July Weather in Nagano, Japan

Last updated: August 21, 2025

In Nagano, Japan, July welcomes warm temperatures, peaking at a maximum of 33°C (91°F) while averaging a comfortable 22°C (73°F). Nighttime offers respite with lows around 15°C (60°F). However, this month is notably humid, with an average humidity of 92%, creating a lush, vibrant atmosphere. Visitors should also be prepared for significant rainfall, as the city experiences an average of 341 mm (13.4 in) of precipitation over 25 days, contributing to the stunning natural scenery that Nagano is renowned for.

July Temperature in Nagano

In July, Nagano, Japan, welcomes the warmth of summer with temperatures that truly reflect the season's embrace. The month kicks off with minimums around 15°C (60°F), rising to an average of 22°C (73°F) and peaking at a max of 33°C (91°F). This marked increase from the cooler preceding months shows how drastically the climate shifts, creating ideal conditions for outdoor activities and exploration. The temperature patterns highlight a trend where Nagano transitions from winter's chill to summer's vibrant warmth, making July an inviting time to experience the region’s stunning natural beauty. As the landscape blooms under the sun, visitors can delight in both the temperate climate and the rich greenery that defines this picturesque destination.

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

The chart illustrates July temperature patterns in Nagano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagano, 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).
JanFebMarAprMayJunJulAugSepOctNovDec293038485965727566564434
Data source: Temperature data for Nagano 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 Nagano

In Nagano, July stands out as the wettest month of the year, delivering an impressive 341 mm (13.4 in) of precipitation over 25 days. This significant rainfall surpasses the June total of 171 mm and greatly contributes to Nagano's lush landscapes. The intensity of the precipitation is evident as the city experiences more rainy days in July than any other month, underlining a pattern where summer brings a peak in moisture. Following July, the rainfall begins to taper off, with August witnessing a notable decline to 198 mm (7.8 in). This July spike not only marks a climatic high point but also sets the stage for the gradually easing rainfall in the late summer months, inviting a contrast between the deluge of mid-summer and the drier returns of early autumn.

July Precipitation Trends in Nagano

The chart displays monthly precipitation patterns in Nagano, 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 Nagano, July typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec14412913314116017134119819421794151
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Nagano

In July, Nagano, Japan, experiences its peak humidity, reaching a notable 92%. This rise in moisture is part of a broader trend throughout the summer months, where humidity levels remain consistently high, comparable to June and August, both also sitting at 92%. Following a gradual decline from the crisp, cooler air of winter, which saw levels around 88% in January, the humidity begins to climb in spring, averaging 78% in April before spiking dramatically during the summer. As the seasons shift into fall, humidity steadily decreases, but September still retains a significant 89%. This seasonal fluctuation highlights Nagano's transition from refreshing winter to humid summer, influencing not only the climate but also the local lifestyle.

July Average Humidity in Nagano

This chart illustrates the average monthly humidity levels in Nagano, 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 Nagano is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Nagano

In July, Nagano experiences an extreme UV Index of 11, similar to the preceding months of May and June. This signals a significant risk of harm from unprotected sun exposure, cutting burn time to just 10 minutes. As summer peaks, residents and visitors alike should take caution, utilizing protective measures like sunscreen, hats, and umbrellas to mitigate the effects of the sun. Interestingly, as we transition to August, the UV Index remains steady at 11, emphasizing the importance of vigilance throughout the season. To plan your outdoor activities safely, check out the detailed insights at Nagano UV Index.

Maximum UV Index Levels in Nagano for July

The chart shows the monthly maximum UV Index (UVI) for Nagano 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 Nagano typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46991111111110753
Data source: Nagano 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 Nagano

July in Nagano, Japan, brings a delightful 261 hours of sunshine, marking a shift in the seasonal narrative. As the warm summer months approach, light levels effectively dip from the highs of May's 300 hours, creating a harmonious balance that continues through August with 290 hours of brilliant sun. This trend reflects a typical summer pattern in Nagano, where the lush landscapes bask in sunlight, promoting vibrant outdoor activities. The gradual decline from June's 279 hours to July's totals suggests a gentle easing into the late summer, while still offering ample opportunity to enjoy the picturesque scenery and cultural festivities under the Japanese sun.

Monthly Sunshine Duration in Nagano: July Highlighted

The July sunshine duration represents the total number of hours Nagano 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.
JanFebMarAprMayJunJulAugSepOctNovDec174h224h261h279h300h279h261h290h243h217h224h208h
Data source: Nagano July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Nagano During July

In Nagano, Japan, July offers a 31% chance of sunny weather, which reflects a moderate level of sunshine compared to other months. While June tends to be the least favorable with only 22%, July shows a slight uptick but still falls short of the sunnier spring months, like April at 43%. This trend indicates that while summer brings warmth, it may not always guarantee clear skies, with the likelihood of sunshine diminishing again in August to 22%. Overall, July strikes a balance, offering some sunny days amidst the summer's characteristic humidity and occasional rain, making it a time for nature lovers to explore the beautiful landscapes while being prepared for an unpredictable forecast.

