Last updated: August 21, 2025
In April, Itoigawa, Japan, experiences a dynamic transition into spring, characterized by maximum temperatures reaching a pleasant 21°C (70°F), while the average settles around 9°C (49°F). Nighttime can still be brisk, with minimums dipping to -1°C (31°F). The month sees significant precipitation, totaling 174 mm (6.9 in), spread over approximately 15 days, contributing to a rich, green landscape. Notably, the humidity level remains elevated at 78%, enhancing the overall freshness of the spring air.
In April, Itoigawa begins to shake off the chill of winter, with temperatures showcasing a positive upward trend. The month opens with chilly minimums around -1°C (31°F), but quickly warms up to a pleasant average of 9°C (49°F), peaking at 21°C (70°F) during the day. This notable rise from the lows of previous months heralds the arrival of spring, inviting both locals and visitors to enjoy the blossoming landscapes. As the city transitions from the cold grasp of March, April sets the stage for even warmer days ahead, marking a delightful shift in the seasonal narrative of Itoigawa’s climate.
April in Itoigawa, Japan typically sees a moderate precipitation amount of 174 mm (6.9 in), resembling the wetness of March but slightly less intense. This month registers around 15 days of rainfall, marking a transition toward drier conditions as the region prepares for spring. Notably, the precipitation in April paves the way for the lush greenery that characterizes the landscape later in the season. After an abundant winter, the rainfall in April is part of a broader trend—one that shows a consistent tapering off as temperatures rise, with May and June experiencing even less precipitation. This gradual decrease suggests a shift from the heavy winter rains, setting the stage for the upcoming dry months of summer.
In April, Itoigawa, Japan experiences a noticeable shift in humidity, dropping to 78% from March's 81%. This decline marks the beginning of a gradual easing that continues into the warmer months, contrasting sharply with the peak humidity levels seen in the summer. As spring unfolds, residents and visitors alike can enjoy a more comfortable atmosphere, paving the way for the lush landscapes and blooming flowers typical of this vibrant season. Following April, humidity levels begin to climb once again, reaching 81% in May and setting the stage for the humid summers ahead. This rhythm of humidity reflects the region's seasonal transitions, enhancing Itoigawa's distinct character throughout the year.
As April rolls into Itoigawa, Japan, the UV Index takes a notable leap, reaching a striking 9, classified as very high. This sharply contrasts with the more moderate levels seen earlier in the year, where January and February maintained a UV Index of 3 and 5 respectively. With burn time dropping to just 15 minutes, it’s essential for residents and visitors alike to be vigilant about sun safety. This trend of increasing UV levels peaks in May and June, where the index remains at an extreme 10. As summer approaches, the need for sun protection becomes increasingly paramount. To stay informed about the UV Index throughout the year, check the details at Itoigawa UV Index.
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In April, Itoigawa, Japan, basks in a significant leap of sunshine, boasting 280 hours of radiant light—a remarkable increase compared to the preceding months. This steady climb from January's modest 148 hours marks the onset of spring, with each month unveiling more sunlight, peaking in May with an impressive 303 hours. The trend showcases the transition from winter's retreat to the vibrant embrace of spring, inviting both locals and visitors to revel in longer days and the blossoming beauty of the surrounding landscapes. As the season progresses, sunshine levels gradually stabilize over the summer months, with June and July still offering abundant hours, albeit slightly diminished, hinting at the gradual shift toward autumn by September. Such patterns not only highlight Itoigawa’s inviting climate but also celebrate the joy of revitalization brought by the sun.
As April unfolds in Itoigawa, Japan, it brings the promise of brighter days, with the likelihood of sunny weather rising to 45%—a significant leap from the preceding months. This increase highlights a notable trend as the city transitions from the dreary grip of winter; in contrast, January starts with a modest 21%, climbing steadily through winter before reaching a peak in April. Following the vibrant month of April, the chance of sunshine dips slightly in May to 30% and continues to fluctuate throughout the summer months. The April sun heralds the onset of spring, making it an opportune time for outdoor activities and enjoying the blossoming landscape.
