Last updated: October 30, 2025
May in Seongsu, South Korea is characterized by a pleasant blend of warmth and humidity, making it a delightful time to explore the area. With maximum temperatures reaching 30°C (86°F) and an average of 18°C (64°F), the weather invites outdoor activities, though visitors should be prepared for a few cooler moments with minimum lows around 3°C (38°F). Rainfall is common, with 90 mm (3.5 in) expected over 9 days, contributing to the region's lush greenery. The high humidity level, at 85%, adds a tropical feel, perfect for enjoying the vibrant atmosphere of Seongsu amidst the blossoming surroundings.
May in Seongsu, South Korea, marks a delightful transition into warmer weather as the chill of winter fades. With minimum temperatures averaging a mild 3°C (38°F) and daytime highs reaching a comfortable 30°C (86°F), it's no wonder that the city comes alive during this month. The average temperature of 18°C (64°F) invites locals and visitors alike to enjoy outdoor activities, as blooming landscapes create a vibrant backdrop. As the month progresses, the steady climb in temperatures sets the stage for the approaching summer, leaving behind the cooler nights of early spring. This pattern of increasing warmth not only heralds the arrival of long, sunny days but also reflects Seongsu's knack for embracing the season's spirit of renewal and growth.
In May, Seongsu, South Korea, experiences a notable peak in precipitation, receiving 90 mm (3.5 in) of rain over 9 days. This marks a significant increase from the previous months, reflecting the transition into the wetter season that follows. The rainiest month of May not only surpasses April's 63 mm (2.5 in) but also sets the stage for an even wetter June ahead. As spring blooms, these showers help nourish the lush landscapes, while also foreshadowing the more intense rainfall characteristic of summer. The upward trend in precipitation, from just 29 mm (1.1 in) in January to May’s robust totals, indicates a shift from the chilly, dry winter to a dynamic and vibrant rainy season.
May marks a significant rise in humidity in Seongsu, South Korea, with levels soaring to 85%. This upward trend is not unexpected as the region transitions from spring to summer. Following April's elevated 78%, the increase reflects the burgeoning warmth and the arriving rainy season. As temperatures climb, humidity will continue its upward trajectory, peaking in the summer with July and August hitting 95% and 93%, respectively. This pattern highlights the region's distinctive seasonal shifts, where the comfortable crispness of spring quickly gives way to the lush, humid atmosphere of summer.
In May, Seongsu experiences a UV Index that reaches a peak of 10, categorizing the exposure as very high—the same level observed in April. With a burn time of just 15 minutes, it’s crucial for residents and visitors alike to take precautions during this time. The trend shows a significant uptick in UV levels as spring transitions into summer, moving from a moderate index of 4 in January to an extreme level of 12 by July. As the months progress, it’s essential to stay vigilant and protect your skin from the increasingly intense sun. For more details on daily UV readings, visit Seongsu UV Index.
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In Seongsu, South Korea, the month of May shines as a true highlight in the annual sunlit calendar, basking in a delightful 304 hours of sunshine. This peak in sunlight follows a steady upward trend that begins in the early months of the year, with January starting at 192 hours and gradually increasing through February and March. As spring unfolds, the sunny days grow even more abundant, culminating in the vibrant skies of May. While June retains a near-similar glow with 302 hours, the sun's embrace begins to soften in the heat of summer, tapering off into 272 hours by July. This dynamic fluctuation between long sunny days and shorter hours paints a picturesque picture of Seongsu's seasonal rhythm, inviting both locals and visitors to revel in its delightful May afternoons.
In Seongsu, South Korea, May brings a 37% chance of sunny weather, reflecting a mild decline from the spring months of April and March. This trend indicates that as spring transitions into summer, the likelihood of clear skies diminishes slightly. Notably, while May struggles to maintain the higher sunshine odds seen in earlier months, it still outperforms the peak summer months of July and August, which drop to 21% and 28% chance of sun, respectively. As the year progresses, October and November spark a resurgence in sunshine probability, suggesting that late spring can be a bit unpredictable, yet it remains a charming time for outdoor activities before the summer heat sets in.