Percentage of Sunny Days in July in Nagano

The chart illustrates the percentage of sunny days in Nagano 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 Nagano experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%39%32%43%25%22%31%22%25%35%42%34%
Data source: Nagano July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Nagano in July

In Nagano, Japan, July brings a peak in daylight duration, offering residents and visitors 14 hours of sunlight. This month maintains the same generous daylight as June, allowing for ample opportunities to explore the region's stunning landscapes and outdoor activities. Following the gradual increase in daylight from the depths of winter, which starts at a mere 9 hours in January, July's brightness represents the zenith of summer's embrace, with daylight starting to wane slightly in August. This consistent pattern highlights Nagano's vibrant summer season, inviting everyone to bask in the sun’s glow before shorter days return in the fall.

Average Daylight Hours in Nagano for July

The chart illustrates the variation in daylight duration in Nagano throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 56m10h 49m11h 57m13h 8m14h 7m14h 37m14h 22m13h 30m12h 23m11h 13m10h 11m9h 40m
Data source: Nagano daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Nagano

In July, Nagano experiences one of its calmest winds of the year, with an average wind speed of just 1.3 m/s (3 mph). This slight breeze contributes to the warm summer ambiance, making the lush surroundings feel even more inviting. Interestingly, this dip in wind speed follows a gradual increase observed in the earlier months, peaking in April at 2.1 m/s (5 mph), only to decline through June and into July. As summer progresses, the wind tends to pick up slightly in August, reaching 1.5 m/s (3 mph), hinting at nature's ebb and flow. Overall, July's gentle winds set a serene backdrop for appreciating Nagano's breathtaking landscapes.

Average July Wind Speed in Nagano

The chart displays monthly wind speed patterns in Nagano, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.91.92.02.11.91.41.3 m/s1.51.61.61.61.8
Data source: Nagano July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Nagano Compares to Other Months

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

July and January present strikingly different weather patterns. In July, temperatures range from a mild 15°C (60°F) to a hot 33°C (91°F), with an average of 22°C (73°F). This month is characterized by high humidity at 92% and frequent rainfall, with 341 mm (13.4 in) of precipitation over 25 days. In contrast, January experiences much colder conditions, with temperatures plummeting to a minimum of -15°C (6°F) and reaching a maximum of just 10°C (51°F), averaging -2°C (29°F). Although it is drier than July, January still sees precipitation of 144 mm (5.7 in) across 21 days, accompanied by slightly lower humidity at 88%. For more detailed information, you can check out Nagano weather in January.

When comparing the weather in July and February, stark differences emerge. July features a warm climate with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 33°C (91°F), while February experiences much colder conditions, with temperatures plunging to a minimum of -14°C (7°F) and only reaching a maximum of 16°C (61°F). Additionally, July is characterized by high precipitation, with 341 mm (13.4 in) falling over 25 days, resulting in a humid atmosphere of 92%. In contrast, February sees significantly less rain, totaling 129 mm (5.1 in) over 19 days, and a comparatively lower humidity level of 86%. For more specific details about winter weather, you can explore Nagano weather in February.

In comparing the weather between July and March, we see a stark contrast. July experiences a warm climate with average temperatures around 22°C (73°F) and peaks reaching up to 33°C (91°F), accompanied by high humidity at 92%. Precipitation is also significant during this month, with 341 mm (13.4 in) spread across 25 days. In contrast, March offers a much cooler atmosphere, with average temperatures only reaching 4°C (39°F) and occasional highs of 21°C (70°F). Precipitation is lower at 133 mm (5.2 in) over 18 days, and the humidity level, while still fairly high, is more manageable at 81%. For more specific details, check out Nagano weather in March.

When comparing the weather in July and April, the differences are striking. July experiences much warmer temperatures, with a minimum of 15°C (60°F) and an average high of 33°C (91°F), while April is considerably cooler, starting at a minimum of -5°C (22°F) and averaging around 9°C (48°F). Additionally, July sees a significant amount of rainfall, totaling 341 mm (13.4 in) over 25 days, while April has a much lighter precipitation rate of 141 mm (5.5 in) spread over just 16 days. The humidity is also higher in July at 92%, compared to April's 78%. For a closer look at the April weather specifics, you can check Nagano weather in April.

