Last updated: October 30, 2025
In May, Busan, South Korea experiences a delightful transition into warmer weather, with maximum temperatures reaching 22°C (71°F) and an average around 17°C (63°F). This month typically brings a refreshing minimum of 10°C (50°F), making it a comfortable time to explore the city. Although precipitation is notable at 113 mm (4.5 in) over 7 days, the lush green surroundings during this time are worth it. With an average humidity of 83%, visitors can expect a mild coastal climate, perfect for enjoying Busan's scenic beaches and vibrant culture.
May in Busan, South Korea, ushers in a delightful transition as temperatures rise, welcoming the warmth of spring. With minimums around 10°C (50°F) and averages climbing to 17°C (63°F), residents and visitors alike can enjoy the blossoming scenery. The maximum temperatures reach a pleasant 22°C (71°F), inviting ample opportunities for outdoor activities and exploration. Compared to the preceding months, May marks a significant increase, signaling the end of the lingering chill of winter and the onset of more temperate days, making it a perfect time to experience the vibrant culture and picturesque landscapes of this coastal city.
May in Busan, South Korea, showcases a notable precipitation pattern, with 113 mm (4.5 in) of rain recorded over seven days. This level of rainfall, just slightly less than April’s 114 mm, reflects a steady spring transition as the city moves toward the more intense summer months. The consistency in May's precipitation hints at a lingering wet season, bridging the wetter spells of spring and the heightened summer deluge, which peaks in July with 249 mm. As the region prepares for increased humidity and hotter temperatures, the rain in May ensures that the vibrant flora thrives, contributing to Busan’s lush landscapes. Overall, this month serves as a pivotal point in the precipitation cycle, emphasizing the rhythmic ebb and flow of Busan's climate.
As spring gives way to summer, May brings significant shifts in humidity levels in Busan, South Korea, reaching an average of 83%. This represents a noticeable jump from April's 75%, signaling the onset of the more humid months ahead. The rising trend in humidity continues into June, when it peaks at 87%, and stays elevated through the summer. May's moisture in the air not only enhances the lushness of the landscape but also sets the stage for the muggier conditions that typify the coming months. This gradual increase in humidity marks May as a transitional month, where the warmth and wetness begin to unite, creating a vibrant yet sticky atmosphere that characterizes Busan’s summer season.
As May arrives in Busan, South Korea, residents and visitors alike should be prepared for very high UV Index levels, matching April at a score of 10. This means the time it takes for skin to burn shortens to just 15 minutes, urging sun seekers to take precautions while enjoying the warmer days. Interestingly, the UV Index has ramped up from a moderate level of 4 in January, progressively climbing to high in March before hitting its peak in late spring. As summer approaches, June will bring even more intense rays, with values reaching 11, categorizing it as extreme. For those interested in tracking UV levels throughout the year, detailed information can be found at Busan UV Index.
UV Risk Categories
May in Busan, South Korea, shines brightly with 295 hours of sunny delight, marking it as the sunniest month of the year. This increase in sunshine is a continuation of a steady upward trend that begins in January, where residents see just 196 hours. As spring unfolds, the hours of sunlight gradually rise, creating a vibrant atmosphere perfect for outdoor activities. The sunshine peaks in May before slightly tapering off in June, which still boasts a generous 293 hours. Overall, the consistent climb in hours of sunshine not only enriches the scenic beauty of Busan but also enhances the joy of experiencing the warm, lively spirit of the city during the spring and early summer months.
In Busan, South Korea, the likelihood of sunny weather in May takes a dip, with only a 39% chance of clear skies. This marks a slight decrease from the preceding months of April and March, which hover around 45% and 40% respectively. As we move into the summer months, the chances further decline, with June and July experiencing significantly less sun at 33% and 23%. Conversely, the late autumn months, particularly October and November, demonstrate a more favorable trend, boasting 57% and 68% chances of sunshine. Thus, while May may not be the sunniest month, clearer days do return later in the year, inviting a warm embrace from the sun.
