August Weather in Izumo, Japan

Last updated: August 21, 2025

In August, Izumo, Japan experiences warm and humid weather characterized by a maximum temperature reaching up to 36°C (96°F), while the average hovers around 28°C (82°F). The minimum temperature can drop to a comfortable 19°C (67°F), providing some relief from the heat. However, visitors should be prepared for the significant rainfall typical of this month, with a total precipitation of 252 mm (9.9 in) over approximately 14 days. With humidity levels soaring to 92%, the weather can feel quite muggy, making it essential to stay hydrated and seek shade during the hottest parts of the day.

August Temperature in Izumo

In August, Izumo, Japan, experiences the height of summer warmth, with minimum temperatures hovering around a comfortable 19°C (67°F). The days become truly balmy, showcasing an average temperature of 28°C (82°F) and peaking at a steamy 36°C (96°F). This trend of rising temperatures is evident as the city transitions from the mildness of early summer, with July’s averages reaching 26°C (79°F). The warmth of August creates a vibrant atmosphere, inviting both locals and tourists to indulge in seasonal festivities and outdoor activities. As Izumo basks in the sun, it embodies the lively spirit of summer, marking a striking contrast to the frosty chill of winter months, where temperatures can plummet to -4°C (24°F) in January.

August Weather in Izumo: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Izumo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Izumo, August 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).
JanFebMarAprMayJunJulAugSepOctNovDec414248556571798274645545
Data source: Temperature data for Izumo 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.

August Precipitation in Izumo

In August, Izumo, Japan experiences a significant precipitation increase, with 252 mm (9.9 in) of rainfall, maintaining the area's trend of peak wetness during the summer months. This rainfall, occurring over 14 days, continues a pattern established in July, where a substantial 290 mm (11.4 in) fell, making it the wettest month of the year. While August’s precipitation is slightly lower than July's, it still reflects the high humidity and frequent rain characteristic of the season. As summer transitions into fall, Izumo sees a decline in rainfall, which drops to 226 mm (8.9 in) in September, marking a gradual return to drier conditions. Overall, this data underscores a marked seasonal variation in Izumo's climate, with late summer serving as the zenith of rainfall before a downward trend in the subsequent months.

August Precipitation Trends in Izumo

The chart displays monthly precipitation patterns in Izumo, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Izumo, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec84891251149717329125222615053105
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Izumo

August in Izumo, Japan, sees humidity levels peaking at an impressive 92%, consistent with the sweltering conditions of July, which also recorded the same moisture-laden air. As summer reaches its zenith, the high humidity contributes to a muggy atmosphere that can be quite stifling. This is a continuation of a noticeable trend; from the dryness of winter months, where humidity hovers around 82% in January, levels gradually rise through spring and reach their summer peak. The gradual ascent from 73% in March to 86% in June highlights the region’s transition into the humid months, making August's sticky conditions a hallmark of Izumo's summer climate. As September approaches, humidity slightly dips to 87%, hinting at a shift towards a more temperate fall, yet the legacy of summer's heat remains palpable.

August Average Humidity in Izumo

This chart illustrates the average monthly humidity levels in Izumo, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Izumo is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%73%74%84%86%92%92%87%85%84%82%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Izumo

In August, Izumo, Japan experiences a UV Index of 12, indicating an extreme risk of harm from unprotected sun exposure, with a burn time of just 10 minutes. This peak in UV intensity follows a trend seen since April, when the index first reached extreme levels, hovering between 11 and 12 throughout the summer months of May and July. As the season progresses, both June and July maintain this heightened UV exposure, a significant contrast from the more moderate levels seen during the winter months. This trend emphasizes the importance of sun protection during the summer, making it crucial for residents and visitors alike to stay informed about the UV Index, especially in August. For more details, check out Izumo UV Index.

Maximum UV Index Levels in Izumo for August

The chart shows the monthly maximum UV Index (UVI) for Izumo in August, 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 August, the maximum UV index in Izumo typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121210753
Data source: Izumo August 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.

August Sunshine in Izumo

In Izumo, Japan, August shines as the highlight of summer, boasting an impressive 304 hours of sunshine, the peak of the year. This vibrant month follows a steady ascent from the low of 164 hours in January, gradually climbing through the spring until it reaches full bloom in August. As summer advances, the sun's embrace becomes more generous, with June and July providing substantial sunlight at 294 and 280 hours, respectively. However, August's brilliance stands out, offering a sun-drenched paradise before the gradual decline begins in September, where hours drop to 253. This pattern highlights a clear trend of increasing daylight leading to the height of summer, followed by a gentle tapering off as the year transitions into fall.