In April, Itoigawa, Japan, basks in an invigorating 13 hours of daylight, a noticeable increase from the 11 hours seen in March. This boost heralds the arrival of spring, offering residents and visitors alike more time to enjoy the blossoming landscapes and outdoor activities. As daylight continues to extend through the months, reaching a peak of 14 hours in both May and June, the sense of renewal and vitality becomes palpable. The gradual shift from the shorter winter days to the longer sunlit hours not only enhances the beauty of the city but also invigorates the community, inviting longer strolls beneath cherry blossoms and celebrations of nature's revival.
In April, Itoigawa experiences a gentle embrace of the winds, maintaining a steady average speed of 2.5 m/s (6 mph), similar to the preceding month of March. This transition marks a notable shift from the brisk winds of January and February, which hovered around 3.4 m/s (8 mph) and 3.9 m/s (9 mph), respectively. As the seasons progress, April's calming breezes hint at the warmer days ahead, gradually leading into May, where the winds pick up slightly again at 2.7 m/s (6 mph). This pattern reveals a clear trend: as winter yields to spring, Itoigawa's winds tend to soften, creating a serene atmosphere that complements the blossoming landscape. As the year moves forward, residents can expect a more tranquil wind environment, with speeds dipping further during the summer months.
Weather in Itoigawa varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Itoigawa, focusing on differences in temperature, rainfall, humidity, and UV levels.
April generally marks a transition to milder weather compared to the chillier January. While January experiences lower temperatures with an average of 2°C (35°F) and minimums dropping to -5°C (23°F), April boasts a more pleasant average temperature of 9°C (49°F) and can reach as high as 21°C (70°F). However, April sees a significant increase in precipitation compared to January, with 174 mm (6.9 in) falling over approximately 15 days, while January records 263 mm (10.4 in) over 23 days. Humidity levels also differ, with January being more humid at 88%, compared to April's 78%. For more details, you can refer to Itoigawa weather in January.
April and February present quite a contrast in weather patterns. While April boasts a warmer temperature range with a minimum of -1°C and an average of 9°C, February is chillier, averaging just 2°C with a lower maximum of 12°C. Precipitation is more frequent in February, occurring over 22 days and totaling 235 mm, compared to April's 15 days and 174 mm. Additionally, February has higher humidity at 86%, compared to April's 78%, which can make the cold feel even more biting. For a detailed look at February's weather, you can check Itoigawa weather in February.
April generally sees milder temperatures compared to March, with average highs reaching 21°C (70°F) compared to March's maximum of 16°C (61°F). The minimum temperatures in April also rise to -1°C (31°F), while March records slightly cooler lows at -4°C (24°F). Additionally, both months experience similar levels of precipitation, with April receiving 174 mm (6.9 in) over 15 days and March recording 175 mm (6.9 in) over 18 days. Humidity levels are slightly lower in April at 78%, compared to March's average of 81%. For more detailed weather insights, you can check Itoigawa weather in March.
April and May exhibit notable differences in weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a maximum of 21°C (70°F), with a cool average of 9°C (49°F). In contrast, May sees a significant warming trend, with early temperatures starting at a minimum of 6°C (42°F) and reaching up to 26°C (79°F), resulting in a much milder average of 15°C (59°F). Although both months experience precipitation on 15 days, April receives a higher total of 174 mm (6.9 in) compared to May's 138 mm (5.4 in). Humidity levels also increase slightly, with April at 78% and May at 81%. For more specific insights into May’s weather, check Itoigawa weather in May.
When comparing the weather in April and June, it is clear that June is generally warmer and wetter. In April, temperatures range from a minimum of -1°C (31°F) to a maximum of 21°C (70°F), with an average temperature of 9°C (49°F). In contrast, June sees a significant increase in warmth, with temperatures ranging from 10°C (51°F) to 26°C (80°F) and an average of 19°C (66°F). Precipitation levels are also similar; April experiences 174 mm (6.9 in) over 15 days, while June has slightly less at 168 mm (6.6 in) across 13 days. Additionally, June tends to have a higher humidity at 88% compared to April's 78%. For a more detailed look at the weather conditions in June, you can visit Itoigawa weather in June.
