July Weather in Yamagata, Japan

Last updated: August 21, 2025

July in Yamagata, Japan is characterized by warm temperatures and high humidity, making it a vibrant summer month. With maximums reaching 37°C (100°F) and an average temperature of 26°C (78°F), residents and visitors alike experience the season's warmth. However, the comfort of long, sunny days is often interrupted by significant rainfall, with 493 mm (19.4 in) of precipitation recorded over 22 days. The humidity level, peaking at an average of 93%, contributes to a tropical feel, creating a lush backdrop for outdoor adventures despite the frequent showers. Whether enjoying a summer festival or exploring the surrounding nature, July's climate in Yamagata offers a unique experience that captures the essence of Japanese summer.

July Temperature in Yamagata

In July, Yamagata, Japan, experiences a significant shift as summer fully sets in, showcasing minimum temperatures around 18°C (65°F) and soaring maximums that can reach up to 37°C (100°F). This month marks the peak of the warm season, with an average temperature of 26°C (78°F), providing a stark contrast to the chill of winter, where January temperatures dip as low as -8°C (18°F). With rising temperatures and increasing humidity, July presents a lively and vibrant atmosphere, ideal for outdoor activities and festivals. As the region brims with lush greenery, visitors can enjoy the warmth, which is a harmonious departure from the cold months that precede it. Overall, July encapsulates the essence of summer in Yamagata, delivering warmth and vitality to the picturesque landscape.

July Weather in Yamagata: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Yamagata, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamagata, July typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec394048566571788174645343
Data source: Temperature data for Yamagata generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Yamagata

In July, Yamagata, Japan, experiences a significant surge in rainfall, with an impressive 493 mm (19.4 in) falling over the month. This dramatic increase marks July as the wettest month of the year, nearly doubling the precipitation seen in the preceding month of June. Characterized by 22 rainy days, July not only showcases a peak in precipitation but also highlights a pattern of sustained moisture as the summer progresses. This heightened rainfall plays a crucial role in nurturing the region's lush landscapes, yet it also underscores the shift to the more intense rainy season, emphasizing the dynamic weather patterns that define Yamagata's climate.

July Precipitation Trends in Yamagata

The chart displays monthly precipitation patterns in Yamagata, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Yamagata, July typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec71791792232292454933222982347494
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Yamagata

In July, Yamagata, Japan, experiences a significant peak in humidity, soaring to an impressive 93%. This increase is part of a broader trend observed throughout the summer months, where humidity levels consistently rise from June’s already high 87%. Following the spring months, which showcase a gradual decline in humidity, July serves as a reminder of the region's muggy climate, as it transitions into the sultry embrace of August with a slightly lower yet still notable 91% humidity. Overall, this pattern highlights the substantial moisture present in the air during the peak of summer, making July one of Yamagata's most humid months.

July Average Humidity in Yamagata

This chart illustrates the average monthly humidity levels in Yamagata, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Yamagata is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Yamagata

In July, Yamagata, Japan, experiences its peak UV Index of 11, maintaining an extreme exposure category that calls for heightened sun safety measures. With a burn time of just 10 minutes, it's crucial to take precautions if you're spending time outdoors. This trend of elevated UV levels, which ramped up from 8 in March to an unyielding 11 in May through August, highlights the region's summer intensity. As temperatures rise, so do the risks associated with sun exposure, illustrating the importance of proactive skincare and protective clothing during these months. For more detailed information, check out Yamagata UV Index.

Maximum UV Index Levels in Yamagata for July

The chart shows the monthly maximum UV Index (UVI) for Yamagata in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Yamagata typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Yamagata July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

July Sunshine in Yamagata

In Yamagata, Japan, July shines with a respectable 262 hours of sunshine, contributing to the vibrant summer atmosphere. After peaking in May with 295 hours, the sunshine begins to taper off, yet still provides plenty of warmth and light amidst the lush landscapes. Following the higher sunshine totals of April and June, July maintains a bright disposition, setting the stage for the idyllic summer days that will lead into the sun-drenched August, which boasts an impressive 300 hours. Overall, the data reveals a clear trend of increasing sunshine during the spring months, peaking just before the intense summer heat, highlighting Yamagata's unique charm as a summer destination.

Monthly Sunshine Duration in Yamagata: July Highlighted

The July sunshine duration represents the total number of hours Yamagata experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec181h228h265h280h295h274h262h300h247h239h237h216h
Data source: Yamagata July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Yamagata During July

In Yamagata, Japan, the likelihood of experiencing sunny weather in July is around 32%, reflecting a notable dip compared to the earlier months. While spring ushers in a gradual increase in sunshine—peaking in April at 47%—the summer months, particularly June and July, witness a decline in sunny days. This trend continues into August, where the chance of sun drops to 26%. Despite this, the late summer and autumn months, especially October and November, regain brightness, boasting chances as high as 58% and 59% respectively. Thus, while July may not be the sunniest month in Yamagata, the vibrant sunny days do eventually return as the year progresses.

