Last updated: August 21, 2025
May in Koshima, Japan, brings a delightful blend of warmth and rainfall, making it a month of vibrant nature. Average temperatures hover around 22°C (71°F), with highs reaching a pleasant 26°C (78°F) and lows settling at around 16°C (61°F). However, the humid atmosphere, with an average humidity of 83%, can make it feel warmer than it is. This month also sees a significant precipitation total of 273 mm (10.7 in), spread over 13 days, contributing to the lush greenery that characterizes the region during this time. As spring unfolds, Koshima becomes an inviting destination for those who appreciate vivid landscapes and mild weather.
In May, Koshima, Japan experiences a delightful transition into warmer weather, with temperatures ranging from a minimum of 16°C (61°F) to a comfortable maximum of 26°C (78°F). The average temperature reaches 22°C (71°F), signaling the approach of summer. This month showcases a remarkable upward trend compared to the cooler preceding months, as temperatures steadily rise from 14°C (57°F) in January to their peak in late spring. As nature flourishes, May invites visitors to enjoy the vibrancy of the season, making it an ideal time for outdoor activities amidst the lush landscapes of Koshima.
In May, Koshima, Japan, experiences a significant uptick in precipitation, with 273 mm (10.7 in) of rain falling over 13 days. This marked increase sets the stage for the city's transition into the wetter summer months. Compared to earlier spring months like April, which recorded 186 mm (7.3 in) over 12 days, May not only showcases a leap in total rainfall but also indicates a rise in the frequency of rainy days. As the landscape burgeons with lush greenery and vibrant blossoms, this month signals the onset of a more intense rainy season, culminating in a dramatic 491 mm (19.3 in) in June. The precipitation trend in May reflects the increasing climatic shifts typical for this region as it prepares for the heavy rains of summer.
As spring transitions into summer, May in Koshima, Japan is marked by a noticeable increase in humidity, rising to 83%. This uptick continues the trend from April, where humidity reached 79%, highlighting a gradual buildup of moisture in the air. With June on the horizon and humidity expected to peak at 86%, May serves as a precursor to the sweltering months ahead. It’s the time when the lush landscapes of Koshima thrive, but the increasing moisture also heralds the onset of the muggy summer season. Residents and visitors alike can expect a warm embrace as nature prepares for the immersive vibrancy of summer.
As May rolls into Koshima, Japan, residents and visitors should be mindful of the extreme UV Index, soaring to 12. This trend signifies a continuation of heightened sun exposure that began in April, with a burning time of just 10 minutes—dangerously brief. The UV intensity remains consistent into June, suggesting that protective measures are essential during these months. Notably, the sharp climb from a moderate index of 5 in January all the way to May's extreme level underscores the importance of vigilance against sun damage as summer approaches. For those looking for more information on UV safety, the details are available at Koshima UV Index.
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As the calendar turns to May, Koshima, Japan, basks in an impressive 280 hours of sunshine, marking a peak in radiant days that began with the arrival of spring. Following a steady increase from 164 hours in January, the sun steadily gains momentum, shining brighter each month. April's 273 hours signal the transition into the warmer season, culminating in May's abundant light, perfect for outdoor activities and enjoying nature's blossoms. This upward trend continues into the summer, with June slightly dipping to 242 hours, but the sun’s powerful grip firmly establishes a pattern where the bright days of August reach 319 hours—the sun shines its brightest before the gradual retreat begins in the fall. This vibrant month not only heralds the warmth of summer but also invites locals and visitors alike to revel in Koshima’s enchanting landscapes under sunny skies.
In Koshima, Japan, May typically brings a notable dip in sunny weather, with a chance of sunshine at just 21%, marking it as one of the cloudier months of the year. As the seasons transition, this is a stark contrast to the brighter days of September and October, which boast chances of sun at 46% and 53%, respectively. While April's 36% offers some hope for clear skies, May's decline in sunshine sets the stage for the onset of the rainy season in June, where the likelihood further decreases to 17%. Observing these trends highlights the shift from spring's moderate sunshine to the greyer shades of early summer, reinforcing the unpredictability of Koshima's weather patterns.
