Last updated: October 30, 2025
April in Jeju City, South Korea, ushers in a mild transition towards spring, featuring a maximum temperature of 20°C (69°F) and an average of 13°C (57°F). Visitors can expect cooler evenings, with minimum temperatures dropping to 6°C (43°F). This month sees a significant rainfall of 91 mm (3.6 in) across approximately 7 rainy days, contributing to a high humidity level of 83%. The combination of pleasant temperatures and occasional showers makes April a refreshing yet variable time to explore the natural beauty of Jeju.
In April, Jeju City, South Korea experiences a refreshing shift in temperatures, marking the transition from the chill of winter to the warmth of spring. With minimum temperatures rising to 6°C (43°F) and averages reaching 13°C (57°F), the island begins to bloom. Daytime highs reach a pleasant 20°C (69°F), inviting both locals and travelers to explore its stunning landscapes. This month not only signifies warmer weather but also showcases the island’s vibrant flora coming to life, making it an ideal time for outdoor activities and enjoying the natural beauty of Jeju. As the month progresses, temperatures continue to trend upward, hinting at the approaching summer warmth of May and beyond.
In April, Jeju City experiences a moderate shift in weather as it transitions into spring, with precipitation amounting to 91 mm (3.6 in) over the month. This drop from March's 101 mm (4.0 in) signals a more stable climate, as rain falls on just 7 days—a decrease that hints at the coming drier conditions of late spring. Notably, April sets the stage for the gradual increase in rainfall patterns that emerge in the following months, with May showing a similar total of 92 mm (3.6 in). As the island prepares for the summer deluge—capped by August's peak of 197 mm (7.7 in)—April offers a refreshing blend of mild rain and vibrant blooms, marking a crucial point in Jeju's annual weather cycle.
April brings a noticeable shift in humidity levels in Jeju City, South Korea, with averages soaring to 83%. This increase marks a significant rise from previous months, primarily influenced by the onset of spring and the approaching summer. As the humidity steadily climbs, creeping up from 72% in January to an impressive 89% by May, the island begins to feel the effects of warmer weather. The trend continues well into the summer months, peaking at a staggering 98% in July, highlighting Jeju's reputation for its lush, verdant landscapes that thrive in this humid climate. April serves as a pivotal transition, setting the stage for the tropical embrace that characterizes the months ahead.
April marks a significant shift in Jeju City's UV exposure, as the UV Index soars to 9, categorizing it as very high. With a burn time of just 15 minutes, this increase from the previous months highlights the necessity for sun protection. As spring unfolds, residents and visitors alike should prepare for heightened sun intensity that continues into May, which sees a peak UV Index of 10. This trend signals the transition towards summer, where UV levels reach extreme highs in June and July. To stay informed about UV levels and protect yourself while enjoying the beautiful landscapes of Jeju, check out Jeju City UV Index.
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April in Jeju City brings a delightful burst of sunshine, with an impressive 292 hours of sunlight bathing the island in warmth. This month marks a significant upturn from the preceding months, showcasing a steady increase in daylight that starts as early as January with just 166 hours. The trend continues upward through March, where the hours reach 267, culminating in April's vibrant glow. Following this peak, the city enjoys slightly less sunlight in June and July, but remains bathed in abundant rays through the summer. As the seasons transition, the hours gradually dip again, yet April stands out as a highlight, inviting locals and visitors alike to revel in the beauty and brightness of this enchanting coastal destination.
As spring unfolds in Jeju City, South Korea, April emerges as a beacon of sunny skies, boasting a 41% chance of sunshine. This marks an uplifting increase compared to the earlier months, with January at 31% and March at 35%. The trend highlights a gradual transition towards sunnier days, peaking in the beautiful fall months of October and November, which enjoy significantly higher probabilities of sunny weather at 56% and 51%, respectively. As April approaches, residents and visitors alike can look forward to milder weather and a growing likelihood of sunshine, making it an ideal time for outdoor adventures and enjoying the island's natural beauty.