Percentage of Sunny Days in July in Yamagata

The chart illustrates the percentage of sunny days in Yamagata throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Yamagata experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec41%43%42%47%28%24%32%26%29%58%59%47%
Data source: Yamagata July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Yamagata in July

In Yamagata, Japan, July boasts a consistent daylight duration of 14 hours, mirroring the light-filled months of May and June. This peak in sunlight marks the height of summer, allowing residents and visitors alike to bask in long, sun-drenched days. As the year progresses from the stark 10 hours in January and February to this summer high, a clear trend emerges: the days grow increasingly longer as spring unfolds into summer, only to gradually taper off again in August with 13 hours of daylight. These shifts not only enhance the region's vibrant seasonal activities but also create a rhythmic pattern that defines the passage of time in Yamagata.

Average Daylight Hours in Yamagata for July

The chart illustrates the variation in daylight duration in Yamagata throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 3m10h 53m11h 58m13h 5m14h 1m14h 29m14h 15m13h 26m12h 22m11h 15m10h 17m9h 47m
Data source: Yamagata daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Yamagata

In July, Yamagata, Japan experiences its calmest winds of the year, with an average speed dropping to just 1.5 m/s (3 mph). This is a notable decline following the moderate breezes of the previous months, where wind speeds hovered around 2.4 m/s to 2.9 m/s. As summer settles in, the typically gentle winds of July create a serene atmosphere, contrasting sharply with the increasing gusts seen from earlier in the year. It's a unique period when the region's natural beauty can be savored without the interruption of strong winds, allowing for perfect summer days under a sun-drenched sky.

Average July Wind Speed in Yamagata

The chart displays monthly wind speed patterns in Yamagata, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.82.92.92.41.91.5 m/s2.31.62.22.32.5
Data source: Yamagata July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Yamagata Compares to Other Months

Weather in Yamagata varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Yamagata, focusing on differences in temperature, rainfall, humidity, and UV levels.

July and January present stark contrasts in weather. In July, temperatures soar, with a minimum of 18°C (65°F) and average highs reaching up to 37°C (100°F), coupled with high humidity at 93%. Rainfall is significant, with 493 mm (19.4 in) falling over 22 days. In contrast, January experiences a much chillier climate, where temperatures dip to a minimum of -8°C (18°F) and an average of just 4°C (39°F), with maximums capping at 16°C (60°F). Precipitation is minimal in comparison, totaling only 71 mm (2.8 in) over 11 days, and humidity stands at a lower 82%. For more detailed insights on winter conditions, check out Yamagata weather in January.

In comparing the weather of July and February, it's clear that these two months offer dramatically different climates. July boasts a warm average temperature of 26°C (78°F), with highs reaching up to 37°C (100°F), making it the hottest month of the year. However, it also sees considerable precipitation, totaling 493 mm (19.4 in) over 22 days, and a high humidity level of 93%. In contrast, February presents a much cooler scene, with an average temperature of just 4°C (40°F) and maximums of 20°C (68°F). Precipitation is significantly lower at 79 mm (3.1 in) over only 9 days, coupled with a humidity of 79%. This stark seasonal difference showcases the seasonal contrasts in Yamagata’s climate. For more insights into February weather specifically, visit Yamagata weather in February.

July and March present stark contrasts in weather patterns. In July, temperatures soar, with an average of 26°C (78°F) and peaks reaching a scorching 37°C (100°F), while March offers a cooler climate with an average of just 9°C (48°F) and maximums of 23°C (74°F). Additionally, July is characterized by high humidity at 93% and substantial rainfall, receiving 493 mm (19.4 in) over 22 days, compared to March's more moderate precipitation of 179 mm (7.1 in) across 13 days. For a more in-depth look at March weather, you can visit Yamagata weather in March.

July weather presents a stark contrast to that of April. The temperatures soar in July, with a minimum of 18°C (65°F) and an average of 26°C (78°F), reaching highs of up to 37°C (100°F). In addition, July is characterized by significant rainfall, with 493 mm (19.4 in) of precipitation over 22 days and a high humidity level of 93%. In comparison, April features much cooler temperatures, ranging from a minimum of 0°C (32°F) to a maximum of 27°C (82°F), with an average of 13°C (56°F). Precipitation in April is notably lower at 223 mm (8.8 in) over 12 days and a humidity level of 76%. For a closer look at April's weather specifics, you can explore Yamagata weather in April.

