August Weather in Koshimizu, Japan

Last updated: August 23, 2025

In August in Koshimizu, Japan, the average temperature hovers around 18°C (65°F), with a comfortable minimum of 10°C (51°F) and a high of 30°C (86°F). Expect some rainfall, as precipitation averages 129 mm (5.1 in) over about 13 days. With an average humidity of 96%, the air can feel quite moist—perfect for those who enjoy a lush, verdant environment!

August Temperature in Koshimizu

In August in Koshimizu, the average temperature is 18°C (65°F). The maximum can reach 30°C (86°F), and the minimum can be as low as 10°C (51°F). This makes it a great time to explore Koshimizu with comfortable weather for outdoor activities.

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

The chart illustrates August temperature patterns in Koshimizu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koshimizu, August typically has an average temperature of 18°C (65°F), with highs reaching up to 30°C (86°F) and lows dropping to around 10°C (51°F).

Data source: Temperature data for Koshimizu generated using information from the Copernicus Climate Change Service.

August Precipitation in Koshimizu

In Koshimizu in August, the precipitation amount is 129 mm (5.1 in) over the course of 13 days.

August Precipitation Trends in Koshimizu

The chart displays monthly precipitation patterns in Koshimizu, 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 Koshimizu, August typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Koshimizu

In Koshimizu in August humidity is 96%. With an average temperature of 18°C (65°F), this humidity feels like a heavy blanket that clings to your skin, making outdoor activities less enjoyable and creating an oppressive atmosphere for traveling.

August Average Humidity in Koshimizu

This chart illustrates the average monthly humidity levels in Koshimizu, 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 Koshimizu is approximately 96%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Koshimizu

In Koshimizu in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Koshimizu.

Maximum UV Index Levels in Koshimizu for August

The chart shows the monthly maximum UV Index (UVI) for Koshimizu 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 Koshimizu typically reaches 9, which falls under the very high exposure category.

Data source: Koshimizu 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 Koshimizu Compares to Other Months

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

This table compares monthly weather conditions in Koshimizu, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	54 mm (2.1 inches)	84%	low
February Weather	-8°C (19°F)	55 mm (2.2 inches)	83%	moderate
March Weather	-2°C (29°F)	88 mm (3.5 inches)	83%	high
April Weather	4°C (39°F)	72 mm (2.8 inches)	83%	high
May Weather	10°C (50°F)	95 mm (3.7 inches)	86%	very high
June Weather	13°C (56°F)	96 mm (3.8 inches)	88%	very high
July Weather	18°C (64°F)	79 mm (3.1 inches)	93%	very high
August Weather	18°C (65°F)	129 mm (5.1 inches)	96%	very high
September Weather	16°C (61°F)	95 mm (3.7 inches)	89%	very high
October Weather	11°C (51°F)	159 mm (6.2 inches)	83%	moderate
November Weather	4°C (40°F)	96 mm (3.8 inches)	80%	moderate
December Weather	-3°C (27°F)	70 mm (2.8 inches)	79%	low