In Koshima, Japan, the journey through the year reveals a captivating rhythm of daylight that begins with 10 hours in January and gradually climbs to a peak of 14 hours by June. May, with its 13 hours of sunlight, marks a delightful transition into longer days, as vibrant spring fully unfurls its charm. This trend of increasing daylight continues through April, allowing the natural world to flourish, before gently tapering off again in the latter half of the year. By the time October arrives, daylight retreats back to 11 hours, hinting at the approaching winter, yet the lingering warmth and extended evenings of May create an enchanting backdrop for outdoor adventures and cherished moments in nature.
In May, Koshima experiences a delightful shift in wind patterns, with an average speed of 6.6 m/s (15 mph), slightly lower than the preceding months of April and February. This gentle breeze heralds the approach of summer, offering a refreshing respite after the brisk winds of early spring. Notably, May marks the transition into calmer conditions, as wind speeds begin to taper off towards June's 6.3 m/s (14 mph). This trend of gradually decreasing wind indicates a cozy atmosphere, making it an ideal time for outdoor activities and enjoying the lush landscapes of this picturesque region.
Weather in Koshima varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Koshima, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present contrasting weather patterns. In May, temperatures range from a mild 16°C (61°F) to a warm 26°C (78°F), with an average of 22°C (71°F). The month experiences significant rainfall, totaling 273 mm (10.7 in) over about 13 days, accompanied by high humidity at 83%. In contrast, January features cooler weather, with temperatures ranging from a low of 6°C (44°F) to a maximum of 21°C (70°F) and an average of 14°C (57°F). Precipitation is much lower at 108 mm (4.2 in) over 12 days, and the humidity is relatively mild at 72%. For more details, check Koshima weather in January.
In comparing the weather of May and February, it’s evident that May is significantly warmer, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 26°C (78°F), whereas February sees cooler averages with temperatures between 7°C (44°F) and 21°C (70°F). Additionally, May has higher humidity levels at 83%, compared to February's 68%, contributing to a more muggy atmosphere. Precipitation also varies, with May experiencing a greater amount of rainfall at 273 mm (10.7 in) over 13 days, in contrast to February's 157 mm (6.2 in) spread across 16 days. For more detailed information about February weather, you can refer to Koshima weather in February.
When comparing the weather in May and March, May presents a warmer climate with average temperatures reaching 22°C (71°F) and maximums peaking at 26°C (78°F), while March averages a cooler 16°C (62°F) with maximum temperatures of 22°C (72°F). Furthermore, May experiences higher humidity levels at 83%, compared to March's 72%. Precipitation is also more significant in May, with 273 mm (10.7 in) spread over 13 days, while March sees 213 mm (8.4 in) over 16 days. For more details on the weather in March, you can check this link: Koshima weather in March.
In comparing the weather of May and April, May tends to be warmer and more humid. May's average temperature reaches 22°C (71°F) with maximums of 26°C (78°F), while April has a slightly cooler average of 19°C (66°F) and tops out at 24°C (75°F). Additionally, May experiences increased rainfall with 273 mm (10.7 in) across 13 days, compared to April's 186 mm (7.3 in) over 12 days. The humidity levels also rise in May, averaging 83% compared to April's 79%. For a closer look at April's climate, you can check out Koshima weather in April.
In May, the weather tends to be milder with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 26°C (78°F) and an average of 22°C (71°F). However, it also experiences significant rainfall, with 273 mm (10.7 in) of precipitation over 13 days and a humidity level of 83%.
In contrast, June sees a slight increase in temperature, with minimums rising to 19°C (67°F) and maximums reaching 27°C (81°F), while the average temperature settles at 24°C (76°F). This month is notably wetter, recording 491 mm (19.3 in) of rain over 19 days and a marginally higher humidity of 86%. For more insights on the weather during this time, visit Koshima weather in June.
Overall, while June is warmer and more humid, it also brings a considerable amount of precipitation compared to May.
