June Weather in Yamaguchi, Japan

Last updated: August 21, 2025

In June, Yamaguchi, Japan experiences a vibrant transition into summer, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 31°C (89°F) and an average of 22°C (73°F). This month is characterized by a relatively high humidity level of 88%, contributing to a warm and often muggy atmosphere. Rainfall is also significant, with a total of 198 mm (7.8 in) over approximately 13 days, underscoring the importance of preparing for wet conditions amidst the lush greenery and blooming landscapes that define this time of year. Whether you’re exploring local attractions or enjoying the natural beauty, June in Yamaguchi offers a unique blend of warmth and moisture that creates a distinct summer experience.

June Temperature in Yamaguchi

In June, Yamaguchi, Japan, begins to embrace the warmth of summer, with temperatures showcasing a significant rise compared to the spring months. The minimum temperature settles at a comfortable 12°C (54°F), while the average escalates to a pleasant 22°C (73°F), making outdoor activities increasingly enjoyable. With a maximum temperature peaking at 31°C (89°F), June marks a transition into the heat of summer, inviting locals and visitors alike to relish in the sunny days. This month not only brings warmer days but also hints at the sultry July heat around the corner, as the region's climate starts to shift from the mildness of spring to a more vibrant summer.

June Weather in Yamaguchi: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Yamaguchi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamaguchi, June 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).
JanFebMarAprMayJunJulAugSepOctNovDec424351586672798275655545
Data source: Temperature data for Yamaguchi generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

June Precipitation in Yamaguchi

In June, Yamaguchi experiences a notable increase in precipitation, with rainfall reaching 198 mm (7.8 in) over 13 days. This surge marks the transition into the heart of the rainy season, as the region prepares for even heavier precipitation in the following month. Compared to the preceding months, June stands out for its lush greenery and vibrant landscapes, amplified by the abundant rainfall. While April and May lay the groundwork with 122 mm (4.8 in) and 136 mm (5.4 in) respectively, it's in June that the region truly blooms, leading into July's peak of 340 mm (13.4 in). This pattern highlights the dramatic shift from the milder spring to the increasingly wet summer months, making June a pivotal time for both nature and agriculture in Yamaguchi.

June Precipitation Trends in Yamaguchi

The chart displays monthly precipitation patterns in Yamaguchi, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Yamaguchi, June typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec58781301221361983402652401204167
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

June Humidity in Yamaguchi

In June, Yamaguchi, Japan experiences a noticeable spike in humidity, peaking at an impressive 88%. This increase follows a gradual rise from the cooler months, where humidity levels hovered between 69% and 76% from January to April. May acts as a precursor to the sweltering summer, with humidity climbing to 84%, setting the stage for June's moist conditions. As the city transitions into July and August, residents confront even higher humidity levels, reaching 95% and 93% respectively. This upward trend highlights the region’s humid, tropical climate during the summer months, making June a pivotal point in Yamaguchi's weather narrative.

June Average Humidity in Yamaguchi

This chart illustrates the average monthly humidity levels in Yamaguchi, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Yamaguchi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%72%69%75%84%88%95%93%84%79%76%75%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Yamaguchi

As June rolls into Yamaguchi, Japan, residents and visitors alike should be prepared for an extreme UV Index of 11, maintaining a steady level observed in the previous two months. With a burn time of just 10 minutes, this month signals the onset of summer's intense sun exposure, matching the alarming trend set in April and May. Following a gradual rise from a moderate index of 4 in January to the steep uptick from 8 in March to a peak of 11 in these early summer months, it's essential to prioritize sun protection. As the UV Index continues its ascent into July, reaching 12, the importance of cautious outdoor activity cannot be overstated. For more details on the UV Index patterns and safety recommendations, visit Yamaguchi UV Index.

Maximum UV Index Levels in Yamaguchi for June

The chart shows the monthly maximum UV Index (UVI) for Yamaguchi in June, 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 June, the maximum UV index in Yamaguchi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121210763
Data source: Yamaguchi June 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.

June Sunshine in Yamaguchi

June in Yamaguchi, Japan, brings a delightful 291 hours of sunshine, marking a peak in a month-long trend of abundant daylight. Following a progressive increase from January's modest 174 hours, the sunny days steadily rise through the spring, reaching 300 hours in May. Although June sees a slight dip compared to the previous month, it still offers ample warmth and light, paving the way for the sun-drenched experiences of summer ahead. This month serves as a beautiful transition, as July and August both surge past 280 hours, showcasing the region's vibrant summer spirit. The sun shines warmly but with the promise that as summer wanes, the hours will gradually recede, reminding us of the cyclical nature of the seasons.

