April Weather in Yeosu, South Korea

Last updated: October 30, 2025

In April, Yeosu, South Korea experiences a mild climate marked by a maximum temperature of 19°C (66°F) and an average of 13°C (56°F), while nighttime lows can dip to a refreshing 5°C (42°F). This transitional month also brings a total of 108 mm (4.3 in) of precipitation across seven rainy days, contributing to a humidity level of about 75%. Visitors can expect a blend of pleasant spring days and occasional showers, making it an ideal time to explore the beauty of Yeosu's coastal scenery and vibrant flora.

April Temperature in Yeosu

In April, Yeosu, South Korea, emerges from the chill of winter, welcoming a delightful transition into spring. With temperatures ranging from a minimum of 5°C (42°F) to a pleasant maximum of 19°C (66°F), the city experiences a significant warming trend. The average temperature of 13°C (56°F) marks a comfortable increase compared to the preceding months, inviting both locals and visitors to enjoy the blossoming landscapes. As the days grow longer and more vibrant, April sets the stage for the warmth of May, making it a perfect time to explore Yeosu's stunning natural beauty and cultural offerings.

April Weather in Yeosu: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Yeosu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yeosu, April typically has an average temperature of 13°C (56°F), with highs reaching up to 19°C (66°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec394149566470778174655543
Data source: Temperature data for Yeosu generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Yeosu

In April, Yeosu experiences a noticeable uptick in precipitation, with an average of 108 mm (4.3 in) spread over seven days of rain. This marks a significant increase from March’s 92 mm (3.6 in), signaling the onset of the wetter months as the region transitions into spring. The rainfall in April not only contributes to the lush green landscapes characteristic of this time of year but also sets the stage for even greater precipitation in the following months, particularly in May and June, where averages leap to 146 mm (5.8 in) and 188 mm (7.4 in) respectively. Such patterns highlight a trend of escalating rainfall as spring advances, ultimately leading to the heavier downpours typical of summer.

April Precipitation Trends in Yeosu

The chart displays monthly precipitation patterns in Yeosu, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Yeosu, April typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec3241921081461882751732591132623
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Yeosu

In April, Yeosu, South Korea, experiences a noticeable increase in humidity, reaching 75%. This rise marks a departure from the steadily declining trend seen in the preceding months of January (72%) through March (65%). As spring progresses, the humidity levels continue to climb, setting the stage for the warmer and more humid months ahead. With May and June expected to push humidity levels substantially higher—85% and 87% respectively—April serves as a transitional month that bridges the cooler spring air with the sultry summer climate that defines Yeosu's weather. This gradual increase not only enhances the lush greenery of the region but also signals the arrival of a more tropical feel as the year unfolds.

April Average Humidity in Yeosu

This chart illustrates the average monthly humidity levels in Yeosu, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Yeosu is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%67%65%75%83%87%95%93%80%77%75%73%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Yeosu

In April, Yeosu, South Korea, experiences a significant increase in UV exposure, with the UV Index reaching an impressive 9, placing it in the very high exposure category. This marked rise from March's UV Index of 7 indicates that sun safety becomes increasingly vital as the days grow longer and sunnier. With a burn time of just 15 minutes, it's essential for locals and visitors alike to take precautions against skin damage. As we transition into May, the index escalates to 10, maintaining that intense sunlit environment. This trend highlights the importance of staying informed about the UV Index, especially as the summer months approach. For detailed insights into the UV levels throughout the year, check out Yeosu UV Index.

Maximum UV Index Levels in Yeosu for April

The chart shows the monthly maximum UV Index (UVI) for Yeosu in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Yeosu typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec45791011121210753
Data source: Yeosu April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Yeosu

April in Yeosu, South Korea, shines brightly with 280 hours of sunshine, marking a vibrant start to the spring season. This increase in daylight continues the trend set from the previous months, as sunshine hours steadily rise from 198 hours in January to 273 hours in March. April's radiant weather signals an exciting transition, as it paves the way for May's peak of 306 hours. The gradual buildup of daylight not only enhances the beauty of Yeosu's stunning coastal scenery but also invites locals and tourists alike to embrace outdoor activities as the city awakens from winter's grasp. As the sunshine persists through the spring and summer months, visitors are treated to the warm embrace of Yeosu’s natural charm.

Monthly Sunshine Duration in Yeosu: April Highlighted

The April sunshine duration represents the total number of hours Yeosu experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec198h240h273h280h306h301h275h300h257h268h241h240h
Data source: Yeosu April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Yeosu During April

In Yeosu, South Korea, April brings a slight dip in the likelihood of sunny weather, with a 41% chance of sunshine. This marks a continuation of a gradual decline from the sunnier winter months, where January enjoys a 54% chance and February follows closely at 50%. By March, the sunshine odds drop to 40%, hinting at a transition into spring. While April's forecast remains relatively consistent, it remains notably lower compared to the more promising days of autumn, where October boasts a 59% chance of sunshine. As we move through the year, this trend underscores April as a transitional month—inviting the beauty of spring, yet still touched by the lingering clouds of early seasonal changes.