July and May present quite different weather patterns. In July, temperatures range from a minimum of 15°C (60°F) to a maximum of 33°C (91°F), with an average of 22°C (73°F), making it considerably warmer than May, which experiences temperatures from a chilly 0°C (33°F) to a maximum of 31°C (88°F), averaging just 15°C (59°F). July is also marked by significantly higher rainfall, with 341 mm (13.4 in) recorded over 25 days, compared to May's 160 mm (6.3 in) over 16 days. Additionally, July's humidity at 92% surpasses May's more comfortable level of 81%. For more detailed information on the weather in May, visit Nagano weather in May.

In comparing the weather of July and June, July is noticeably warmer, with average temperatures ranging from a minimum of 15°C to a maximum of 33°C, whereas June has a milder average temperature, peaking at 30°C and starting at 5°C. Additionally, July experiences significantly higher precipitation, totaling 341 mm over 25 days, compared to June's 171 mm over 18 days. Although both months have high humidity levels, July's humidity is slightly higher at 92% compared to June's 88%. For more detailed information, you can visit Nagano weather in June.

In comparing the weather between July and August, we find notable differences in temperature and precipitation. July typically experiences a minimum of 15°C (60°F) and an average of 22°C (73°F), with maximum temperatures reaching up to 33°C (91°F). However, it is a quite rainy month, with precipitation amounting to 341 mm (13.4 in) over 25 days, all while humidity remains high at 92%.

In contrast, August presents slightly cooler conditions with a minimum temperature of 11°C (52°F) and an increased average of 24°C (75°F). The maximum temperature can rise to 35°C (95°F). Additionally, August sees a significant drop in precipitation, totaling 198 mm (7.8 in) over 23 days, yet maintaining the same humidity level of 92%. For further insights into August weather specifics in this region, check out Nagano weather in August.

July is characterized by warm temperatures, with a minimum of 15°C (60°F) and an average high of 33°C (91°F), making it one of the hottest months. However, this warmth comes with significant rainfall, as the month sees 341 mm (13.4 in) of precipitation over 25 days and high humidity levels at 92%. In contrast, September offers cooler temperatures, with a minimum of 7°C (44°F) and an average of 19°C (67°F), while still reaching up to 32°C (89°F) at its peak. The precipitation decreases to 194 mm (7.6 in) over 19 days, and humidity is slightly lower at 89%. For more detailed insights on the weather in September, you can check out Nagano weather in September.

In July, the weather is characterized by high temperatures, with minimums around 15°C (60°F) and maximums reaching up to 33°C (91°F). The month is also marked by significant precipitation, averaging 341 mm (13.4 in) over 25 days, coupled with high humidity levels at 92%. In contrast, October presents a more moderate climate with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 28°C (82°F), resulting in a much cooler average of 13°C (56°F). While rainfall is still present in October, it is less intense, totaling 217 mm (8.5 in) over 18 days, and humidity slightly decreases to 87%. For more detailed information on the typical conditions during this month, you can check out Nagano weather in October.

July and November present a stark contrast in weather conditions. In July, temperatures range from a minimum of 15°C (60°F) to a maximum of 33°C (91°F), with an average of 22°C (73°F). The month is notably humid, with a high average humidity of 92%, and significant rainfall totaling 341 mm (13.4 inches) over 25 days. In contrast, November experiences much cooler temperatures, with a minimum of -8°C (19°F) and a maximum of 21°C (70°F), averaging at 7°C (44°F). While November sees less precipitation overall—94 mm (3.7 inches) over 15 days—it maintains a relatively high humidity level of 85%. For those interested, you can find more details about Nagano weather in November.

July and December present stark contrasts in weather in Nagano. In July, temperatures fluctuate between a minimum of 15°C (60°F) and a maximum of 33°C (91°F), accompanied by high humidity at 92% and significant rainfall of 341 mm (13.4 in) over 25 days. In contrast, December's temperatures plunge, with a minimum of -10°C (14°F) and an average of only 1°C (34°F), though it can peak at 19°C (66°F). The month experiences less precipitation, totaling 151 mm (6.0 in) over 20 days, and slightly lower humidity at 86%. This dramatic shift in weather underscores the seasonal diversity in Nagano, making it an interesting destination year-round. For more details, check out Nagano weather in December.

Compare Nagano's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Nagano

In July, Nagano experiences a distinct shift in weather, characterized by warmer temperatures and notably high humidity. This month marks a transition from the coolness of spring to hotter days, with an average soaring to 22°C and occasional peaks reaching 33°C. However, the warmth is often accompanied by frequent rainfall, with nearly 25 days of precipitation contributing to a significant total of 341 mm. The high humidity levels can make the air feel heavier, contrasting sharply with the more comfortable conditions typical of earlier months. For a detailed look into the overall weather patterns, visit Nagano Climate.