August Weather in Oi, Japan

Last updated: August 23, 2025

In August, the average temperature in Oi, Japan is a warm 28°C (82°F), with temperatures ranging from a cool 17°C (62°F) to a scorching 37°C (99°F). Expect a fair amount of rain, with an average precipitation of 133 mm (5.3 in) over 17 days. The air is quite humid, with an average humidity level of 90%, creating a tropical atmosphere.

August Temperature in Oi

In August in Oi, the average temperature is 28°C (82°F). Maximums can reach 37°C (99°F), while minimums can drop to as low as 17°C (62°F). It's an ideal time for travelers seeking warm weather and pleasant conditions for outdoor activities.

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

The chart illustrates August temperature patterns in Oi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oi, August typically has an average temperature of 28°C (82°F), with highs reaching up to 37°C (99°F) and lows dropping to around 17°C (62°F).

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

August Precipitation in Oi

In Oi in August, the total precipitation amount is 133 mm (5.3 in) spread over 17 days.

August Precipitation Trends in Oi

The chart displays monthly precipitation patterns in Oi, 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 Oi, August typically receives around 133 mm (5.3 inches) of precipitation spread over approximately 17 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 Oi

In Oi in August, humidity is 90%. With an average temperature of 28°C (82°F), this humidity feels like a heavy blanket enveloping you, making travel feel stifling and exhausting, as each step feels laborious and sweat clings to your skin.

August Average Humidity in Oi

This chart illustrates the average monthly humidity levels in Oi, 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 Oi is approximately 90%, 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 Oi

In Oi in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Oi.

Maximum UV Index Levels in Oi for August

The chart shows the monthly maximum UV Index (UVI) for Oi 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 Oi typically reaches 11, which falls under the extreme exposure category.

Data source: Oi 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 Oi Compares to Other Months

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

This table compares monthly weather conditions in Oi, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	47 mm (1.8 inches)	76%	moderate
February Weather	6°C (42°F)	50 mm (2.0 inches)	74%	moderate
March Weather	10°C (50°F)	144 mm (5.7 inches)	70%	very high
April Weather	14°C (57°F)	126 mm (5.0 inches)	74%	very high
May Weather	19°C (67°F)	117 mm (4.6 inches)	81%	extreme
June Weather	22°C (72°F)	168 mm (6.6 inches)	88%	extreme
July Weather	26°C (79°F)	252 mm (9.9 inches)	93%	extreme
August Weather	28°C (82°F)	133 mm (5.3 inches)	90%	extreme
September Weather	23°C (74°F)	201 mm (7.9 inches)	86%	very high
October Weather	18°C (64°F)	291 mm (11.4 inches)	83%	high
November Weather	12°C (55°F)	69 mm (2.7 inches)	80%	moderate
December Weather	7°C (44°F)	55 mm (2.2 inches)	78%	moderate