July Weather in Oyama, Japan

Last updated: August 23, 2025

In Oyama, Japan, the average temperature in July hovers around 25°C (78°F). Expect a comfortable minimum of 21°C (71°F) and a cozy maximum of 29°C (85°F). However, be prepared for some rain, with an average precipitation of 363 mm (14.3 in) over about 18 days. With an average humidity of 93%, it's the perfect time to embrace the tropical vibe!

July Temperature in Oyama

In July in Oyama, the average temperature is 25°C (78°F). The maximum can reach 29°C (85°F) and the minimum can be as low as 21°C (71°F). This pleasant weather makes it an ideal time for outdoor activities and exploration.

July Weather in Oyama: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Oyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oyama, July typically has an average temperature of 25°C (78°F), with highs reaching up to 29°C (85°F) and lows dropping to around 21°C (71°F).

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

July Precipitation in Oyama

In Oyama in July, the total precipitation amount is 363 mm (14.3 in) over a span of 18 days.

July Precipitation Trends in Oyama

The chart displays monthly precipitation patterns in Oyama, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Oyama, July typically receives around 363 mm (14.3 inches) of precipitation spread over approximately 18 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Oyama

In Oyama in July humidity is 93%. With an average temperature of 25°C (78°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and exhausting as you navigate through the air that clings to your skin.

July Average Humidity in Oyama

This chart illustrates the average monthly humidity levels in Oyama, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Oyama is approximately 93%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Oyama

In Oyama in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Oyama.

Maximum UV Index Levels in Oyama for July

The chart shows the monthly maximum UV Index (UVI) for Oyama in July, 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 July, the maximum UV index in Oyama typically reaches 12, which falls under the extreme exposure category.

Data source: Oyama July 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 July Weather in Oyama Compares to Other Months

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

This table compares monthly weather conditions in Oyama, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (49°F)	70 mm (2.8 inches)	76%	moderate
February Weather	10°C (50°F)	93 mm (3.7 inches)	74%	high
March Weather	13°C (55°F)	189 mm (7.4 inches)	70%	very high
April Weather	16°C (60°F)	164 mm (6.4 inches)	74%	very high
May Weather	19°C (67°F)	213 mm (8.4 inches)	81%	extreme
June Weather	22°C (72°F)	302 mm (11.9 inches)	88%	extreme
July Weather	25°C (78°F)	363 mm (14.3 inches)	93%	extreme
August Weather	27°C (81°F)	163 mm (6.4 inches)	90%	extreme
September Weather	25°C (78°F)	255 mm (10.0 inches)	86%	very high
October Weather	22°C (71°F)	328 mm (12.9 inches)	83%	high
November Weather	17°C (63°F)	137 mm (5.4 inches)	80%	moderate
December Weather	12°C (55°F)	99 mm (3.9 inches)	78%	moderate