August Weather in Rumoi, Japan

Last updated: August 23, 2025

In Rumoi, Japan, the average temperature in August hovers around 21°C (70°F), with a minimum of 12°C (54°F) and a warm maximum reaching 31°C (88°F). Expect a fair share of rain, with 171 mm (6.7 in) of precipitation spread over 15 days. The air is notably humid, averaging a high 95% humidity, adding to the region's lush atmosphere.

August Temperature in Rumoi

In August in Rumoi, the average temperature is 21°C (70°F). Maximums can reach 31°C (88°F), while minimums can drop as low as 12°C (54°F). This pleasant climate makes it an ideal time for exploring outdoor activities and enjoying local attractions.

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

The chart illustrates August temperature patterns in Rumoi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rumoi, August typically has an average temperature of 21°C (70°F), with highs reaching up to 31°C (88°F) and lows dropping to around 12°C (54°F).

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

August Precipitation in Rumoi

In Rumoi in August, the total precipitation amount is 171 mm (6.7 in) spread over 15 days.

August Precipitation Trends in Rumoi

The chart displays monthly precipitation patterns in Rumoi, 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 Rumoi, August typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 15 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 Rumoi

In Rumoi in August, humidity is 95%. With an average temperature of 21°C (70°F), this humidity feels like a thick, warm blanket enveloping you, making every outdoor excursion sweat-inducing and your clothes cling to your skin.

August Average Humidity in Rumoi

This chart illustrates the average monthly humidity levels in Rumoi, 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 Rumoi is approximately 95%, 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 Rumoi

In Rumoi 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 Rumoi.

Maximum UV Index Levels in Rumoi for August

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

Data source: Rumoi 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 Rumoi Compares to Other Months

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

This table compares monthly weather conditions in Rumoi, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (22°F)	70 mm (2.8 inches)	84%	low
February Weather	-4°C (24°F)	84 mm (3.3 inches)	83%	moderate
March Weather	0°C (33°F)	84 mm (3.3 inches)	81%	moderate
April Weather	6°C (42°F)	67 mm (2.6 inches)	81%	high
May Weather	11°C (52°F)	89 mm (3.5 inches)	86%	very high
June Weather	15°C (59°F)	94 mm (3.7 inches)	87%	very high
July Weather	21°C (69°F)	103 mm (4.0 inches)	93%	very high
August Weather	21°C (70°F)	171 mm (6.7 inches)	95%	very high
September Weather	18°C (64°F)	90 mm (3.6 inches)	88%	very high
October Weather	12°C (53°F)	147 mm (5.8 inches)	83%	moderate
November Weather	5°C (41°F)	152 mm (6.0 inches)	79%	moderate
December Weather	-2°C (28°F)	132 mm (5.2 inches)	80%	low