Last updated: August 21, 2025
In June, Koshi, Japan experiences a vibrant tapestry of weather, with maximum temperatures reaching up to 32°C (89°F) and an average of 23°C (73°F), offering a warm embrace. While the season invites outdoor activities, be prepared for occasional showers, as the area sees approximately 274 mm (10.8 in) of precipitation over about 15 days. The air is often thick with humidity levels peaking at 86%, creating a lush environment that enhances the region's natural beauty. Embrace the warmth, but don’t forget your umbrella!
In Koshi, Japan, June marks a significant transition in temperatures as the region warms up in preparation for the summer. With minimums rising to 13°C (55°F) and averages reaching 23°C (73°F), the month showcases a vibrant boost from the preceding spring. The maximum temperatures can soar to 32°C (89°F), offering delightful warmth for outdoor activities and festivals. This notable increase in warmth from May, where temperatures peak at 30°C (86°F), highlights the oncoming summer fervor. As June progresses, residents and visitors alike enjoy the blossoming landscape and the pleasant, balmy evenings that signal the start of a lively summer season in Koshi.
In June, Koshi, Japan, experiences a significant spike in precipitation, registering 274 mm (10.8 in) over 15 days. This marks a noticeable increase from the previous months, reflecting the onset of the rainy season. The pattern continues a trend of escalating rainfall, peaking in July with 478 mm (18.8 in), but June’s heavy downpours already signal a dramatic shift from the lighter, more scattered rains of spring. This month not only sets the stage for the torrential rains to follow but also underscores the region’s distinct seasonal transitions marked by rapidly changing weather patterns. As the lush landscape becomes increasingly vivid, June embodies the vibrant yet unpredictable nature of Koshi's climate.
In June, Koshi, Japan, experiences a notable increase in humidity, reaching 86%, marking a peak that signals the onset of the summer season. This rise continues the trend established in the preceding months, particularly after May, which already saw a substantial humidity level of 84%. As the year progresses, the humidity levels steadily climb, with July and August often hitting their highest points at 92% and 91%, respectively. This pattern highlights the region's transition to a distinctly humid summer climate, emphasizing the rather damp and muggy conditions that residents and visitors can expect. The gradual shift from the cooler months, with January's 75% humidity, reflects the dynamic nature of Koshi's weather, making June a pivotal month in its humidity journey.
In June, Koshi, Japan, experiences a consistently extreme UV Index of 11, mirroring the trend set by April and May. This potency means that sun exposure during this month is not just high; it requires vigilant protection to avoid skin damage, with a burn time of only 10 minutes. As we transition into the summer months, the UV Index continues to escalate, reaching a peak of 12 in July and August. This rising trend serves as a reminder for residents and visitors alike to stay informed and take precautions against UV radiation. To learn more about UV levels throughout the year, visit Koshi UV Index.
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June in Koshi, Japan, is a vibrant time as the region basks in 254 hours of sunshine, a delightful continuation of the spring's warmth. Following the month's peak in May with 283 hours, June experiences a slight dip but remains bright and cheerful, paving the way for the summer months ahead. This change in the weather reflects a consistent trend where sunshine steadily increases from January's 178 hours to a peak in the summer, particularly in August, which enjoys a glorious 294 hours. As the year progresses, the sunshine not only brightens the days but also sets the stage for the lush landscapes that characterize the region, illustrating nature’s beautiful ebb and flow throughout the seasons.
As June approaches in Koshi, Japan, the likelihood of sunny weather begins to dwindle, reaching its annual low at 22%. This decline follows a trend that starts from the relatively brighter days of spring, where sunshine chances hover around 28% in May and modestly rise in April and March. The onset of summer, too, sees a further drop in sunny probabilities, with July and August showing even less sunshine at 18% and 26%, respectively. As the year progresses into the autumn months, the probability of sunny weather rebounds significantly, peaking in October at an impressive 64%. Overall, June serves as a transition month, highlighting a dip in sunshine that signals the more overcast conditions typical of the season.