Monthly Sunshine Duration in Izumo: August Highlighted

The August sunshine duration represents the total number of hours Izumo experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec164h212h257h279h299h294h280h304h253h243h224h191h
Data source: Izumo August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Izumo During August

In Izumo, Japan, the likelihood of sunny weather experiences notable fluctuations throughout the year, with August reflecting a 25% chance of sunshine. This month aligns with the lower end of the spectrum, comparable to the preceding months of July (also 25%) and June (26%), suggesting a transitional period prone to overcast days. Interestingly, sunny days begin to show more promise in the subsequent months, as the forecast improves significantly in October with a 49% chance. Thus, while August may not be the sun-soaked paradise some seek, the promise of brighter days looms on the horizon as summer yields to autumn.

Percentage of Sunny Days in August in Izumo

The chart illustrates the percentage of sunny days in Izumo throughout the year, with August 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 Izumo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec30%41%35%44%31%26%25%25%32%49%44%37%
Data source: Izumo August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Izumo in August

In Izumo, Japan, the daylight duration experiences a notable rhythm throughout the year, with August offering a generous 13 hours of sunlight. This month marks a gradual transition from the peak of summer in July, where daylight reaches its maximum, also at 14 hours. As the year progresses, daylight begins to decline, with September seeing a slight reduction to 12 hours, setting the stage for the shorter days of autumn. April and May usher in longer nights, as daylight climbs from 11 hours in March to 14 hours in May, creating an inviting ambiance for outdoor activities. As the seasons shift, notably during the summer months, residents of Izumo relish the warmth of extended daylight, while also preparing for the cozy, shorter days of winter ahead.

Average Daylight Hours in Izumo for August

The chart illustrates the variation in daylight duration in Izumo throughout the year, with August 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 48m
Data source: Izumo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Izumo

In Izumo, Japan, the August winds are a gentle breath at an average speed of 3.0 m/s (7 mph), marking a noticeable calm compared to the blustery peak months of January and February, which see speeds around 4.3 to 4.5 m/s (10 mph). As summer unfolds, wind speeds gradually dip from June’s lull of 2.4 m/s (5 mph) to a modest 3.0 m/s in August, creating a serene atmosphere ideal for gazing at the coastal vistas. Following August, wind speeds stabilize, but they never quite regain the vigor of winter's winds, illustrating a seasonal ebb and flow that defines Izumo's tranquil summer months. The transition into autumn brings back a slightly brisker breeze in September, suggesting a gentle shift towards the cooler months ahead.

Average August Wind Speed in Izumo

The chart displays monthly wind speed patterns in Izumo, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.53.73.63.62.42.63.0 m/s3.02.93.74.4
Data source: Izumo August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Izumo Compares to Other Months

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

August and January present contrasting weather conditions, showcasing the extremes of seasonal change. In August, temperatures soar, with a minimum of 19°C (67°F) and an average of 28°C (82°F), peaking at a sizzling 36°C (96°F). This month also sees substantial rainfall, totaling 252 mm (9.9 in) over approximately 14 days, accompanied by high humidity levels at 92%. In stark contrast, January experiences a significant drop in temperature, with lows plunging to -4°C (24°F) and an average of 5°C (42°F), reaching a maximum of just 15°C (59°F). Precipitation in January is considerably lower, at 84 mm (3.3 in) over the same number of rainy days, and humidity remains relatively comfortable at 82%. For further details on January weather, you can visit Izumo weather in January.

August and February present stark contrasts in weather. August boasts warm temperatures, with averages around 28°C (82°F) and peaks reaching as high as 36°C (96°F), accompanied by high humidity levels of 92%. It's also a month marked by significant rainfall, receiving approximately 252 mm (9.9 in) over 14 days. In contrast, February brings a much chillier climate, with average temperatures of just 6°C (42°F) and lows dropping to -8°C (19°F). The precipitation is considerably less, at 89 mm (3.5 in), though it still occurs over 14 days, and the humidity is slightly lower at 79%. For those interested in the weather specifics of this winter month, details can be found at Izumo weather in February.

August and March showcase stark contrasts in weather conditions. In August, temperatures soar with a minimum of 19°C (67°F) and an average high reaching 36°C (96°F), accompanied by high humidity at 92%. This month also experiences significant rainfall, totaling 252 mm (9.9 in) over approximately 14 days. In contrast, March offers a milder climate, where temperatures range from a chilly minimum of 1°C (34°F) to a pleasant maximum of 21°C (70°F), with an average of 9°C (49°F). Precipitation is less frequent, at 125 mm (4.9 in) over 13 days, and humidity is lower at 73%. For more details on March weather, you can visit Izumo weather in March.

In comparing the weather of August and April, we can see a stark contrast. August boasts much warmer temperatures, with minimums of 19°C (67°F) and maximums reaching up to 36°C (96°F), making it the height of summer with an average of 28°C (82°F). In comparison, April experiences cooler temperatures, starting from a minimum of 2°C (35°F) and peaking at 24°C (75°F), averaging only 13°C (56°F). Additionally, August sees higher precipitation, with 252 mm (9.9 in) falling over 14 days, while April has less rainfall at 113 mm (4.5 in) across 10 days. The humidity is also noticeably higher in August at 92%, compared to April's 74%. For more details on April weather, you can visit Izumo weather in April.

