August Weather in Katsuura, Japan

Last updated: August 21, 2025

In Katsuura, Japan, August brings warm and humid weather, with maximum temperatures reaching up to 34°C (94°F) and an average of 28°C (82°F). The month is characterized by a significant average minimum temperature of 21°C (70°F), creating a comfortable yet sultry atmosphere. Rainfall is prevalent, with a total precipitation of 121 mm (4.7 in) spread across 15 days, contributing to a high humidity level of 87%. This combination of heat and moisture gives August its vibrant summer essence, making it a dynamic time for both locals and visitors.

August Temperature in Katsuura

In August, Katsuura, Japan, basks in the peak of summer warmth, with temperatures reaching a minimum of 21°C (70°F) and soaring to a maximum of 34°C (94°F). The average temperature settles comfortably at 28°C (82°F), creating a lively atmosphere perfect for beach outings and outdoor festivities. This month marks a significant shift from the cooler temperatures of early spring, as residents and visitors alike embrace the heat and vibrant energy that comes with summer. With such high temperatures, humidity often accompanies the heat, making it essential for everyone to stay hydrated while enjoying Katsuura's beautiful coastal scenery.

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

The chart illustrates August temperature patterns in Katsuura, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katsuura, 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).
JanFebMarAprMayJunJulAugSepOctNovDec454652596772788276676050
Data source: Temperature data for Katsuura 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 Katsuura

August in Katsuura experiences a moderate precipitation level of 121 mm (4.7 in), which contributes to the region's lush landscapes as summer begins to wane. With about 15 days of rainfall, the month showcases a slight decline from the heavy downpours seen in July, which recorded the year’s peak at 207 mm (8.2 in). Despite this reduction, August remains a humid month, hinting at the transition towards autumn. Following this pattern, September promises an uptick in precipitation, reaffirming the region's tendency for wetter conditions as the season shifts. This consistency in rainfall not only nurtures the local flora but also sets the stage for the vibrant change in foliage that characterizes Katsuura's fall months.

August Precipitation Trends in Katsuura

The chart displays monthly precipitation patterns in Katsuura, 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 Katsuura, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec655716311213518520712119627412287
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Katsuura

In August, Katsuura, Japan, experiences significant humidity, with levels reaching 87%. This reflects a slight decrease from the peak humidity of 94% seen in July, yet remains notably high, maintaining the trend of elevated moisture typical of the summer months. As the year progresses, humidity levels generally peak in the summer, starting at a more moderate 70% in January and gradually increasing, especially from May through July. Following August, humidity begins to taper off, with a drop to 83% in September, signaling the transition into the autumn months. Overall, Katsuura's humidity trend illustrates a shift from comfortable conditions at the start of the year to the muggy, tropical ambiance of summer.

August Average Humidity in Katsuura

This chart illustrates the average monthly humidity levels in Katsuura, 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 Katsuura is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%69%68%73%81%88%94%87%83%78%74%72%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Katsuura

In Katsuura, Japan, August brings an intense UV Index of 11, maintaining the extreme exposure category established in the previous months of June and July. With a rapid decline in burn time to just 10 minutes, it’s essential for residents and visitors alike to be vigilant with sun protection during this peak summer month. This trend of elevated UV levels from May through August highlights a notable pattern, suggesting a significant risk of skin damage during the hottest periods of the year. As the summer transitions into September, there’s a slight decrease to an index of 10, indicating that while danger remains, the urgency for caution slightly lifts. For more information on the month-by-month UV Index trends, visit Katsuura UV Index.

Maximum UV Index Levels in Katsuura for August

The chart shows the monthly maximum UV Index (UVI) for Katsuura 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 Katsuura typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101111111110754
Data source: Katsuura 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 Katsuura

In August, Katsuura, Japan basks in a radiant 310 hours of sunshine, marking the peak of the summer season. This substantial increase compared to the 289 hours in May and the 271 hours in July highlights a trend of growing daylight as the year progresses. As the summer sky stretches out the sun's embrace, August stands out not only for its warmth but also for its luminous days, casting a vibrant glow over the city. September brings a notable drop to 244 hours, gently transitioning towards the milder fall months. Overall, the sunshine hours depict a clear pattern, with spring and summer boasting the brightest days, ultimately inviting both locals and visitors to revel in the sun-kissed atmosphere of Katsuura during this peak sunshine month.

Monthly Sunshine Duration in Katsuura: August Highlighted

The August sunshine duration represents the total number of hours Katsuura 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.
JanFebMarAprMayJunJulAugSepOctNovDec184h218h252h271h289h267h271h310h244h211h218h217h
Data source: Katsuura August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Katsuura During August

In Katsuura, Japan, the likelihood of sunny weather sees a notable shift throughout the year, culminating in a 38% chance of sunshine in August. While this indicates a slight increase from the 36% in July, it remains one of the lower probabilities on the calendar, particularly when compared to the sunny peaks of late winter and early spring months, which hover above 50%. As summer progresses, the wet season begins to take hold, contributing to the lower sunshine rates experienced in June and July. Therefore, while August offers a glimmer of hope for sun-seekers, it is wise to anticipate a mix of both sunny and overcast days as the season transitions.