In Koshi, Japan, the gradual lengthening of daylight hours throughout the spring and early summer months is a beautiful transition that culminates in June, when daylight reaches a remarkable 14 hours. Starting from a consistent 10 hours in January and February, the days steadily grow longer, adding an hour in March and another in April, as nature awakens. May brings an additional hour, paving the way for the longest daylight period of the year in June, where residents and visitors alike can bask in the extended sunshine. This trend of prolonged daylight continues into July, before beginning a gentle decline in August, as the days shorten back to 13 hours. Such fluctuations not only mark the changing seasons but also create opportunities for outdoor activities and community gatherings, fostering a vibrant atmosphere in this picturesque region.
In June, the winds in Koshi, Japan take a gentle turn, with an average speed of just 1.6 m/s (4 mph), making it the calmest month of the year. This decline from the slightly steadier breezes of April and May, which both hover around 2.4 m/s (5-6 mph), signals a notable shift as summer approaches. While the winds begin to pick up again in July and August, returning to a more typical range of 2.3 m/s (5 mph), June’s tranquil atmosphere creates a serene backdrop, inviting residents and visitors to relish the beauty of the season's onset.
Weather in Koshi varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Koshi, focusing on differences in temperature, rainfall, humidity, and UV levels.
June and January present stark contrasts in weather conditions. In June, temperatures range from a cool 13°C (55°F) to a warm 32°C (89°F), with an average of 23°C (73°F), reflecting the peak of summer. The month also experiences significant rainfall, with around 274 mm (10.8 in) over approximately 15 days and high humidity at 86%. In comparison, January brings much colder temperatures, with a range from a frigid -5°C (24°F) to a milder 17°C (63°F) and an average of just 6°C (42°F). Precipitation is less frequent in January, totaling 54 mm (2.1 in) over about 6 days, and the humidity is notably lower at 75%. For a more detailed look at the weather in January, you can visit Koshi weather in January.
June and February showcase stark contrasts in weather. In June, temperatures range from a chilly 13°C (55°F) at night to a warm 32°C (89°F) during the day, with an average of 23°C (73°F). This month experiences considerable rainfall, with 274 mm (10.8 in) of precipitation over 15 days and high humidity at 86%. In contrast, February is much colder, with temperatures dipping as low as -5°C (24°F) at night and peaking at only 20°C (69°F) during the day, leading to an average of 7°C (44°F). While February sees significantly less rainfall at 96 mm (3.8 in) over 10 days and lower humidity at 71%, it presents its own unique winter charm. For more detailed insights on February weather, visit Koshi weather in February.
June and March present quite contrasting weather conditions. In June, temperatures range from a minimum of 13°C (55°F) to a maximum of 32°C (89°F), with an average of 23°C (73°F). This month is characterized by high humidity at 86% and substantial rainfall, totaling 274 mm (10.8 in) over 15 rainy days. Conversely, March sees much cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 24°C (75°F), averaging only 11°C (52°F). Precipitation during March is considerably lower at 131 mm (5.2 in), occurring over 12 days, accompanied by a more moderate humidity level of 71%. For more detailed information about the weather conditions in March, you can check Koshi weather in March.
June and April exhibit significant differences in their weather patterns. June tends to be warmer, with average temperatures reaching 23°C (73°F) compared to April's cooler average of 15°C (59°F). Additionally, June experiences higher maximum temperatures, peaking at 32°C (89°F) versus April's 28°C (82°F). However, June is also much wetter, with 274 mm (10.8 in) of precipitation over 15 days, while April sees only 132 mm (5.2 in) across 9 days. The humidity in June is notably higher at 86%, compared to April's 78%. For more information on the weather in April, you can visit Koshi weather in April.
In comparing the weather between May and June, June tends to be warmer and wetter. June's average temperature reaches 23°C (73°F) with a minimum of 13°C (55°F) and a maximum of 32°C (89°F). In contrast, May features cooler temperatures, averaging 19°C (67°F) with a minimum of 6°C (43°F) and a maximum of 30°C (86°F). Additionally, June experiences more precipitation, with 274 mm (10.8 in) over 15 days, compared to May's 213 mm (8.4 in) over 12 days. Humidity also slightly increases in June to 86%, up from May's 84%. For more detailed insights, check out Koshi weather in May.