Monthly Sunshine Duration in Yamaguchi: June Highlighted

The June sunshine duration represents the total number of hours Yamaguchi experiences direct sunlight during the month of June, excluding cloudy or obstructed periods. This chart compares the sunshine duration of June with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec174h229h264h280h300h291h280h303h257h256h234h211h
Data source: Yamaguchi June Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Yamaguchi During June

In June, the likelihood of sunny weather in Yamaguchi, Japan, dips to 27%, marking a noticeable trend as the month transitions into the summer season. This is a significant decline from the sunnier days of earlier months, such as April's 47% and even May's 31%. As the region gears up for the more humid and rain-prone July and August, which exhibit only 22% and 25% chances of sun respectively, June serves as a bridge between the fading spring and the arrival of intense summer weather. Consequently, while sunshine may be less certain in June, it sets the stage for the warmer, albeit cloudier, days ahead.

Percentage of Sunny Days in June in Yamaguchi

The chart illustrates the percentage of sunny days in Yamaguchi throughout the year, with June 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 Yamaguchi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec36%45%37%47%31%27%22%25%30%58%47%44%
Data source: Yamaguchi June chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Yamaguchi in June

As summer approaches in Yamaguchi, Japan, June stands out with a delightful 14 hours of daylight, marking the peak of illumination before the days gradually begin to shorten. Observing the trend, we see a steady increase in daylight from the 11 hours in March to the vibrant 13 hours in May, culminating in this extended daylight period. This surge not only enhances leisure opportunities but also uplifts the spirits of residents, encouraging outdoor activities and a deeper connection with nature. Following June, daylight remains generous through July, before tapering off slightly in August. This delightful month of June epitomizes the beauty of Yamaguchi's long summer days, making it an ideal time to bask in the sun’s warm embrace.

Average Daylight Hours in Yamaguchi for June

The chart illustrates the variation in daylight duration in Yamaguchi throughout the year, with June highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 8m10h 56m11h 58m13h 2m13h 56m14h 22m14h 9m13h 22m12h 21m11h 18m10h 22m9h 54m
Data source: Yamaguchi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

June Winds in Yamaguchi

In Yamaguchi, Japan, the June winds greet the early summer with a gentle breath, averaging 2.6 m/s (6 mph). This marked a dip from the mild breezes of May, which saw speeds of 2.9 m/s (7 mph), continuing a trend of decreasing wind activity as spring transitions to summer. Observing the pattern across the months, it’s apparent that the wind intensity begins to soften as the year progresses, with July witnessing the calmest conditions at 2.2 m/s (5 mph). Such tranquil winds not only make June a pleasant time for outdoor activities but also set the stage for the stillness that characterizes the height of summer in Yamaguchi.

Average June Wind Speed in Yamaguchi

The chart displays monthly wind speed patterns in Yamaguchi, with values for each month shown alongside June's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how June's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.23.53.13.22.92.6 m/s2.22.72.62.42.93.3
Data source: Yamaguchi June wind data, generated using information from the Copernicus Climate Change Service.

How June Weather in Yamaguchi Compares to Other Months

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

June and January present starkly contrasting weather conditions in Yamaguchi. In June, temperatures range from a mild 12°C (54°F) to a warm 31°C (89°F), with an average of 22°C (73°F). This month also experiences high humidity at 88% and considerable rainfall, totaling 198 mm (7.8 in) over 13 days. In contrast, January is much cooler, with temperatures dipping as low as -4°C (25°F) and only rising to a maximum of 16°C (60°F), averaging around 5°C (42°F). Precipitation is significantly lower at 58 mm (2.3 in) over 9 days, and humidity sits at a more moderate 76%. For a detailed look at January weather, visit Yamaguchi weather in January.

June and February present stark contrasts in weather patterns. June boasts warmer temperatures, with a minimum of 12°C (54°F) and an average high of 31°C (89°F), compared to February’s chilly minimum of -3°C (27°F) and average high of 22°C (71°F). Additionally, June experiences significantly more precipitation, averaging 198 mm (7.8 in) over 13 days, whereas February sees only 78 mm (3.1 in) across 9 days. Humidity levels are also higher in June at 88%, compared to February's 72%. For more detailed insights into February weather, you can check Yamaguchi weather in February.

June and March exhibit quite contrasting weather patterns. In June, temperatures range from a mild minimum of 12°C (54°F) to a warm maximum of 31°C (89°F), averaging around 22°C (73°F). This month is also characterized by high humidity at 88% and significant rainfall, with 198 mm (7.8 in) of precipitation occurring over 13 days. In contrast, March experiences cooler temperatures, with a daily range from a minimum of -1°C (31°F) to a maximum of 22°C (72°F), averaging just 10°C (51°F). Precipitation is lighter in March, totaling 130 mm (5.1 in) over 12 days, and the humidity level is more moderate at 69%. For more detailed insights, you can visit Yamaguchi weather in March.