In comparing the weather of July and May, it's clear that July is significantly warmer and more humid. The average temperature in July reaches 26°C (78°F), peaking at a scorching 37°C (100°F), while May sees a much cooler average of 18°C (65°F) with a maximum of 30°C (87°F). Additionally, July experiences higher precipitation, with 493 mm (19.4 in) falling over 22 days, compared to May’s 229 mm (9.0 in) over just 12 days. The humidity also rises with July's average at 93%, compared to May's 83%. For more detailed insights, you can visit Yamagata weather in May.

In comparing the weather of July to June, July is notably hotter and more humid. The minimum temperature in July is 18°C (65°F), which is a significant increase from June's minimum of 12°C (53°F). The average temperature also rises to 26°C (78°F) in July, compared to June's average of 22°C (71°F). Additionally, July experiences higher maximum temperatures, reaching up to 37°C (100°F), while June peaks at 31°C (89°F).

However, July also brings considerably more rainfall, with 493 mm (19.4 in) of precipitation over 22 days, whereas June has only 245 mm (9.7 in) over 13 days. The humidity level in July climbs to 93%, slightly higher than June's 87%. For a detailed overview of June weather, you can check Yamagata weather in June.

In comparing the weather between July and August, we observe that both months experience similar temperature ranges, with July averaging 26°C (78°F) and August slightly warmer at 27°C (82°F). The maximum temperatures for both months peak at 37°C (100°F) in July and 38°C (100°F) in August, indicating a consistent warmth. However, August sees a decrease in precipitation, with 322 mm (12.7 in) over 18 days compared to July's substantial 493 mm (19.4 in) over 22 days. Humidity levels are also slightly lower in August at 91%, compared to July's 93%, making August a marginally less humid month overall. For more details, you can check Yamagata weather in August.

In July, the weather can be quite extreme, with temperatures ranging from a minimum of 18°C (65°F) to a scorching maximum of 37°C (100°F), accompanied by high humidity levels of 93% and significant rainfall of 493 mm (19.4 in) over 22 days. In contrast, September offers a more moderate climate, with temperatures dropping to a minimum of 12°C (54°F) and a maximum of 35°C (95°F), resulting in a comfortable average of 23°C (74°F). Additionally, rainfall decreases to 298 mm (11.7 in) spread over 16 days and humidity levels also lower to 87%. For those interested in what to expect during this month, you can find more details here: Yamagata weather in September.

The weather in July is markedly warmer and more humid compared to October. During July, average temperatures hover around 26°C (78°F), peaking at highs of 37°C (100°F) while experiencing significant rainfall, with 493 mm (19.4 in) spread across 22 days and a high humidity level of 93%. In contrast, October brings a cooler climate with average temperatures of 18°C (64°F) and maximums reaching 31°C (88°F). This month also sees a reduction in precipitation, totaling 234 mm (9.2 in) over 14 days, and a slightly lower humidity of 85%. For more detailed weather information, you can check Yamagata weather in October.

July and November present strikingly different weather conditions. In July, temperatures soar with a minimum of 18°C (65°F) and an average of 26°C (78°F), reaching a maximum of 37°C (100°F). The month is characterized by high humidity at 93%, along with significant precipitation totaling 493 mm (19.4 in) over 22 days. In contrast, November offers a much cooler climate, with minimum temperatures dropping to 1°C (33°F) and an average of 12°C (53°F), peaking at 22°C (72°F). The precipitation is considerably lower at 74 mm (2.9 in) across just 7 days, and humidity levels also decrease to 83%. For more insights into this month, check out Yamagata weather in November.

July and December present a striking contrast in weather. In July, temperatures soar with a minimum of 18°C (65°F) and an average of 26°C (78°F), peaking at a scorching 37°C (100°F). This month is also characterized by high humidity at 93% and significant rainfall, with 493 mm (19.4 in) of precipitation over 22 days. In stark contrast, December brings much cooler conditions, with temperatures dropping to a minimum of -5°C (23°F) and averaging around 6°C (43°F), reaching a maximum of 18°C (65°F). Precipitation decreases sharply to 94 mm (3.7 in) over just 12 days, and humidity levels are slightly lower at 83%. For more details on December weather, you can visit Yamagata weather in December.

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Conclusion: What to Expect From July Weather in Yamagata

In July, Yamagata's weather shifts dramatically, embracing the peak of summer with high temperatures and significant humidity. The average temperature soars, offering warm days that contrast sharply with the cooler months. Frequent precipitation, often taking the form of heavy rain, marks this time, leading to an elevated number of wet days that can bring a lush vibrancy to the region. The high humidity adds an intensity to the warmth, creating a uniquely tropical atmosphere. For those looking to explore the varied climatic experiences, July undoubtedly stands out as a time of contrast and vitality. For more insights on the climate throughout the year, visit Yamagata Climate.