April in Jeju City, South Korea, marks a delightful transition into longer days, with daylight extending to 13 hours. This increase from 11 hours in March signifies the onset of spring, inviting locals and visitors alike to embrace the vibrant atmosphere. As daylight hours peak at 14 hours in the summer months of June and July, the island basks in the golden glow, making it a perfect time for outdoor adventures. Following April, daylight gradually decreases again, transitioning back to shorter days from August through December. This natural ebb and flow of daylight beautifully illustrates the rhythm of the seasons in Jeju, enhancing the island's captivating charm throughout the year.
In April, Jeju City, South Korea, experiences a gentle breeze, with an average wind speed of 5.0 m/s (11 mph). This marks a shift from the stronger gusts of earlier months, as both January and February hold steady at 6.5 m/s (14 mph). The wind gradually softens in spring, coinciding with the blooming of flowers, creating a perfect backdrop for outdoor activities. Following April, the wind continues to taper, reaching its softest point in June with only 3.3 m/s (7 mph). This trend of diminishing winds not only enhances the serene atmosphere but also invites visitors to relish the island's natural beauty. As the seasons transition, the wind picks up again in the fall, reminding us of Jeju's dynamic climate, where brisk breezes are never too far away.
Weather in Jeju City varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Jeju City, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in April and January, April generally offers much milder temperatures, with daily highs averaging around 13°C (57°F) compared to January's cooler 6°C (44°F). While January can see minimum temperatures drop to as low as -2°C (29°F), April maintains a minimum of 6°C (43°F), giving it a more comfortable feel overall. Precipitation is also more prominent in April, with 91 mm (3.6 in) falling over 7 days, compared to January's 58 mm (2.3 in) over 10 days. Additionally, April's higher humidity level of 83% contrasts with January's 72%, creating a distinctly different atmosphere between the two months. For more detailed information on January weather, check Jeju City weather in January.
April generally offers a more pleasant climate compared to February, with average temperatures rising from 7°C (44°F) in February to 13°C (57°F) in April. The minimum temperatures in April are significantly milder at 6°C (43°F), compared to the sub-zero lows of -1°C (31°F) experienced in February. While both months experience some rainfall, April sees higher precipitation levels at 91 mm (3.6 in) over 7 days, compared to February's 59 mm (2.3 in) over 9 days. Additionally, April's higher humidity at 83% contributes to a more humid feel than February's 70%. For more detailed information on February weather, you can visit Jeju City weather in February.
April generally experiences milder weather compared to March, with average temperatures rising from 10°C (51°F) in March to 13°C (57°F) in April. The minimum temperature in April is slightly warmer at 6°C (43°F) versus 3°C (37°F) in March, while the maximum temperature reaches 20°C (69°F) in April, compared to 18°C (65°F) in March. However, April also sees more precipitation, with 91 mm (3.6 in) falling over 7 days, whereas March recorded 101 mm (4.0 in) over 11 days. Additionally, April's humidity is higher at 83%, compared to 73% in March, indicating a wetter atmosphere as spring progresses. For those interested in exploring more about the weather specifics of March, refer to Jeju City weather in March.
April and May in Jeju City present a notable transition in weather. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 20°C (69°F), with an average temperature of 13°C (57°F). The month experiences 91 mm (3.6 in) of precipitation over 7 days, accompanied by a humidity level of 83%. In contrast, May sees a rise in temperatures, with a minimum of 10°C (51°F), an average of 17°C (63°F), and a maximum of 24°C (75°F). Although precipitation slightly increases to 92 mm (3.6 in) over 9 days, humidity also rises to 89%. For more specific details on May weather, you can refer to Jeju City weather in May.
April and June exhibit notable differences in weather patterns. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 20°C (69°F), with an average of 13°C (57°F). The month experiences significant rainfall, totaling 91 mm (3.6 in) over 7 days, and humidity levels hover around 83%. In contrast, June offers warmer temperatures, with a minimum of 16°C (60°F) and a maximum of 26°C (79°F), averaging 21°C (70°F). Rainfall increases to 141 mm (5.6 in) and occurs over 10 days, while humidity rises slightly to 93%. For more details on June weather, you can check Jeju City weather in June.
