August Weather in Kawagoe, Japan

Last updated: August 21, 2025

In Kawagoe, Japan, August brings a blend of high temperatures and significant humidity, creating a dynamic summer climate. With maximums reaching an impressive 37°C (99°F) and an average of 28°C (83°F), residents and visitors alike should prepare for warm days, while nights cool down to a comfortable 17°C (63°F). This month also witnesses substantial rainfall, totaling 119 mm (4.7 in) over 13 days, maintaining a high humidity level of 90%. Whether you're exploring historical sites or enjoying local festivals, August's weather in Kawagoe invites both adventure and respite from the heat.

August Temperature in Kawagoe

In August, Kawagoe, Japan experiences its warmest temperatures of the year, with lows of 17°C (63°F) and averages soaring to 28°C (83°F). The peak heat reaches a sweltering 37°C (99°F), creating a vibrant atmosphere perfect for summer festivals and outdoor activities. This trend of rising temperatures is notable, as it follows a steady increase from the cooler months. With the heat of August, residents and visitors alike embrace the lively surroundings, transforming Kawagoe into a hub of energy and colorful experiences. As summer transitions to autumn, the warmth gradually gives way to milder conditions, highlighting the seasonal ebb and flow that characterizes this charming Japanese city.

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

The chart illustrates August temperature patterns in Kawagoe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kawagoe, 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).
JanFebMarAprMayJunJulAugSepOctNovDec404350586773798375655545
Data source: Temperature data for Kawagoe 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 Kawagoe

In Kawagoe, Japan, August marks a notable transition in the summer rainfall pattern, with an average precipitation of 119 mm (4.7 in) spread over 13 days. This amount reflects a decrease from the July peak of 240 mm (9.5 in), signifying a shift as the region moves from the intense summer monsoon season. Despite this reduction, August remains a month of considerable moisture, contributing to the cumulative annual total that sees a steady rise towards autumn. As the warm, humid air gives way to cooler temperatures in September, the precipitation trend begins to climb again, hinting at the wet season's approaching climax in October. This dynamic fluctuation in rainfall illustrates the rich tapestry of Kawagoe's climate, offering both lush greenery and the rhythmic pulse of seasonal changes.

August Precipitation Trends in Kawagoe

The chart displays monthly precipitation patterns in Kawagoe, 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 Kawagoe, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec41401201101101492401191852585442
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Kawagoe

In Kawagoe, Japan, the humidity exhibits a distinct trend throughout the year, peaking during the summer months. August stands out with a humidity level of 90%, making it one of the most humid times of the year, following closely behind July's peak at 93%. This high humidity can be attributed to the warm weather and frequent rainfall characteristic of the season. Prior to August, June and July already showcase a notable increase in moisture levels, which gradually rise from 74% in April to a steamy 88% in June. As summer transitions into autumn, humidity begins to dip, with September showing a decrease to 86%, yet still reflecting the lingering warmth of the departing summer. Overall, the humidity levels in Kawagoe reveal a summer peak, underscoring the city's subtropical climate and its impact on daily life.

August Average Humidity in Kawagoe

This chart illustrates the average monthly humidity levels in Kawagoe, 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 Kawagoe is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%70%74%82%88%93%90%86%83%80%78%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Kawagoe

In August, Kawagoe experiences a UV Index of 10, categorizing it as very high exposure, with a burn time of just 15 minutes. This month typically follows a trend evident throughout the summer, where UV levels peak, reaching their highest in July with an Index of 11. While August sees a slight drop from July's extreme levels, the need for sun protection remains crucial as the very high index continues. This pattern of elevated UV exposure underscores the importance of vigilance when spending time outdoors during the summer months. Visitors and residents alike should stay informed about their UV exposure by checking detailed forecasts at Kawagoe UV Index.

Maximum UV Index Levels in Kawagoe for August

The chart shows the monthly maximum UV Index (UVI) for Kawagoe 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 Kawagoe typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101011109753
Data source: Kawagoe 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 Kawagoe

In Kawagoe, Japan, August stands out as a sun-drenched month, boasting an impressive 281 hours of sunshine. This peak is a remarkable highlight in the annual cycle, following steady growth from the earlier months; the year starts with a modest 193 hours in January, gradually climbing to a high in August. The trend reveals a consistent pattern of increasing sunlight as spring unfolds into summer, with May and June also enjoying substantial hours of sunshine at 283 and 263 hours respectively. Following August, sunshine hours begin to taper off in September, descending to 234 hours, hinting at the transition into autumn. This pattern underscores the allure of warm summer days in Kawagoe, making August a truly radiant time of year.

