Yeosu Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Yeosu, Jeollanam-Do, South Korea. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.
Yeosu experiences significant rain/snowfall throughout the year, averaging 1495 mm (59 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct dry and rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The climate in Yeosu shows significant variation throughout the year. Expect 272 mm (11 in) of precipitation during the wettest month July, distributed over 15 rainy days.
In contrast, December offers drier and sunnier days, with around 32 mm (1.3 in) of rainfall over 5 rainy days.
July, the wettest month, has a maximum daytime temperature of 27°C (81°F). The city receives 149 hours of sunshine in this period. During the driest month December you can expect a temperature of 10°C (50°F). For more detailed insights into the city's temperatures, visit our Yeosu Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Explore Yeosu's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Yeosu spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in South Korea: City Comparison
The map below shows the annual precipitation across South Korea. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
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almost none
Yeosu vs World: Rainfall Compared
Yeosu's average annual precipitation is 1495 mm (59 in). Let's compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.
Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
The proximity of a location to a large body of water can significantly affect its rainfall patterns:
- Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
- Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.
For more detailed information about Yeosu's weather, including sunshine hours, humidity levels, and temperature data, visit our Yeosu Climate page.