In Busan, South Korea, the transition from winter to summer is beautifully reflected in the increasing daylight hours throughout the year. Starting with a modest 10 hours of daylight in both January and February, the days gradually elongate, culminating in a peak of 14 hours from May through July. This bright ascendance reaches its zenith in May, where locals can enjoy 14 hours of sun, perfect for outdoor activities and exploring the coastal beauty of the region. As summer wanes into autumn, daylight gently retreats, tapering to 12 hours in September and back to 10 hours by November. With each passing month, Busanans witness a rhythmic pattern of light that enhances their seasonal experiences, making every moment under the sun a little more precious.
In Busan, South Korea, the month of May brings a gentle breeze, with an average wind speed of 5.6 m/s (13 mph), marking the beginning of warmer days. Within the yearly cycle, May showcases a notable decline in wind speed compared to the earlier months of January through April, where averages hover around 6.0 to 6.9 m/s. This transition reflects the city's shift from the brisk winds of spring to the softer gusts of early summer. As temperatures rise, the milder winds in May contribute to a more comfortable climate, making it a delightful time to explore the coastal beauty of Busan. In the months that follow, such as June, winds further ease down to 4.3 m/s (10 mph), signaling the arrival of the hot summer season ahead.
Weather in Busan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Busan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of May and January, we see striking contrasts. May enjoys a mild climate with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), while January can be quite chilly, featuring temperatures that drop as low as -7°C (20°F) and rise only to a mild 18°C (64°F). Additionally, May experiences more precipitation, with 113 mm (4.5 in) falling over about 7 days, compared to January's 38 mm (1.5 in) over just 4 days. The humidity is also notably higher in May, at 83%, compared to January's 72%. For more insights into January weather, you can check Busan weather in January.
In comparing the weather between May and February, May boasts significantly warmer temperatures, with a minimum of 10°C (50°F) and an average of 17°C (63°F), peaking at 22°C (71°F). In contrast, February experiences much cooler temperatures, ranging from a minimum of -5°C (24°F) to a maximum of 16°C (61°F), with an average temperature of 7°C (44°F). Additionally, May sees more precipitation at 113 mm (4.5 in) over 7 days, compared to February's 46 mm (1.8 in) across just 4 days, which might make May feel a bit more humid at 83% versus February's 67%. For more detailed information, you can visit Busan weather in February.
When comparing the weather in March and May, it's clear that May enjoys significantly warmer temperatures, with average highs reaching 22°C (71°F) compared to March's maximum of 16°C (62°F). Additionally, May has a higher minimum temperature of 10°C (50°F), making it feel much milder overall. However, May also sees more precipitation, totaling 113 mm (4.5 in) over about 7 days, while March experiences slightly less rainfall at 100 mm (3.9 in) across 8 days. The humidity also rises in May, averaging 83%, which is notably higher than March's 65%. For a closer look at the specifics of March weather, visit Busan weather in March.
In comparing the weather of May and April, we see that May tends to be warmer overall, with average temperatures reaching 17°C (63°F) compared to April’s 14°C (57°F). The minimum temperature in May is also higher at 10°C (50°F), while April starts at a cooler 6°C (42°F). However, both months experience similar levels of precipitation, with May receiving 113 mm (4.5 in) and April slightly higher at 114 mm (4.5 in), both spread over 7 rainy days. Interestingly, May is also more humid, with an average humidity of 83%, compared to April's 75%. For more information on April’s weather, you can visit Busan weather in April.
May and June exhibit notable differences in weather conditions. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), with an average of 17°C (63°F). The month sees 113 mm (4.5 in) of precipitation over 7 days and maintains a humidity level of 83%. In contrast, June warms up, with temperatures starting at a minimum of 16°C (62°F) and reaching up to 25°C (78°F), averaging 20°C (69°F). Precipitation increases to 167 mm (6.6 in) over 8 days, accompanied by slightly higher humidity at 87%. For a detailed look at what to expect weather-wise, you can check out Busan weather in June.