In Seongsu, South Korea, the daylight duration undergoes a noticeable transformation throughout the year. Beginning with a consistent 10 hours in both January and February, the days gradually lengthen as spring arrives. By March, daylight increases to 11 hours, and with the onset of April, it expands further to 13 hours, heralding the beauty of blossoming flowers. May marks a peak in daylight, offering 14 hours that linger through June and July. As summer fades into autumn, the daylight begins to wane, dropping to 13 hours in August and then to 12 hours in September. This gradual descent continues through the fall months, ultimately settling to 10 hours in November and just 9 hours by December. This rhythmic change in daylight not only influences daily life but also enhances the seasonal charm of Seongsu, inviting residents and visitors alike to embrace the shifting atmosphere.
In May, Seongsu experiences a gentle breeze with an average wind speed of 2.8 m/s (6 mph), matching the conditions of January and April. This month marks a transition into the warmer season, where the winds remain relatively stable compared to the slightly brisker early months of the year. As the summer approaches in June, wind speeds dip to a calmer 2.0 m/s (4 mph), signaling a shift towards more tranquil conditions that persist through the hotter summer months of July and August. This consistent yet mild wind patterns in May create a refreshing environment for outdoor activities, setting the stage for the relaxed vibes of the approaching summer days.
Weather in Seongsu varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Seongsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
May experiences a much milder climate compared to the frigid temperatures of January. In May, temperatures range from a minimum of 3°C (38°F) to a maximum of 30°C (86°F), with an average of 18°C (64°F) and relatively high humidity at 85%. The month also sees around 90 mm (3.5 in) of precipitation spread over approximately 9 days. In contrast, January is characterized by significantly colder weather, with temperatures plummeting to a minimum of -19°C (-2°F) and only reaching a maximum of 16°C (60°F), yielding an average temperature of -1°C (31°F). Additionally, January has lower humidity at 71% and only about 29 mm (1.1 in) of precipitation across just 5 days. For more detailed information on January weather, see Seongsu weather in January.
In May, the weather is significantly warmer and more humid, with temperatures ranging from a chilly 3°C (38°F) to a pleasant high of 30°C (86°F) and an average of 18°C (64°F). This month typically sees around 90 mm (3.5 in) of precipitation spread over 9 days, contributing to an overall humidity of 85%. In contrast, February presents a much colder climate, with temperatures that can drop as low as -14°C (7°F) and a maximum of 22°C (71°F), averaging just around 1°C (34°F). February experiences less precipitation at 39 mm (1.5 in) over 5 days, and a lower humidity level of 68%. For more details, you can check Seongsu weather in February.
In comparing the weather of March and May, May presents a much warmer climate, with average temperatures rising to 18°C (64°F), compared to March’s cooler average of 7°C (45°F). While both months experience a similar number of rainy days, May sees a higher total precipitation of 90 mm (3.5 in), compared to March's 68 mm (2.7 in). Additionally, May's humidity of 85% creates a more muggy atmosphere than March’s 67%, contributing to a distinct shift in seasonal feel as spring progresses. For more detailed information, you can check out Seongsu weather in March.
In comparing the weather between April and May, we can see a notable shift in temperatures and humidity levels. April experiences cooler conditions, with a minimum temperature of -2°C (29°F) and an average of 12°C (55°F), while May brings milder weather, with an average temperature soaring to 18°C (64°F) and a maximum of 30°C (86°F). Additionally, May tends to be wetter, with 90 mm (3.5 in) of precipitation over 9 days, compared to April's 63 mm (2.5 in) over just 7 days. The humidity also rises in May to 85%, making it feel warmer and more humid than the previous month. For a more detailed look at April's weather, you can check Seongsu weather in April.
May and June showcase a notable transition in weather patterns. In May, temperatures range from a cool 3°C (38°F) at night to a warm average of 18°C (64°F) during the day, with a maximum reaching up to 30°C (86°F). The month experiences a total precipitation of 90 mm (3.5 in) over about 9 days, accompanied by high humidity levels at 85%.
In contrast, June brings a significant increase in warmth, with temperatures starting at a milder minimum of 10°C (51°F), averaging 22°C (71°F), and peaking at 33°C (91°F). The month is wetter, with precipitation rising to 131 mm (5.2 in) over 10 days and humidity slightly increasing to 87%. For a detailed look at the weather specifics for June, check out Seongsu weather in June.
