Last updated: August 21, 2025
In May, Nagasaki, Japan experiences a mild climate characterized by maximum temperatures reaching up to 25°C (77°F) and an average of 19°C (67°F). The month sees a noticeable contrast in temperatures, with minima dropping to around 12°C (54°F), creating comfortable conditions for outdoor activities. Despite the pleasant temperatures, precipitation is significant, with 229 mm (9.0 in) of rain spread over 11 days. The high humidity at 87% contributes to the lushness of the surrounding landscapes, making May an enchanting time to explore this historic city. Visitors can expect a blend of gentle breezes and occasional showers, which add to the vibrant atmosphere of Nagasaki in spring.
In May, Nagasaki experiences a delightful transition into warmer weather, with temperatures ranging from a minimum of 12°C (54°F) to a comfortable maximum of 25°C (77°F). This month showcases an average temperature of 19°C (67°F), marking a significant rise compared to the cooler months preceding it. As spring blooms, locals and visitors alike can enjoy the pleasant conditions, ideal for outdoor activities and exploration. The gradual increase in temperatures signals the approach of summer, setting the stage for the vibrant, lush landscapes that this historic city is known for. With a clear trend toward warmth, May is a wonderful time to experience the unique charm of Nagasaki.
May marks a significant peak in precipitation for Nagasaki, Japan, as the city experiences an average of 229 mm (9.0 in) of rainfall over 11 days. This substantial increase from April's 143 mm (5.6 in) suggests that spring is giving way to the more intense rains of early summer. As one of the wettest months, May sets the stage for the upcoming deluge in June, which sees precipitation rise further to 272 mm (10.7 in). The trend indicates a clear transition, with each month ramping up toward the heavy rainfall characteristic of July. As the landscape transforms under these downpours, the patterns of moisture not only sustain the vibrant flora but also contribute to Nagasaki's lush, green scenery.
In Nagasaki, Japan, May ushers in a noticeable surge in humidity, reaching 87%, which marks a significant leap from the milder conditions of the preceding months. This increase is indicative of the transition into the summer season, where humidity levels typically continue to rise, peaking in July at a staggering 97%. The trend is clear: as spring gives way to summer, residents and visitors alike can expect a marked increase in moisture in the air, culminating in the most humid months of the year. This high humidity in May sets the stage for a lush, vibrant landscape, embodying the beauty of Nagasaki during this season.
As May rolls in, Nagasaki experiences an unwavering UV Index of 11, categorizing it within the extreme exposure range. This signals a significant step up from earlier months, as the UV levels have been consistently rising since January. With just 10 minutes of unprotected sun exposure leading to potential skin burns, it’s crucial to take protective measures seriously. This trend of sustained high UV levels continues into June, suggesting that the summer months in Nagasaki demand vigilance against sun exposure. For more information on UV levels throughout the year, check out the details here: Nagasaki UV Index.
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In Nagasaki, Japan, the month of May radiates with a delightful 279 hours of sunshine, marking a continuation of the region's gradual transition into warmer weather. Following an impressive April, which boasted 282 hours, May holds its own as daylight begins to wane slightly but still offers abundant bright days. This trend of increasing sunlight persists through the spring months, with March and April also shining brightly with 261 and 282 hours respectively. The sun-soaked atmosphere is a prelude to the peak summer months ahead, where sunshine reaches its zenith in August with an impressive 302 hours. Overall, May provides the perfect balance of warmth and brightness, enticing residents and visitors alike to enjoy the beauty of Nagasaki’s landscape.
As May rolls into Nagasaki, the likelihood of sunny weather dips to 30%, marking a noticeable decline from the preceding months. This trend is indicative of a spring transition into early summer, where clouds tend to dominate the sky more frequently. While April offers a slightly higher chance of sunshine at 42%, May signals the start of a shift towards the wetter months, with June and July experiencing even lower probabilities of clear skies at 25% and 20%, respectively. Despite this, the sunny streak does make a comeback in the fall, with October boasting a substantial 65% chance of sun, reminding residents and visitors alike that brighter days are ahead.