August and May exhibit significantly different weather patterns. In August, temperatures range from a minimum of 19°C (67°F) to a sizzling maximum of 36°C (96°F), with an average temperature of 28°C (82°F). The month is characterized by high humidity at 92% and considerable rainfall, accumulating 252 mm (9.9 in) over 14 days. In contrast, May features much cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 27°C (82°F), averaging 18°C (65°F). The humidity is lower at 84%, and precipitation is considerably less, totaling 97 mm (3.8 in) over just 8 days. For more specific details about May weather in Izumo, you can visit Izumo weather in May.

August weather is notably warmer and more humid than June, with average temperatures soaring to around 28°C (82°F) and daily highs reaching up to 36°C (96°F). In contrast, June experiences cooler temperatures, averaging 22°C (71°F) with a maximum of 32°C (90°F). Additionally, August is characterized by significantly higher precipitation levels, totaling 252 mm (9.9 in) over about 14 days, compared to June's 173 mm (6.8 in) over 13 days. The humidity in August is quite high at 92%, slightly more than June's 86%. For more detailed insights, you can visit Izumo weather in June.

In comparing the weather patterns of August and July, it's evident that August tends to be slightly warmer with an average temperature of 28°C (82°F), compared to July's 26°C (79°F). While both months have a minimum temperature of 19°C (67°F), August also features a higher maximum temperature of 36°C (96°F) versus July’s 35°C (94°F). Precipitation levels are noteworthy as well; August receives 252 mm (9.9 in) of rain over 14 days, while July sees more rainfall at 290 mm (11.4 in) spread over 18 days. Despite these variations in temperature and precipitation, both months maintain a high humidity level of 92%. For more detailed insights into July's weather, refer to Izumo weather in July.

In August, the weather is characterized by higher temperatures, with average highs reaching 36°C (96°F) and a humid atmosphere, registering 92% humidity. The month sees substantial rainfall, totaling 252 mm (9.9 in) over approximately 14 days, making it feel even warmer. In contrast, September brings a noticeable drop in temperatures, with average highs of 34°C (93°F) and a minimum temperature of 15°C (59°F). While September still experiences significant rainfall at 226 mm (8.9 in) over 15 days, the humidity decreases slightly to 87%. For more detailed information on September weather, you can check Izumo weather in September.

In August, the weather is characterized by warm temperatures, with lows around 19°C (67°F) and highs reaching up to 36°C (96°F). The month also experiences high humidity at 92% and significant precipitation of 252 mm (9.9 in) over 14 days, making it quite a wet month. In contrast, October brings a noticeable drop in temperatures, with averages around 18°C (65°F) and max temperatures peaking at 30°C (86°F). Although it is still rainy with 150 mm (5.9 in) of precipitation expected over 12 days, humidity levels decrease slightly to 85%. For more detailed insights, you can check Izumo weather in October.

August and November present stark contrasts in weather conditions. In August, temperatures soar with a minimum of 19°C (67°F) and an average of 28°C (82°F), reaching a peak of 36°C (96°F). The month is also characterized by high humidity at 92% and significant rainfall, accumulating 252 mm (9.9 in) over 14 days. In contrast, November brings a much cooler atmosphere, with temperatures dipping to a minimum of 4°C (39°F) and an average of 13°C (55°F), peaking at a mild 24°C (76°F). Precipitation is substantially lower at 53 mm (2.1 in) across 9 days, and humidity decreases to 84%. For more insights on the weather in November, you can check Izumo weather in November.

August and December present a stark contrast in weather conditions. In August, temperatures soar with a minimum of 19°C (67°F) and can reach up to 36°C (96°F), while the humidity remains high at 92%. Rain is frequent, with 252 mm (9.9 in) of precipitation falling over 14 days. Conversely, December offers much cooler weather, with temperatures ranging from a chilly 0°C (32°F) to a mild maximum of 21°C (69°F) and an average of 7°C (46°F). Precipitation decreases significantly to 105 mm (4.1 in) over 18 days, and humidity lowers to 82%. For more detailed weather information, you can visit Izumo weather in December.

Compare Izumo's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Izumo

As August rolls in, Izumo transforms into a sweltering oasis with its warm temperatures and high humidity levels. With a striking average of 28°C and peaks reaching up to 36°C, the month stands out from the cooler confines of spring and early summer. While rain graces the region with about 252 mm over roughly half the month, the blend of high humidity and warmth sets a vibrant, tropical tone, distinguishing August as a month of intense heat and moisture. For a deeper dive into Izumo's weather patterns and how they shape the local climate throughout the year, visit Izumo Climate.