Percentage of Sunny Days in August in Katsuura

The chart illustrates the percentage of sunny days in Katsuura 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 Katsuura experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec51%62%39%49%24%22%36%39%29%45%59%64%
Data source: Katsuura August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Katsuura in August

In Katsuura, Japan, the journey through the year unveils a captivating dance of daylight. August marks a slight decline in daylight duration, offering around 13 hours of sunlit brilliance, a gentle tapering from the peak of 14 hours observed in the middle of summer. As spring transitioned to summer, daylight gradually swelled, peaking in June and July with their vibrant, extended days. However, as August unfolds, the length of daylight begins its gradual descent, foreshadowing the approaching autumn. This rhythm of daylight not only enhances the beauty of the changing seasons but also resonates with nature's cyclical elegance, making each month in Katsuura uniquely enchanting.

Average Daylight Hours in Katsuura for August

The chart illustrates the variation in daylight duration in Katsuura 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 4m14h14h 28m14h 14m13h 25m12h 22m11h 16m10h 18m9h 48m
Data source: Katsuura daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Katsuura

In Katsuura, Japan, the average wind speed in August is recorded at 4.0 m/s (9 mph), mirroring a mild breeze that often refreshes the summer heat. This month stands out as the wind picks up slightly from the languid calm of July, where speeds dipped to their lowest at 2.9 m/s (6 mph). A trend emerges as one observes the seasonal shifts; the spring months, particularly April and May, show a consistent average around 4.4-4.5 m/s (10 mph), suggesting a lively and dynamic atmosphere. As the year progresses into the autumn months, wind speeds hover around the 4.0 m/s (9 mph) mark, maintaining a steady rhythm that complements Katsuura's changing seasons. Thus, August experiences a balanced blend of summer warmth and refreshing winds, paving the way for the upcoming transitions in the fall.

Average August Wind Speed in Katsuura

The chart displays monthly wind speed patterns in Katsuura, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.84.54.14.44.53.12.94.0 m/s3.93.84.04.2
Data source: Katsuura August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Katsuura Compares to Other Months

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

August and January weather exhibit stark contrasts in temperature and humidity. In August, the average temperature reaches a warm 28°C (82°F), with highs soaring to 34°C (94°F), accompanied by high humidity levels of 87% and considerable rainfall of 121 mm (4.7 in) over 15 days. In contrast, January is much cooler, with average temperatures around 7°C (46°F) and highs peaking at 18°C (65°F). Precipitation is lower at 65 mm (2.6 in) across just 6 days, and humidity drops to 70%. For more detailed information, you can view the Katsuura weather in January.

August and February exhibit striking differences in weather patterns. August typically boasts warm temperatures, with a minimum of 21°C (70°F) and an average of 28°C (82°F), peaking at 34°C (94°F). High humidity levels at 87% and significant rainfall of 121 mm (4.7 in) over approximately 15 days contribute to a hot and sticky atmosphere. In contrast, February presents a much cooler climate, where temperatures range from a chilly minimum of 0°C (33°F) to an average of 8°C (47°F), with a maximum of 19°C (66°F). This month sees less precipitation, totaling 57 mm (2.3 in) over about 9 days, and lower humidity levels at 69%. For more detailed information, you can check out Katsuura weather in February.

When comparing the weather in August to that in March, it's clear that August is significantly warmer, with average temperatures reaching 28°C (82°F) compared to a much cooler 11°C (53°F) in March. The maximum temperature in August can soar to 34°C (94°F), while March peaks at only 21°C (69°F). August also experiences higher humidity levels of 87%, making the heat feel more intense, while March's humidity sits at a lower 68%. Despite slightly lower precipitation in August with 121 mm (4.7 in) over 15 days compared to March's 163 mm (6.4 in) over 14 days, both months are relatively rainy. For more detailed insights into the weather in March, you can visit Katsuura weather in March.

The weather in August is notably warmer and more humid compared to April. In August, temperatures range from a minimum of 21°C (70°F) to a maximum of 34°C (94°F), with an average of 28°C (82°F). In contrast, April sees much cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 23°C (74°F), averaging around 15°C (59°F). While both months experience significant rainfall, August has slightly more precipitation at 121 mm (4.7 in) over 15 days, compared to April's 112 mm (4.4 in) over 10 days. Additionally, the humidity in August is a high 87%, making it feel much muggy, while April's humidity is moderate at 73%. For more detailed insights on Katsuura weather during April, you can refer to Katsuura weather in April.

