet).

The area within 2 miles of Ulsan Airport is covered by sparse vegetation (50%), trees (22%), and cropland (18%), within 10 miles by trees (33%) and water (22%), and within 50 miles by water (55%) and trees (22%).

This report illustrates the typical weather at Ulsan Airport, 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

Ulsan Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Pohang Airport, Busan / Gimhae International Airport, Busan, Daegu International Airport, Taegu, Andong, Sacheon Airport, and Yechon Ab.

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 © OpenStreetMap contributors.

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.

Please review our full terms contained on our Terms of Service page.