Rainfall can be heavy especially in July and August. Two thirds of the annual rainfall occur in summer. However, between periods of bad weather, there can also be sunny days, which may be hot. Especially between late June and early August, an almost stationary front called Changma moves over Korea, which can cause heavy rainfall sometimes associated with floods but also fog, low clouds and drizzle.
In the second part of summer, it goes a bit better, and the amount of sunshine increases, although typhoons can add more rain. Being characterized by different periods of bad weather, summer is the least sunny season, at least if you consider the length of the day.
In addition, it usually rains less than in spring. As mentioned, the coldest areas are those of the interior. On the other hand, summer is hot and muggy. The average hourly wind speed in Seoul experiences mild seasonal variation over the course of the year. The windier part of the year lasts for 6.
The windiest month of the year in Seoul is February , with an average hourly wind speed of 9. The calmer time of year lasts for 5. The calmest month of the year in Seoul is June , with an average hourly wind speed of 6. The wind is most often from the west for 5. The wind is most often from the east for 1. The wind is most often from the north for 2. Seoul is located near a large body of water e. 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 3. The time of year with cooler water lasts for 3. To characterize how pleasant the weather is in Seoul throughout the year, we compute two travel scores. Based on this score, the best times of year to visit Seoul for general outdoor tourist activities are from late May to early July and from late August to early October , with a peak score in the second week of June.
Based on this score, the best time of year to visit Seoul for hot-weather activities is from mid July to late August , with a peak score in the second week of August. For each hour between AM and PM of each day in the analysis period to , 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. The growing season in Seoul typically lasts for 7. 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.
Based on growing degree days alone, the first spring blooms in Seoul should appear around April 12 , only rarely appearing before April 3 or after April 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. The brightest month of the year in Seoul is June , with an average of 6. The darker period of the year lasts for 2. The darkest month of the year in Seoul is December , with an average of 2. For the purposes of this report, the geographical coordinates of Seoul are The topography within 2 miles of Seoul contains very significant variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of feet.
Within 10 miles contains very significant variations in elevation 2, feet. Within 50 miles contains large variations in elevation 4, feet. This report illustrates the typical weather in Seoul, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Seoul.
Compare Temperature by Country. South Korea Trade Surplus Plummets. South Korea Business Confidence Unchanged. Calendar Forecast Indicators News. More Indicators. National Statistics World Bank. We have a plan for your needs. The wettest month is July with an average of mm of rain.. Average Temperature: Seoul. Loading weather data. Please wait…. Average Rainfall: Seoul Loading weather data.
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