Comparing the weather in August and May reveals significant differences in temperature and humidity. In August, temperatures range from a minimum of 21°C (70°F) to a maximum of 34°C (94°F), with an average temperature of 28°C (82°F) and humidity levels peaking at 87%. Meanwhile, May experiences milder temperatures, with a minimum of 11°C (52°F), an average of 19°C (67°F), and a maximum of 28°C (82°F). Precipitation in May is slightly higher at 135 mm (5.3 in) compared to August's 121 mm (4.7 in), although rain falls on more days in August (15 days) than in May (12 days). For more details, you can check Katsuura weather in May.

When comparing the weather in August and June, August tends to be warmer with an average temperature of 28°C (82°F), while June has a cooler average of 22°C (72°F). In August, temperatures can reach a maximum of 34°C (94°F) compared to June's 29°C (85°F). However, June experiences more precipitation, with a total of 185 mm (7.3 in) over 15 days, compared to 121 mm (4.7 in) in August, which also has the same number of rainy days. Humidity levels are quite similar, with June at 88% and August slightly lower at 87%. For a closer look at June's climate patterns, you can check Katsuura weather in June.

In comparing the weather between July and August, August tends to be slightly warmer with an average temperature of 28°C (82°F), compared to July's average of 26°C (78°F). Both months experience a maximum temperature of 34°C (94°F), but August has a higher minimum temperature of 21°C (70°F) compared to July's 19°C (67°F). Precipitation in August is lower at 121 mm (4.7 in) over 15 days, while July sees more rainfall at 207 mm (8.2 in) across 17 days, resulting in higher humidity levels in July at 94% compared to August's 87%. For more detailed information on July weather specifically, visit Katsuura weather in July.

August and September weather show distinct differences in temperature and precipitation patterns. In August, temperatures range from a minimum of 21°C (70°F) to a maximum of 34°C (94°F), with an average of 28°C (82°F). The month sees considerable rainfall, totaling 121 mm (4.7 in) over 15 days, alongside high humidity levels at 87%. In contrast, September experiences cooler temperatures, with a minimum of 16°C (62°F) and an average of 24°C (76°F), peaking at 33°C (91°F). However, it has increased precipitation, totaling 196 mm (7.7 in) across 17 days, and slightly lower humidity at 83%. For more information about the weather specifics in September, check out Katsuura weather in September.

August and October present contrasting weather patterns. In August, temperatures are significantly warmer, ranging from a mild 21°C (70°F) to a hot 34°C (94°F), with an average of 28°C (82°F). The month is also characterized by high humidity at 87% and considerable precipitation, with 121 mm (4.7 in) falling over 15 days. In contrast, October sees cooler temperatures, with a minimum of 12°C (54°F) and a maximum of 28°C (83°F), averaging around 20°C (68°F). Precipitation increases in October to 274 mm (10.8 in), also over 15 days, but humidity drops to a more comfortable 78%. For more information, you can check out Katsuura weather in October.

August and November present striking contrasts in weather conditions. In August, the climate is warm and humid, with temperatures ranging from a minimum of 21°C (70°F) to a maximum of 34°C (94°F) and an average of 28°C (82°F). The month is characterized by significant precipitation, averaging 121 mm (4.7 in) over 15 days, along with high humidity levels at 87%. In contrast, November brings a cooler and drier atmosphere, with temperatures dropping to a minimum of 5°C (42°F), an average of 15°C (60°F), and a maximum of 23°C (74°F). Rainfall is similar at 122 mm (4.8 in), but occurs over fewer days, just 11 in total, alongside reduced humidity at 74%. For more specific insights about the weather in November, you can visit Katsuura weather in November.

August and December showcase sharply contrasting weather patterns. In August, temperatures soar with a minimum of 21°C (70°F) and averaging around 28°C (82°F), peaking at 34°C (94°F). This warm month is marked by high humidity at 87% and significant rainfall, totaling 121 mm (4.7 in) over 15 days. In stark contrast, December experiences cooler temperatures, with a minimum of 1°C (33°F), an average of 10°C (51°F), and a maximum of 22°C (71°F). The precipitation declines to 87 mm (3.4 in) over just 9 days, and the humidity drops to a more comfortable 72%. For more detailed insights, you can check Katsuura weather in December.

Compare Katsuura's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Katsuura

August in Katsuura stands out with its warm and humid climate, vibrant with the peak of summer. As temperatures soar, reaching maximums of 34°C, it offers a lively atmosphere for outdoor activities; however, the high humidity at 87% can make it feel even warmer. While this month experiences ample rainfall, averaging 121 mm over approximately 15 days, the sun still shines brightly, creating a unique blend of heat and moisture that is characteristic of this season. Unlike the milder weather found in other months, August invites both the thrill of summer adventures and the cooling embrace of occasional rain. For more detailed weather insights throughout the year, visit Katsuura Climate.