Monthly Sunshine Duration in Kawagoe: August Highlighted

The August sunshine duration represents the total number of hours Kawagoe 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.
JanFebMarAprMayJunJulAugSepOctNovDec193h240h264h278h283h263h232h281h234h206h235h234h
Data source: Kawagoe August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kawagoe During August

In Kawagoe, Japan, August typically presents a 32% chance of sunny weather, which reflects a noticeable trend of decreasing sunshine as summer progresses. Following a peak in February, where the likelihood of sun is at 72%, the chances diminish significantly leading into the warmer months. While January and October fare better with 56% and 50% likelihoods, respectively, August's modest percentage suggests that residents and visitors may want to prepare for more unpredictable weather patterns as late summer sets in. Despite this, the sunshine opportunity still flickers, inviting those who brave the heat to enjoy the unique charms of Kawagoe in summer.

Percentage of Sunny Days in August in Kawagoe

The chart illustrates the percentage of sunny days in Kawagoe 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 Kawagoe experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec57%73%43%50%25%22%27%32%26%50%62%69%
Data source: Kawagoe August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kawagoe in August

In Kawagoe, Japan, the rhythm of daylight dances through the months, peaking in the heart of summer. August brings with it 13 hours of daylight, a slight dip from July's elongated glow of 14 hours but still basking in plenty of light for summer activities. The trend reveals a gradual increase in daylight from January's modest 9 hours to May's vibrant 14 hours, before gently tapering into the autumn months. After August, daylight begins its descent, culminating in a reflective 12 hours in September and further dwindling to 10 hours by November. This cyclical pattern not only highlights the beauty of the changing seasons but also encourages residents and visitors alike to fully embrace the sunny splendor of late summer days in Kawagoe.

Average Daylight Hours in Kawagoe for August

The chart illustrates the variation in daylight duration in Kawagoe throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 59m10h 51m11h 57m13h 6m14h 4m14h 33m14h 18m13h 28m12h 22m11h 14m10h 15m9h 44m
Data source: Kawagoe daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Kawagoe

In Kawagoe, Japan, the breezes of August reveal a gentle ease, with an average wind speed of 2.5 m/s (6 mph), closely aligning with the winter months of January and December, which also experience similar conditions. From a seasonal perspective, the wind in August is reminiscent of the spring months, maintaining a consistent pace compared to April and May. Interestingly, the summer heat seems to temper the winds, as the lowest figures are recorded in July at 1.8 m/s (4 mph), before the air picks up again in August. Overall, the month stands out not just for its warmth, but for its winds that carry the whispers of change, bridging the vibrant energy of summer with the calm that autumn brings.

Average August Wind Speed in Kawagoe

The chart displays monthly wind speed patterns in Kawagoe, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.53.23.22.92.82.31.82.5 m/s2.12.42.12.7
Data source: Kawagoe August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Kawagoe Compares to Other Months

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

August and January present strikingly contrasting weather patterns. In August, the temperature ranges widely from a minimum of 17°C (63°F) to a scorching maximum of 37°C (99°F), with an average of 28°C (83°F). The month is characterized by high humidity at 90% and considerable precipitation of 119 mm (4.7 in) over about 13 days. In stark contrast, January experiences much cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 18°C (65°F), averaging only 5°C (40°F). This winter month sees significantly less precipitation at 41 mm (1.6 in) over just 4 days and lower humidity, recorded at 76%. For a detailed look at the weather in Kawagoe during January, visit Kawagoe weather in January.

August and February weather reveal striking contrasts. In August, temperatures soar with a minimum of 17°C (63°F), averaging 28°C (83°F), and peaking at a hot 37°C (99°F). The high humidity at 90% and significant rainfall of 119 mm (4.7 in) over 13 days create a sultry atmosphere.

In stark contrast, February experiences much cooler temperatures, with a minimum of -5°C (24°F), an average of 6°C (43°F), and a maximum of 21°C (71°F). Precipitation drops to 40 mm (1.6 in) over just 6 days, accompanied by lower humidity levels at 74%. For a closer look at February conditions, visit Kawagoe weather in February.

When comparing the weather in August and March, there's a stark contrast in temperature and humidity levels. August boasts a much warmer climate, with minimum temperatures around 17°C (63°F) and average highs reaching up to 37°C (99°F). In contrast, March offers a chillier atmosphere, with temperatures ranging from a frigid -3°C (26°F) to a comfortable maximum of 25°C (78°F). While both months experience similar precipitation levels—around 120 mm (4.7 in)—August has a higher humidity at 90%, making it feel oppressively muggy, whereas March's humidity sits at a milder 70%. For those interested in more detailed insights, you can check out Kawagoe weather in March.

August and April present contrasting weather patterns, highlighting the transition from summer to spring. In August, temperatures soar with a minimum of 17°C (63°F) and an average of 28°C (83°F), peaking at a sweltering 37°C (99°F). This month also experiences high humidity at 90% and significant rainfall of 119 mm (4.7 in) over 13 days. In comparison, April offers much cooler weather with temperatures ranging from a minimum of 1°C (33°F) to a pleasant average of 14°C (58°F), reaching a maximum of 29°C (84°F). Precipitation in April is slightly lower at 110 mm (4.3 in) over 10 days, accompanied by a more comfortable humidity level of 74%. For more insights into April's weather, visit Kawagoe weather in April.