May and July offer distinctly different weather experiences. In May, temperatures range from a cool 10°C (50°F) at night to a pleasant 22°C (71°F) during the day, with an average of 17°C (63°F). The month is marked by relatively high humidity at 83% and moderate precipitation, with around 113 mm (4.5 in) of rain over approximately 7 days. In contrast, July brings much warmer conditions, with minimum temperatures starting at 19°C (66°F) and maximums reaching up to 30°C (87°F), averaging 24°C (76°F). However, July sees a significant increase in rainfall, totaling 249 mm (9.8 in) over about 13 days, alongside even higher humidity at 95%. For more insights into July’s weather patterns, check out Busan weather in July.
In May, the weather is generally mild, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F) and an average of 17°C (63°F). However, it is also characterized by relatively high humidity at 83% and considerable rainfall, receiving 113 mm (4.5 in) over about 7 days.
In contrast, August presents a much warmer climate, with temperatures starting at a minimum of 23°C (73°F) and peaking at 31°C (88°F), averaging around 27°C (81°F). August is also wetter, experiencing 158 mm (6.2 in) of precipitation over 13 days, and even higher humidity at 93%. For more details about August weather, check out Busan weather in August.
May and September present contrasting weather patterns. In May, temperatures range from a cool 10°C (50°F) to a pleasant average of 17°C (63°F), peaking at 22°C (71°F). The month experiences about 113 mm (4.5 in) of precipitation over roughly seven days, paired with high humidity at 83%. Conversely, September boasts warmer temperatures, with minimums at 17°C (63°F), averages around 23°C (75°F), and maximums reaching up to 29°C (84°F). Additionally, this month sees significantly more rainfall, totaling 245 mm (9.6 in) spread over eleven days, while humidity remains slightly lower at 80%. For a deeper understanding of September's climate, you can explore Busan weather in September.
May and October present distinct weather patterns, each offering a unique experience. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), with an average of 17°C (63°F). This month sees considerable rainfall, totaling 113 mm (4.5 in) over approximately 7 days, coupled with high humidity at 83%. In contrast, October features slightly cooler nights, with a minimum of 9°C (49°F) and warmer daytime highs, averaging 19°C (67°F) and reaching up to 26°C (78°F). Precipitation is less frequent in October, accumulating to 91 mm (3.6 in) over about 5 days, with humidity dropping to a more comfortable 77%. For a detailed comparison of October weather, you can check Busan weather in October.
May and November present distinct weather patterns, with May enjoying milder and more humid conditions. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), accompanied by an average temperature of 17°C (63°F) and significant precipitation of 113 mm (4.5 in) over about 7 days, resulting in a humidity level of 83%. In contrast, November sees cooler temperatures with a minimum of 3°C (38°F) and a maximum of 21°C (70°F), an average of 14°C (57°F), and much less precipitation at 24 mm (1.0 in) across approximately 3 days, leading to lower humidity at 75%. For more detailed information, visit Busan weather in November.
In May, temperatures in Busan range from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), with an average temperature of 17°C (63°F). The month experiences relatively high humidity at 83% and considerable precipitation, measuring around 113 mm (4.5 in) over approximately 7 days. In contrast, December brings much cooler conditions, with temperatures dipping to a minimum of -4°C (25°F) and reaching a maximum of 18°C (64°F), resulting in an average temperature of just 7°C (46°F). December is drier, with only 25 mm (1.0 in) of precipitation over about 3 days and humidity at a lower 73%. For more detailed insights, you can check Busan weather in December.
As spring transitions into summer, May in Busan reveals a delightful blend of mild temperatures and ample rainfall, setting it apart from the preceding months. With average temperatures hovering around a comfortable 17°C (63°F), this month offers a refreshing escape from the cooler spring chill, yet not quite reaching the summer heat. Visitors can expect a healthy 113 mm (4.5 in) of precipitation, a significant rise that enhances the city's lush greens and vibrant blooms, despite experiencing about 7 days of rain. The humidity level at 83% wraps the city in a warm embrace, giving it that distinctive coastal ambiance. For a deeper dive into Busan's climate patterns and how they evolve throughout the year, check out Busan Climate.