In comparing the weather between June and July, July tends to be warmer and more humid. June features an average temperature of 23°C (73°F) with a minimum of 13°C (55°F) and a maximum of 32°C (89°F), whereas July sees higher averages, peaking at 35°C (96°F) with a minimum of 17°C (63°F) and an average of 26°C (79°F). Precipitation also increases significantly in July to 478 mm (18.8 in), compared to June's 274 mm (10.8 in), and the number of rainy days rises from 15 to 20. Additionally, July's humidity levels are higher at 92% compared to June's 86%. For more detailed information, you can check Koshi weather in July.
June and August present notably different weather experiences, though both months share similar amounts of precipitation. June tends to have cooler temperatures, with a minimum of 13°C (55°F) and an average of 23°C (73°F), peaking at a maximum of 32°C (89°F). In contrast, August is warmer overall, with temperatures ranging from a minimum of 18°C (65°F) to an average of 28°C (82°F) and a maximum of 35°C (96°F). Both months see around 274-277 mm (10.8-10.9 in) of rainfall over approximately 15 days, but August's increased humidity at 91% compared to June's 86% adds to the summer heat. For a detailed look at August weather conditions, you can refer to Koshi weather in August.
In June, temperatures range from a minimum of 13°C (55°F) to a maximum of 32°C (89°F), with an average of 23°C (73°F). The month is characterized by high humidity at 86% and significant rainfall, totaling 274 mm (10.8 in) across about 15 days. In contrast, September offers slightly warmer average temperatures, with a minimum of 12°C (53°F) and a maximum of 34°C (94°F), averaging 24°C (76°F). The precipitation is lower at 184 mm (7.2 in) over 14 days, and humidity is marginally lower at 84%. Overall, while both months are humid and rainy, September tends to be warmer and drier than June. For more specifics on September weather, you can check Koshi weather in September.
June and October present quite contrasting weather patterns. June tends to be warmer, with average temperatures peaking at 23°C (73°F) and maximums reaching up to 32°C (89°F), accompanied by high humidity levels of 86%. However, it's also quite rainy, with approximately 274 mm (10.8 in) of precipitation over 15 days. In contrast, October offers cooler temperatures, with an average of 19°C (66°F) and a minimum dipping to 6°C (44°F). Rainfall is significantly less, totaling around 107 mm (4.2 in) over just 8 days, while humidity is slightly lower at 83%. For more specifics on precipitation and climate patterns, you can explore Koshi weather in October.
June and November present distinctly different weather patterns. In June, temperatures range from a minimum of 13°C (55°F) to a maximum of 32°C (89°F), with an average of 23°C (73°F) and high humidity at 86%. This month also experiences significant rainfall, totaling 274 mm (10.8 in) over approximately 15 days. In contrast, November's climate is much cooler, with temperatures dropping to a minimum of -1°C (30°F) and peaking at 25°C (77°F), averaging around 12°C (55°F). Precipitation is lighter in November, accumulating to 60 mm (2.4 in) across about 7 days, and humidity levels are slightly lower at 81%. For more detailed weather insights for November, you can check out Koshi weather in November.
June and December exhibit stark contrasts in weather conditions. In June, temperatures range from a mild 13°C (55°F) at night to a warm 32°C (89°F) during the day, with an average of 23°C (73°F). This month is characterized by high humidity levels at 86% and significant rainfall, totaling 274 mm (10.8 in) over 15 days, creating a lush and vibrant atmosphere. In contrast, December brings much cooler temperatures, with lows dipping to -2°C (29°F) and highs peaking at 22°C (72°F), averaging only 7°C (45°F). The month sees considerably less precipitation at 71 mm (2.8 in) across just 7 days, and a lower humidity of 79%. This shift from the humid warmth of June to the cooler and drier conditions of December is quite pronounced. For more insight into December weather specifics, check out Koshi weather in December.
In June, Koshi experiences a notable shift in weather patterns, marked by warmer temperatures and increased humidity, creating a contrasting scene compared to the cooler, drier months that precede it. With daily conditions often reaching average highs of 23°C, the increased precipitation—spanning 15 days—and 274 mm of rain contribute to a lush landscape, but can also lead to a humid environment with levels around 86%. This transition not only refreshes the natural surroundings but also invites visitors to embrace the vibrancy of the season. For a deeper understanding of what to expect, visit Koshi Climate.