As spring unfolds in Nagasaki, Japan, the daylight hours steadily increase, offering a beautiful transition from the shorter days of winter. In May, residents bask in 13 hours of sunlight, a delightful boost that comes after a gradual rise from 10 hours in January. This trend continues into June, reaching a peak of 14 hours, inviting locals to enjoy longer evenings filled with vibrant activities. As summer gives way to autumn, daylight begins to recede, but not without leaving behind a legacy of brightness that lingers with 13 hours in August. The rhythm of daylight in Nagasaki not only marks the changing seasons but also highlights the increasing vitality of the city as nature awakens and flourishes.
In May, Nagasaki experiences a noticeable dip in wind speed, averaging 3.8 m/s (9 mph), marking one of the calmest months of the year. This gentle breeze contrasts with the brisker winds typical of the earlier months, such as January and February, where speeds hover around 5.2 m/s and 5.1 m/s, respectively. The transition from spring to early summer brings a milder air, as wind speeds gradually decline from April’s 4.2 m/s. This trend continues into June, where the winds soften further to just 2.7 m/s (6 mph). Overall, May serves as a pivotal point in Nagasaki's wind pattern, highlighting a shift towards more tranquil conditions as the city embraces the warmth of approaching summer days.
Weather in Nagasaki varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Nagasaki, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January showcase a stark contrast in weather conditions. In May, temperatures range from a minimum of 12°C (54°F) to a maximum of 25°C (77°F), with an average of 19°C (67°F). The month experiences considerable rainfall, accumulating 229 mm (9.0 in) over 11 days, while the humidity remains high at 87%. In contrast, January is much cooler, with temperatures spanning from 0°C (32°F) to 18°C (65°F) and an average of 8°C (47°F). Precipitation is significantly lower in January, totaling only 61 mm (2.4 in) over 8 days, accompanied by a humidity level of 73%. For a more detailed view of January's weather, you can check Nagasaki weather in January.
May and February present distinctly different weather patterns. In May, temperatures range from a minimum of 12°C (54°F) to a pleasant average of 19°C (67°F), with maximum highs reaching 25°C (77°F). This month experiences higher humidity at 87% and more substantial rainfall, totaling 229 mm (9.0 in) over 11 days. In contrast, February has cooler temperatures, with a minimum of 0°C (33°F) and an average of just 9°C (48°F), peaking at 17°C (63°F). Precipitation in February is lighter, at 106 mm (4.2 in) over 10 days, and the humidity is lower at 69%. For more detailed insights, you can check Nagasaki weather in February.
In comparing the weather between May and March, it is evident that May experiences significantly warmer temperatures, with an average of 19°C (67°F) and a maximum of 25°C (77°F), compared to March's average of 12°C (54°F) and max of 20°C (68°F). Additionally, May is characterized by higher humidity at 87% and more precipitation, totaling 229 mm (9.0 in) over 11 days, while March has lower precipitation of 157 mm (6.2 in) spread across 12 days and a more moderate humidity of 71%. For more detailed information on March weather specifically, you can visit Nagasaki weather in March.
May generally offers warmer weather compared to April, with average temperatures rising from 15°C (60°F) in April to 19°C (67°F) in May. The maximum temperature in May can reach up to 25°C (77°F), while April peaks at 23°C (73°F). However, May also brings increased precipitation, totaling 229 mm (9.0 in) over 11 days, compared to April’s 143 mm (5.6 in) over 9 days. Humidity levels are higher in May as well, averaging 87%, compared to 79% in April. For more details on April weather specifically, you can visit Nagasaki weather in April.
May and June exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 12°C (54°F) to a maximum of 25°C (77°F), with an average of 19°C (67°F). The month is characterized by high precipitation of 229 mm (9.0 in) over 11 days and humidity levels at 87%. On the other hand, June sees warmer temperatures, with a minimum of 18°C (64°F) and a maximum of 27°C (81°F), averaging 22°C (73°F). However, it also brings increased precipitation, totaling 272 mm (10.7 in) over 14 days, along with slightly higher humidity at 91%. For a more detailed overview of weather conditions, check out Nagasaki weather in June.