When comparing the weather in June to that of April, significant differences emerge. June typically features warmer temperatures, with a minimum of 12°C (54°F) and a comfortable average of 22°C (73°F), peaking at a high of 31°C (89°F). In contrast, April starts off much cooler, with a minimum of just 1°C (34°F) and an average of 14°C (58°F), rising to a maximum of 26°C (79°F). Precipitation is more frequent in June, with 198 mm (7.8 in) falling over 13 days compared to April's 122 mm (4.8 in) over 10 days. Furthermore, June's humidity is notably higher at 88%, compared to April's 75%. For more specific insights on April's weather conditions, you can refer to the detailed information available at Yamaguchi weather in April.

June typically brings warmer temperatures compared to May, with an average temperature rise from 19°C (67°F) to 22°C (73°F) and a maximum of 31°C (89°F). The month of June also experiences increased rainfall, with precipitation levels reaching 198 mm (7.8 in) over 13 days, compared to May's 136 mm (5.4 in) over 11 days. Additionally, June has slightly higher humidity at 88%, compared to May's 84%, making it feel more humid and warm. For more detailed information, you can check Yamaguchi weather in May.

June and July showcase distinct differences in weather patterns. In June, temperatures range from a minimum of 12°C (54°F) to a maximum of 31°C (89°F), with an average of 22°C (73°F). The month experiences considerable rainfall, with 198 mm (7.8 in) spread over 13 days and humidity levels around 88%. In contrast, July significantly warms up, featuring temperatures from a minimum of 17°C (63°F) to a soaring maximum of 37°C (99°F), averaging 26°C (80°F). This month also brings increased precipitation, totaling 340 mm (13.4 in) over 20 days, while humidity rises to 95%. For more details on July weather, check out Yamaguchi weather in July.

In June, the weather generally features milder temperatures, with averages around 22°C (73°F) and highs reaching 31°C (89°F). However, the month is characterized by significant rainfall, with 198 mm (7.8 in) falling over 13 days, resulting in high humidity levels of 88%. In contrast, August experiences warmer temperatures, boasting an average of 28°C (83°F) and reaching maximums of 38°C (100°F). This month is wetter still, with precipitation totaling 265 mm (10.4 in) across 15 days and humidity peaking at 93%. For more insights on August weather in Yamaguchi, you can check Yamaguchi weather in August.

June typically features a milder climate with average temperatures ranging from 12°C (54°F) to a maximum of 31°C (89°F), while September offers slightly warmer weather with temperatures fluctuating between 13°C (56°F) and 35°C (95°F). Both months experience significant rainfall, but September records a higher total precipitation of 240 mm (9.4 in) over 14 days compared to June's 198 mm (7.8 in) over 13 days. Additionally, humidity levels in June are higher at 88%, while September sees a decrease to 84%. For more detailed information, you can check the Yamaguchi weather in September.

June and October present contrasting weather experiences. In June, temperatures range from a minimum of 12°C (54°F) to a maximum of 31°C (89°F), with an average of 22°C (73°F). However, this month is characterized by significant precipitation, receiving about 198 mm (7.8 in) over 13 days and high humidity levels at 88%. In contrast, October offers slightly cooler temperatures, with a minimum of 8°C (46°F), an average of 19°C (66°F), and a maximum of 30°C (87°F). Precipitation is also lower, totaling 120 mm (4.7 in) over 10 days, accompanied by a drop in humidity to 79%. For those interested in more detailed insights, you can refer to Yamaguchi weather in October.

June and November present stark contrasts in weather. In June, temperatures are warmer, with a minimum of 12°C (54°F) and an average of 22°C (73°F), reaching up to 31°C (89°F). This month also sees significant rainfall, totaling 198 mm (7.8 in) over 13 days, coupled with high humidity at 88%. In contrast, November brings cooler temperatures, ranging from a minimum of 0°C (32°F) to a comfortable average of 13°C (55°F) and a maximum of 25°C (78°F). Precipitation is much lower at 41 mm (1.6 in) over just 5 days, and humidity begins to decrease to 76%. For more detailed insights into November's weather, you can visit Yamaguchi weather in November.

In June, the weather is typically warm, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 31°C (89°F) and an average of 22°C (73°F). The month sees significant precipitation, totaling 198 mm (7.8 in) over about 13 days, accompanied by high humidity levels at 88%. In contrast, December experiences much cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 21°C (70°F); the average temperature sits at 7°C (46°F). With only 67 mm (2.6 in) of precipitation across 8 days, the humidity is lower at 75%. For more detailed information about December weather, you can check out Yamaguchi weather in December.

Compare Yamaguchi's Climate with Cities Worldwide

Conclusion: What to Expect From June Weather in Yamaguchi

As June rolls in, Yamaguchi transforms into a vibrant tapestry of summer weather, marked by higher temperatures and notable humidity levels compared to the preceding months. Daily highs reach a warm 31°C, while evenings remain pleasantly mild. However, the season also ushers in an increased chance of rain, with precipitation affecting nearly half the month. This unique blend of warmth and moisture creates a lush landscape, setting June apart as a time of dynamic weather patterns. For a deeper dive into what to expect throughout the year, explore the full details at Yamaguchi Climate.