May and July exhibit distinct differences in weather patterns. In May, temperatures range from a minimum of 3°C (38°F) to a maximum of 30°C (86°F), with an average of 18°C (64°F). The month sees moderate precipitation of 90 mm (3.5 in) over about 9 days, accompanied by a humidity level of 85%. In contrast, July experiences significantly warmer conditions, with temperatures ranging from a minimum of 17°C (62°F) to a maximum of 35°C (95°F), averaging 25°C (77°F). Precipitation in July is much higher at 261 mm (10.3 in) over 17 days, and humidity also increased to 95%. For more details, you can check Seongsu weather in July.
May and August exhibit notable differences in weather patterns. In May, temperatures range from a cool minimum of 3°C (38°F) to a pleasant average of 18°C (64°F), peaking at a warm 30°C (86°F). The month experiences around 90 mm (3.5 in) of precipitation over approximately 9 days, with a humidity level of 85%. In contrast, August is much warmer with minimum temperatures rising to 14°C (58°F), an average of 26°C (79°F), and maximums soaring to 37°C (99°F). This month is also significantly wetter, with precipitation reaching 214 mm (8.4 in) across 17 days, and higher humidity at 93%. For more detailed insights on August weather in Seongsu, check out Seongsu weather in August.
In May, temperatures start to warm up, ranging from a chilly 3°C (38°F) to a hot 30°C (86°F), with an average of 18°C (64°F). This month experiences about 90 mm (3.5 in) of precipitation over 9 days and humidity levels are quite high at 85%. In contrast, September offers slightly higher average temperatures, from a minimum of 8°C (48°F) to a maximum of 31°C (88°F), averaging 21°C (70°F). However, this month sees a significant increase in precipitation, totaling 201 mm (7.9 in) over 11 days, with humidity slightly lower at 80%. For more details on September weather specifically, visit Seongsu weather in September.
May and October exhibit distinct weather patterns, reflecting the transition between spring and autumn. In May, temperatures range from a cool 3°C (38°F) at night to a warm 30°C (86°F) during the day, with an average of 18°C (64°F) and higher humidity at 85%. The month sees about 90 mm (3.5 in) of precipitation over approximately 9 days, which contributes to a lush spring landscape.
In contrast, October experiences cooler temperatures, with a minimum dipping to 0°C (32°F) and an average of 14°C (58°F), while still reaching up to 30°C (86°F) on warmer days. This month is drier, receiving only 67 mm (2.6 in) of rain over about 5 days, and the humidity decreases to 78%. For more detailed insights, you can check Seongsu weather in October.
May and November present contrasting weather experiences. In May, temperatures can range from a cool 3°C (38°F) to a warm 30°C (86°F), with an average of 18°C (64°F). This month also sees relatively high humidity at 85% and about 90 mm (3.5 in) of precipitation over 9 days. In contrast, November brings cooler conditions, with temperatures varying from a minimum of -4°C (26°F) to a comfortable maximum of 21°C (70°F), averaging around 8°C (46°F). Precipitation is much lower at 42 mm (1.6 in) across 6 days, and humidity decreases to 76%. For more specific insights into November's climate, check out Seongsu weather in November.
May and December exhibit stark contrasts in weather conditions. In May, temperatures range from a mild 3°C (38°F) at night to a warm 30°C (86°F) during the day, with an average of 18°C (64°F). The month experiences significant rainfall, totaling 90 mm (3.5 in) over about 9 days, along with high humidity at 85%. In contrast, December features much colder temperatures, with a minimum of -13°C (8°F) and a maximum of 17°C (63°F), averaging just 1°C (34°F). Precipitation is considerably less, averaging 31 mm (1.2 in) over 5 days, and humidity dips to 73%. For more details, check Seongsu weather in December.
As May arrives in Seongsu, the weather transforms into a delightful blend of warmth and occasional rainfall, marking a distinct transition from the cooler months. With average temperatures rising, residents and visitors can expect much more comfortable days filled with sunshine, although the humidity often hovers around a high 85%. While precipitation is present, it typically manifests as brief showers over about nine days, making this month perfect for outdoor activities amidst the fresh, vibrant spring atmosphere. For anyone looking to experience the charm of Seongsu in May, it’s a lively time that sets the stage for the warmer summer months ahead. For more detailed insights, check out Seongsu Climate.