April and July exhibit stark contrasts in weather patterns. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 21°C (70°F), with an average of 9°C (49°F). The month is characterized by relatively moderate precipitation, totaling 174 mm (6.9 in) over approximately 15 days, accompanied by a humidity level of 78%. In contrast, July experiences much warmer temperatures, with a minimum of 18°C (64°F) and soaring daytime highs reaching 34°C (94°F), averaging around 24°C (75°F). However, this warmth comes with increased precipitation, totaling 347 mm (13.7 in) over 23 days and a notably higher humidity level of 92%. For a detailed look at July weather, visit Itoigawa weather in July.
When comparing the weather in April and August, notable differences emerge in temperature and precipitation. In April, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 21°C (70°F), with an average of 9°C (49°F). In contrast, August boasts much warmer conditions, with minimum temperatures starting at 18°C (64°F) and reaching a maximum of 33°C (91°F), averaging 26°C (78°F).
Precipitation levels are also higher in August, totaling 265 mm (10.4 in) over 20 days, compared to April's 174 mm (6.9 in) across 15 days. Additionally, humidity soars in August to 92%, which is noticeably higher than April's 78%. For a detailed look at the August weather in Itoigawa, visit Itoigawa weather in August.
April and September present contrasting weather conditions. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 21°C (70°F), with an average of 9°C (49°F). However, this month is marked by significant precipitation, totaling 174 mm (6.9 in) over 15 days, and humidity levels at 78%. In contrast, September warms up considerably, with minimum temperatures starting at 13°C (56°F) and peaking at 32°C (90°F), averaging around 22°C (72°F). This month is also wetter, experiencing 265 mm (10.4 in) of rain across 21 days, accompanied by higher humidity levels at 89%. For more detailed insights into September's weather, you can check Itoigawa weather in September.
April and October present distinct weather characteristics that highlight the transition between seasons. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 21°C (70°F), with an average of 9°C (49°F). The month sees about 174 mm (6.9 in) of precipitation over 15 days, coupled with a relative humidity of 78%. In contrast, October enjoys milder temperatures, with a minimum of 8°C (47°F) and a maximum reaching 28°C (82°F), averaging 16°C (62°F). However, it experiences more rainfall at 258 mm (10.2 in) spread across 18 days and higher humidity at 87%. For a more detailed look at October weather specifics, you can refer to Itoigawa weather in October.
April and November present contrasting yet mild weather conditions. In April, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 21°C (70°F), with an average of 9°C (49°F). The month experiences significant rainfall, totaling 174 mm (6.9 in) over approximately 15 days, and the humidity averages around 78%.
In comparison, November sees slightly warmer temperatures with a minimum of 0°C (32°F) and a maximum of 22°C (71°F), and an average of 11°C (51°F). Precipitation increases to 185 mm (7.3 in) over 19 days, alongside a higher humidity level of 85%. For a closer look at how November weather shapes up, you can explore the details in this link: Itoigawa weather in November.
April and December present markedly different weather patterns. In April, temperatures range from a minimum of -1°C (31°F) to a maximum of 21°C (70°F), with an average of 9°C (49°F). This month typically sees about 15 days of precipitation, totaling 174 mm (6.9 in), and the humidity hovers around 78%. In contrast, December experiences colder temperatures, with a minimum of -4°C (26°F) and an average of just 4°C (40°F), peaking at 18°C (65°F). Rainfall is notably higher, with 294 mm (11.6 in) spread over 24 days, leading to increased humidity levels of 86%. For more details on December weather, visit Itoigawa weather in December.
As April unfolds in Itoigawa, it marks a notable transition from the chill of winter to the embrace of spring. With temperatures gradually rising, the city experiences a refreshing warmth that invites both residents and visitors to enjoy the blooming landscape. However, April is also characterized by increased precipitation, with showers occurring on nearly half the days of the month, contributing to the lush greenery that begins to emerge. This blend of mild temperatures and elevated humidity fosters a vibrant atmosphere, making it distinctly different from both the frigid winter months and the hotter summer season. For more insights on the climate patterns that shape this beautiful region, explore Itoigawa Climate.