August and May present quite a contrast in weather conditions. In August, temperatures soar with a minimum of 17°C (63°F), an average of 28°C (83°F), and highs reaching 37°C (99°F), making it the hottest month. The humidity is also significantly higher at 90%, contributing to a sultry atmosphere. Additionally, August sees about 119 mm (4.7 in) of precipitation over 13 days.

In comparison, May offers a much milder climate, with minimum temperatures of 6°C (42°F) and an average of 20°C (68°F). The maximum temperature peaks at a comfortable 33°C (92°F), and the humidity is lower at 81%. Although May has slightly less rainfall, totaling 110 mm (4.3 in) over 12 days, it feels more pleasant overall.

For more insights into the weather conditions during May, you can refer to Kawagoe weather in May.

When comparing the weather in August and June, it's evident that August tends to be warmer and more humid. August has a minimum temperature of 17°C (63°F) and an average of 28°C (83°F), peaking at 37°C (99°F). In contrast, June has cooler temperatures, with a minimum of 13°C (56°F), an average of 23°C (73°F), and a maximum of 34°C (93°F). Although August receives less precipitation at 119 mm (4.7 in) over 13 days compared to June's 149 mm (5.9 in) over 15 days, the humidity soars to an average of 90% in August, slightly higher than June's 88%. For more detailed information, you can check out Kawagoe weather in June.

In comparing the weather of July and August, August tends to be slightly warmer with an average temperature of 28°C (83°F) compared to July's average of 26°C (80°F). However, July experiences higher peak temperatures, reaching up to 39°C (103°F), while August maxes out at 37°C (99°F). Precipitation levels are notably higher in July, with 240 mm (9.5 in) over 19 days, compared to 119 mm (4.7 in) across 13 days in August. Humidity remains similar between the two months, with July at 93% and August at 90%. For more specific details on July's weather patterns, you can refer to Kawagoe weather in July.

August and September present a noticeable shift in weather patterns. In August, temperatures range from a minimum of 17°C (63°F) to a scorching maximum of 37°C (99°F), with an average temperature of 28°C (83°F). The month experiences significant rainfall, totaling 119 mm (4.7 in) over 13 days and high humidity at 90%. In contrast, September sees slightly cooler temperatures with a minimum of 13°C (55°F) and an average of 24°C (75°F), while still reaching a high of 36°C (97°F). Rainfall increases to 185 mm (7.3 in) over 18 days, and humidity remains relatively high at 86%. For more details, you can check Kawagoe weather in September.

In comparing the weather between August and October, a notable shift occurs as temperatures drop significantly. August features a warm climate with an average temperature of 28°C (83°F), peaking at a sweltering 37°C (99°F), alongside high humidity levels around 90%. In contrast, October experiences cooler temperatures, with an average of 18°C (65°F) and a maximum of 31°C (88°F), creating a more comfortable atmosphere. However, October also sees increased precipitation, totaling 258 mm (10.2 in) over 15 days, compared to August's 119 mm (4.7 in) spread across 13 days. Humidity also decreases slightly to 83%. For a detailed look at October weather, you can check Kawagoe weather in October.

August and November present a striking contrast in weather conditions. In August, temperatures soar with a minimum of 17°C (63°F) and an average high of 28°C (83°F), peaking at a scorching 37°C (99°F). The month also experiences high humidity at 90% and considerable rainfall, with 119 mm (4.7 in) spread over 13 days. In contrast, November ushers in much cooler temperatures, ranging from a low of -1°C (31°F) to an average of 13°C (55°F), with a maximum of 24°C (75°F). Precipitation is less frequent, accumulating to 54 mm (2.1 in) over just 7 days, while humidity remains relatively lower at 80%. For more details about November weather, check out Kawagoe weather in November.

August and December present a stark contrast in weather conditions. In August, temperatures can soar, with averages around 28°C (83°F) and peaks reaching up to 37°C (99°F), accompanied by high humidity levels at 90%. This month also experiences considerable rainfall, with precipitation measured at 119 mm over 13 days. In contrast, December sees a significant drop in temperatures, where the average is a chilly 7°C (45°F), and nighttime lows plummet to -3°C (26°F). The month has much less rainfall, totaling only 42 mm across 5 days, and slightly lower humidity at 78%. For more detailed information about December weather, you can check Kawagoe weather in December.

Compare Kawagoe's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Kawagoe

August in Kawagoe is marked by hot temperatures and high humidity, creating a distinctly tropical ambiance compared to other months. With the maximum reaching a sizzling 37°C, the average temperature sits comfortably at 28°C, making it one of the hottest times of the year. While rainfall is consistent, with 119 mm accumulated over 13 days, the overall climate feels more intense due to the humidity levels soaring around 90%. This unique combination of heat and moisture distinguishes August from the milder, drier months of the year. To explore more about how Kawagoe's weather varies throughout the seasons, visit Kawagoe Climate.