May and July exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 12°C (54°F) to a comfortable average of 19°C (67°F), reaching a maximum of 25°C (77°F). The month sees significant rainfall, with 229 mm (9.0 in) over 11 days, and humidity levels hovering at 87%. In contrast, July experiences much warmer temperatures, with a minimum of 21°C (70°F) and an average of 26°C (79°F), peaking at 32°C (89°F). Rainfall increases substantially to 442 mm (17.4 in) across 18 days, accompanied by heightened humidity at 97%. For a closer look at July's weather, visit Nagasaki weather in July.
May and August present contrasting weather profiles. In May, temperatures range from a mild minimum of 12°C (54°F) to a pleasant maximum of 25°C (77°F), with an average of 19°C (67°F). The month experiences significant precipitation, totaling 229 mm (9.0 in) over approximately 11 days, accompanied by high humidity at 87%. In contrast, August brings much warmer temperatures, with a minimum of 21°C (69°F) and a peak reaching 33°C (93°F), averaging around 28°C (82°F). While it is hotter, August also sees increased rain, with 326 mm (12.8 in) falling over 14 days and humidity rising to 94%. For more details about August weather, you can visit Nagasaki weather in August.
May weather features milder temperatures, with averages around 19°C (67°F) and a maximum of 25°C (77°F). The month experiences significant rainfall, totaling 229 mm (9.0 in) over 11 days, along with relatively high humidity at 87%. In contrast, September is warmer, with minimum temperatures starting at 19°C (66°F) and reaching a maximum of 32°C (90°F), averaging at 25°C (77°F). While September has slightly lower precipitation at 225 mm (8.9 in) spread over 14 days, the humidity remains comparable at 84%. For a deeper look into what to expect, check out Nagasaki weather in September.
In May, the weather tends to be cooler with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 25°C (77°F) and an average of 19°C (67°F). It is also quite rainy, receiving a significant 229 mm (9.0 in) of precipitation over approximately 11 days, coupled with a high humidity level of 87%. In contrast, October experiences slightly warmer temperatures, with a minimum of 14°C (57°F), an average of 20°C (69°F), and a maximum of 28°C (83°F). The month is drier, recording only 117 mm (4.6 in) of precipitation over 8 days and lower humidity at 79%. For more details on October weather, you can check out Nagasaki weather in October.
May and November present distinct contrasts in weather. In May, temperatures range from a minimum of 12°C (54°F) to a maximum of 25°C (77°F), with an average of 19°C (67°F). This month also experiences higher precipitation at 229 mm (9.0 in) over approximately 11 days, accompanied by a high humidity level of 87%. In contrast, November sees cooler temperatures, with a minimum of 8°C (46°F), an average of 15°C (60°F), and a maximum of 23°C (74°F). Precipitation decreases significantly to 81 mm (3.2 in) over about 9 days and humidity drops to 75%. For more specific information on November weather, check out Nagasaki weather in November.
May and December present contrasting weather patterns. In May, temperatures range from a minimum of 12°C (54°F) to a maximum of 25°C (77°F), with an average of 19°C (67°F). This month is also characterized by high humidity at 87% and significant rainfall, totaling 229 mm (9.0 in) over about 11 days. In contrast, December features cooler temperatures, with a minimum of 2°C (36°F) and an average of 10°C (51°F), peaking at 22°C (71°F). The precipitation is considerably lower at 92 mm (3.6 in) across roughly 8 days, and humidity drops to 72%. For a more detailed view of December weather, check out Nagasaki weather in December.
As spring unfolds in Nagasaki, May brings a refreshing transition marked by warmer temperatures and increased humidity. With average highs reaching a pleasant 25°C (77°F), this month stands out from the cooler days of earlier spring, inviting residents and visitors alike to embrace the outdoors. While May experiences a notable 229 mm of precipitation over approximately 11 days, the lush greenery that emerges afterward showcases the beauty of this season. The humidity, hovering around 87%, adds a touch of tropical warmth, making it distinctively different from the drier months that follow. For more insights into the local climate year-round, check out Nagasaki Climate.