April and July present stark contrasts in weather conditions. In April, temperatures range from a cool minimum of 6°C (43°F) to a comfortable maximum of 20°C (69°F), averaging around 13°C (57°F). The month sees a moderate amount of rain, totaling 91 mm (3.6 in) across about 7 days, and relative humidity stands at a high 83%. In contrast, July experiences warmer temperatures, with a minimum of 19°C (67°F) and a peak of 31°C (88°F), averaging 25°C (77°F). Additionally, July is wetter, with 170 mm (6.7 in) of precipitation over roughly 14 days and humidity soaring to 98%. For more detailed insights on July temperatures, check out Jeju City weather in July.
April weather is characterized by milder temperatures, with an average of 13°C (57°F) and maximums reaching up to 20°C (69°F). The month experiences about 91 mm (3.6 in) of precipitation over 7 days, with humidity levels around 83%. In contrast, August sees significantly warmer temperatures, with averages around 27°C (81°F) and highs peaking at 31°C (88°F). Precipitation dramatically increases to 197 mm (7.7 in) over approximately 15 days, and humidity rises to a muggy 96%. For more details, you can check out Jeju City weather in August.
When comparing the weather in April and September, a notable difference in temperature is evident. April tends to have cooler temperatures, with a minimum of 6°C (43°F) and an average of 13°C (57°F), while September enjoys much warmer conditions, featuring a minimum of 18°C (65°F) and an average of 23°C (74°F). Additionally, September is characterized by significantly higher precipitation, measuring 298 mm (11.7 in) over 15 days, compared to April's 91 mm (3.6 in) across just 7 days. Humidity levels are relatively similar, with April at 83% and September slightly higher at 84%. For a more detailed look at weather conditions in September, you can visit Jeju City weather in September.
April and October present distinct weather patterns, reflecting the transition from spring to autumn. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 20°C (69°F), with an average of 13°C (57°F). This month sees significant rainfall, accumulating 91 mm (3.6 in) over about 7 days, contributing to a relatively high humidity level of 83%.
In contrast, October features warmer temperatures, with a minimum of 11°C (53°F) and reaching up to 27°C (81°F), averaging around 19°C (66°F). The month experiences slightly more precipitation at 109 mm (4.3 in) over approximately 9 days, yet the humidity is a bit lower at 78%. For more detailed insights on the weather specifics, you can check Jeju City weather in October. Overall, while April is cooler and wetter, October offers a milder and warmer climate as the year draws to a close.
April and November in Jeju City present a pleasant transition between winter and winter. April typically enjoys a mild average temperature of 13°C (57°F), peaking at 20°C (69°F), with higher humidity levels at 83% and a notable amount of rainfall totaling 91 mm (3.6 in) over about seven days. In contrast, November sees a slightly warmer average temperature of 14°C (57°F), with maximum temperatures reaching 22°C (71°F), but benefits from significantly less precipitation, with only 46 mm (1.8 in) over the same number of days. This results in a more comfortable humidity level of 73%. For those interested in a more detailed look at November weather, you can explore Jeju City weather in November.
April and December present contrasting weather conditions. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 20°C (69°F), with an average of 13°C (57°F). The month receives 91 mm (3.6 in) of rainfall over approximately 7 days, accompanied by relatively high humidity levels at 83%. On the other hand, December experiences cooler temperatures, with a minimum of 0°C (33°F) and an average of 9°C (48°F), peaking at 20°C (68°F). Precipitation decreases to 61 mm (2.4 in) over about 10 days, and the humidity levels are more moderate at 71%. For more detailed information, you can visit Jeju City weather in December.
April weather in Jeju City marks a transition into spring, characterized by milder temperatures and increased humidity compared to the chillier winter months. With an average temperature rising to a comfortable 13°C (57°F), it's a delightful time to explore the island's natural beauty, despite the occasional rainfall that brings about 91 mm (3.6 in) of precipitation over several days. This month's climate offers a refreshing change, making it an ideal period for visitors longing to experience Jeju’s vibrant flora and stunning landscapes. For further insights into the climatic patterns of Jeju, be sure to visit Jeju City Climate.