Percentage of Sunny Days in April in Yeosu

The chart illustrates the percentage of sunny days in Yeosu throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Yeosu experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec54%50%40%41%40%34%19%32%34%59%66%73%
Data source: Yeosu April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Yeosu in April

As spring unfolds in Yeosu, South Korea, April heralds a delightful increase in daylight, offering 13 hours of sun-drenched days. This marks a notable rise from March’s 11 hours, signaling a vibrant transition into the warmer months. Following April, May will maintain this 13-hour span, while daylight continues its steady ascent, reaching 14 hours in June and July. This trend reflects the region’s gradual shift towards summer, where longer days encourage outdoor exploration and enhanced leisure activities. The pattern of increasing daylight in the spring months, followed by a peak in the summer, illustrates the rhythmic nature of the seasons in Yeosu, inviting residents and visitors alike to bask in the beauty of extended daylight.

Average Daylight Hours in Yeosu for April

The chart illustrates the variation in daylight duration in Yeosu throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 5m10h 54m11h 58m13h 3m13h 58m14h 26m14h 12m13h 24m12h 21m11h 16m10h 20m9h 51m
Data source: Yeosu daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Yeosu

As spring unfolds in Yeosu, South Korea, the winds take on a refreshing character in April, with an average speed of 5.1 m/s (11 mph). This slight uptick from March's 4.5 m/s (10 mph) signals the transition into more dynamic weather patterns, embodying the essence of springtime breezes. Interestingly, April's winds are notably stronger than those in the preceding months, hinting at the warmth and vitality that the season brings. Following this peak, the winds gradually mellow in May to 4.7 m/s (11 mph), before dipping significantly during the summer months. This pattern not only illustrates the shifting moods of Yeosu's climate but also sets the stage for a refreshing summer that follows the vivid winds of spring.

Average April Wind Speed in Yeosu

The chart displays monthly wind speed patterns in Yeosu, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.85.64.55.1 m/s4.73.74.34.15.74.14.84.7
Data source: Yeosu April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Yeosu Compares to Other Months

Weather in Yeosu varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Yeosu, focusing on differences in temperature, rainfall, humidity, and UV levels.

April and January showcase distinctly different weather patterns. In April, temperatures range from a minimum of 5°C (42°F) to a maximum of 19°C (66°F), with an average of 13°C (56°F). This month is characterized by a higher level of precipitation, accumulating 108 mm (4.3 in) over approximately 7 days, alongside a humidity level of 75%. In contrast, January presents much cooler conditions, with temperatures dipping to a minimum of -8°C (18°F) and reaching an average high of only 15°C (59°F). Precipitation is significantly lower, at just 32 mm (1.3 in) over 3 days, and humidity sits slightly lower at 72%. For a more detailed look at January weather, visit Yeosu weather in January.

April and February display contrasting weather patterns, with April generally being milder and wetter. In April, temperatures range from a minimum of 5°C (42°F) to a maximum of 19°C (66°F), with an average around 13°C (56°F). This month also sees more precipitation, with 108 mm (4.3 in) falling over approximately 7 days, resulting in a humidity level of 75%. In contrast, February experiences much colder temperatures, with a minimum of -6°C (22°F) and a maximum of 14°C (57°F), averaging just 5°C (41°F). Additionally, it has significantly lower precipitation at 41 mm (1.6 in) over 4 days, contributing to a lower humidity of 67%. For more detailed information on February's weather, you can visit Yeosu weather in February.

In comparing the weather between March and April, April tends to be noticeably warmer, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 19°C (66°F), while March sees cooler temperatures, beginning at 0°C (33°F) and peaking at 15°C (60°F). The average temperature in April is also higher at 13°C (56°F) compared to March's average of 9°C (49°F). Additionally, April experiences slightly more precipitation, with 108 mm (4.3 in) over 7 days, compared to March's total of 92 mm (3.6 in) also over 7 days. Humidity levels are higher in April at 75%, while March maintains a lower humidity of 65%. For a detailed overview of March's weather, you can check Yeosu weather in March.

April and May present a distinct contrast in weather patterns. In April, temperatures range from a minimum of 5°C (42°F) to a maximum of 19°C (66°F), with an average of 13°C (56°F). The month experiences a total precipitation of 108 mm (4.3 in) over 7 days, accompanied by a humidity level of 75%. In comparison, May brings warmer conditions, with temperatures starting at a minimum of 11°C (52°F) and reaching up to 25°C (77°F), averaging 18°C (64°F). However, rainfall increases slightly to 146 mm (5.8 in) spread over 8 days, and humidity rises to 83%. This transition marks May as not only warmer but also more humid and wetter. For a closer look at May's conditions, check out Yeosu weather in May.

