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August Weather in Koga, Japan

Last updated: August 23, 2025

In August, the average temperature in Koga, Japan reaches a warm 27°C (82°F). Expect temperatures to range from a cool 16°C (61°F) to a sweltering 37°C (98°F). During this month, precipitation is notable, with an average of 156 mm (6.1 in) spread over 17 days, contributing to an average humidity of 92%. Embrace the tropical vibes!

August Temperature in Koga

In August in Koga, the average temperature is 27°C (82°F). The maximum can reach 37°C (98°F) and the minimum can be as low as 16°C (61°F). This makes it an ideal time for travelers seeking warm weather while still enjoying cooler evenings.

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

The chart illustrates August temperature patterns in Koga, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koga, August typically has an average temperature of 27°C (82°F), with highs reaching up to 37°C (98°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec394149566672788173645343
Data source: Temperature data for Koga 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 Koga

In Koga in August, the precipitation amount is 156 mm (6.1 in), occurring over a span of 17 days.

August Precipitation Trends in Koga

The chart displays monthly precipitation patterns in Koga, 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 Koga, August typically receives around 156 mm (6.1 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec38411311291371602581561952586750
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Koga

In Koga in August humidity is 92%. With an average temperature of 27°C (82°F), this humidity feels like a thick, heavy blanket enveloping you, making traveling quite uncomfortable as sweat clings to your skin and every step feels laborious.

August Average Humidity in Koga

This chart illustrates the average monthly humidity levels in Koga, 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 Koga is approximately 92%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Koga

In Koga in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Koga.

Maximum UV Index Levels in Koga for August

The chart shows the monthly maximum UV Index (UVI) for Koga 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 Koga typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109653
Data source: Koga 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.

How August Weather in Koga Compares to Other Months

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

This table compares monthly weather conditions in Koga, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)38 mm (1.5 inches)88%moderate
February Weather5°C (41°F)41 mm (1.6 inches)86%moderate
March Weather9°C (49°F)131 mm (5.2 inches)81%high
April Weather14°C (57°F)129 mm (5.1 inches)78%very high
May Weather19°C (66°F)137 mm (5.4 inches)81%very high
June Weather22°C (72°F)160 mm (6.3 inches)88%extreme
July Weather26°C (78°F)258 mm (10.2 inches)92%extreme
August Weather27°C (82°F)156 mm (6.1 inches)92%very high
September Weather23°C (74°F)195 mm (7.7 inches)89%very high
October Weather18°C (64°F)258 mm (10.1 inches)87%high
November Weather12°C (53°F)67 mm (2.6 inches)85%moderate
December Weather6°C (43°F)50 mm (2.0 inches)86%moderate

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