May and July exhibit notable differences in weather patterns. In May, the temperatures range from a minimum of 16°C (61°F) to a maximum of 26°C (78°F), with an average of 22°C (71°F). This month experiences a considerable amount of rainfall, totaling 273 mm (10.7 in) over 13 days, and the humidity stands at 83%. In contrast, July sees warmer temperatures with a minimum of 23°C (73°F) and a maximum of 30°C (86°F), averaging 27°C (81°F). Rainfall increases slightly to 281 mm (11.0 in) across 17 days, accompanied by higher humidity levels of 90%. For more detailed insight into July's climate, refer to Koshima weather in July.
In May, the weather is characterized by milder temperatures, with a minimum of 16°C (61°F) and an average of 22°C (71°F), reaching a maximum of 26°C (78°F). This month experiences significant precipitation, totaling 273 mm (10.7 in) over 13 rainy days, accompanied by high humidity levels at 83%. In contrast, August is warmer, with temperatures ranging from a minimum of 24°C (76°F) to an average of 28°C (82°F), peaking at 30°C (86°F). While August sees slightly less rainfall at 214 mm (8.4 in) over 16 days, the humidity remains high at 85%. For more specific details about the weather during this month, you can visit Koshima weather in August.
May and September present distinct weather patterns, showcasing the transition between spring and autumn. In May, temperatures range from a minimum of 16°C (61°F) to a maximum of 26°C (78°F), with an average of 22°C (71°F). This month is characterized by higher humidity at 83% and considerable precipitation, totaling 273 mm (10.7 in) over 13 days. In contrast, September offers warmer conditions, with minimum temperatures of 22°C (72°F) and maximums reaching 29°C (84°F), averaging 27°C (80°F). Although September has slightly less overall precipitation at 256 mm (10.1 in), it experiences more rainy days, totaling 20. Despite the differences, both months showcase Japan's rich climatic nuances. For more details on September weather, check out Koshima weather in September.
May and October exhibit distinct weather patterns, with both months showcasing relatively warm temperatures. In May, the minimum temperature averages around 16°C (61°F) and peaks at 26°C (78°F), accompanied by higher humidity at 83% and significant precipitation of 273 mm (10.7 in) over 13 days. In contrast, October offers slightly warmer conditions with a minimum of 18°C (65°F) and a maximum of 27°C (81°F), while experiencing less rainfall at 164 mm (6.4 in), also spread over 13 days. Humidity in October is lower, at 78%, creating a more comfortable atmosphere. For more detailed information, you can check Koshima weather in October.
May and November in Koshima present distinct weather patterns, with May generally being warmer and more humid. In May, temperatures range from a minimum of 16°C (61°F) to a maximum of 26°C (78°F), with an average of 22°C (71°F). This month also sees a significant amount of rainfall, totaling 273 mm (10.7 in) over 13 days and accompanied by high humidity at 83%.
In contrast, November experiences slightly cooler temperatures, with a minimum of 13°C (56°F) and a maximum of 25°C (78°F), averaging around 20°C (68°F). The precipitation is also lower, at 150 mm (5.9 in) over the same number of days, and the humidity is somewhat reduced at 76%. For more detailed insights, you can check Koshima weather in November.
In May, temperatures range from a minimum of 16°C (61°F) to a maximum of 26°C (78°F), making it noticeably warmer than December, which has a minimum of 8°C (46°F) and a maximum of 24°C (75°F). Additionally, May experiences a higher average temperature of 22°C (71°F) compared to December's 16°C (61°F). Precipitation is also more abundant in May, with 273 mm (10.7 in) falling over 13 days, whereas December sees only 132 mm (5.2 in) across 14 days. The humidity in May is higher at 83%, while it decreases to 74% in December. For more information on December weather in the region, you can visit Koshima weather in December.
As May arrives in Koshima, the weather showcases a delightful shift towards warmer temperatures, creating a welcoming spring atmosphere. With an average temperature reaching a pleasant 22°C (71°F), residents and visitors alike enjoy milder days compared to the cooler winter months. However, this month also sees increased precipitation, with an average of 13 rainy days contributing to a lush landscape, making it significantly more humid at 83%. In contrast to the drier conditions of the preceding months, May’s blend of warmth and moisture sets the stage for vibrant natural beauty. For more details on what to expect throughout the year, visit Koshima Climate.