In comparing the weather between April and June, it's clear that June welcomes warmer temperatures, with a minimum of 17°C (62°F) and an average of 21°C (71°F), compared to April's cooler conditions which range from a minimum of 5°C (42°F) to an average of 13°C (56°F). Additionally, June experiences higher humidity levels at 87%, while April's humidity is slightly lower at 75%. Precipitation also increases in June, with 188 mm (7.4 in) expected over 8 days, compared to 108 mm (4.3 in) over 7 days in April. For more details about the weather in June specifically, check out Yeosu weather in June.

April and July present vastly different weather conditions. In April, temperatures range from a cool minimum of 5°C (42°F) to a pleasant maximum of 19°C (66°F), with an average of 13°C (56°F). The month sees around 108 mm (4.3 in) of precipitation over approximately 7 days, coupled with relatively high humidity at 75%. In stark contrast, July heats up significantly, with minimum temperatures around 20°C (69°F) and maximums reaching 31°C (89°F), averaging 25°C (77°F). However, this comfort comes at a price, as July is wetter with precipitation totaling 275 mm (10.8 in) across 13 days and humidity soaring to 95%. For more detailed information, you can check out Yeosu weather in July.

April and August present stark contrasts in weather, showcasing the transition from spring to summer. In April, temperatures range from a chilly minimum of 5°C (42°F) to a comfortable maximum of 19°C (66°F), averaging around 13°C (56°F). However, this month brings considerable precipitation, with 108 mm (4.3 in) falling over about 7 days, accompanied by a humidity level of 75%. In contrast, August experiences significantly warmer temperatures, with minimums of 22°C (72°F) and maximums reaching 32°C (90°F), averaging a warm 27°C (81°F). This month is also wetter, with 173 mm (6.8 in) of rain spread over approximately 13 days and humidity peaking at 93%. For more insights on the weather, you can visit Yeosu weather in August.

In comparing the weather between April and September, it's clear that September is significantly warmer. April sees average temperatures ranging from a cool 5°C (42°F) to a pleasant 19°C (66°F), while September boasts a much warmer average with minimums around 17°C (63°F) and maximums reaching 28°C (83°F). Additionally, September experiences a higher level of precipitation, totaling 259 mm (10.2 in) over 12 days, compared to April's 108 mm (4.3 in) over just 7 days. The humidity levels also rise from April's 75% to September's 80%, making September feel more tropical. For a closer look at September's climate specifics, check out Yeosu weather in September.

April and October both showcase a transition in weather, but they offer distinct experiences. In April, temperatures range from a cool 5°C (42°F) to a mild 19°C (66°F), with an average of 13°C (56°F). The month receives 108 mm (4.3 in) of rainfall over approximately 7 days, and humidity hovers around 75%. In contrast, October brings warmer conditions, with temperatures varying from 8°C (46°F) to a warm 26°C (79°F) and an average of 18°C (65°F). While October has slightly more precipitation at 113 mm (4.5 in) over just 5 days, the humidity is marginally higher at 77%. For more detailed insights, you can explore Yeosu weather in October.

In comparing the weather between April and November, both months exhibit a similar average temperature of around 13°C (55°F), but the temperature range in November tends to be slightly cooler, with a minimum of 3°C (37°F) compared to April's 5°C (42°F). Interestingly, November experiences a maximum temperature that can reach up to 20°C (68°F), only marginally higher than April's maximum of 19°C (66°F). However, a significant contrast lies in the precipitation levels; April is much wetter, with 108 mm (4.3 in) of rain falling over 7 days, while November has a mere 26 mm (1.0 in) over just 3 days. Both months maintain the same humidity level of 75%. For more detailed insights, you can refer to Yeosu weather in November.

April and December showcase distinct weather patterns, highlighting the transition from spring to winter. In April, temperatures range from a minimum of 5°C (42°F) to a comfortable average of 13°C (56°F), peaking at 19°C (66°F). Despite being milder, April experiences significant rainfall, totaling 108 mm (4.3 in) over about 7 days and higher humidity at 75%. In contrast, December brings a cooler climate with temperatures dipping as low as -6°C (22°F) and averaging around 6°C (43°F), reaching a maximum of 15°C (60°F). Precipitation is considerably less, with only 23 mm (0.9 in) falling over 3 days, accompanied by slightly lower humidity at 73%. For more details on December weather, you can visit Yeosu weather in December.

Compare Yeosu's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Yeosu

As April unfolds in Yeosu, the weather begins to shift towards a more temperate embrace, setting it apart from the chillier winter months. With a maximum temperature reaching a pleasant 19°C, this month invites both locals and visitors to enjoy the blooming scenery and outdoor activities. However, the relatively high humidity and an average of 108 mm of rain over about seven days remind us that spring can also bring its share of showers. Overall, April serves as a refreshing transition into the warmer seasons, making it an ideal time to explore everything Yeosu has to offer. For a more detailed overview of what to expect throughout the year, visit Yeosu Climate.