October Weather in Oyama, Japan

Last updated: August 23, 2025

In October, the average temperature in Oyama, Japan hovers around 18°C (64°F). Temperatures can vary significantly, with a minimum of 5°C (41°F) and a maximum reaching 32°C (89°F). Expect about 258 mm (10.1 in) of precipitation over 16 days, contributing to the average humidity level of a high 87%. Prepare for a mix of weather in this vibrant locale!

October Temperature in Oyama

In October in Oyama, the average temperature is 18°C (64°F). The maximum can reach 32°C (89°F), and the minimum can be as low as 5°C (41°F). This wide range of temperatures makes Oyama a versatile destination for travelers, offering both warm days and cooler evenings.

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

The chart illustrates October 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, October typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (89°F) and lows dropping to around 5°C (41°F).

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

October Precipitation in Oyama

In Oyama in October, the precipitation amount is 258 mm (10.1 in) over the course of 16 days.

October Precipitation Trends in Oyama

The chart displays monthly precipitation patterns in Oyama, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Oyama, October typically receives around 258 mm (10.1 inches) of precipitation spread over approximately 16 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Oyama

In Oyama in October humidity is 87%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as the air clings to your skin and saps your energy, urging you to seek shade and refreshing drinks more frequently.

October Average Humidity in Oyama

This chart illustrates the average monthly humidity levels in Oyama, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Oyama is approximately 87%, offering insight into how humid the weather typically is during this month.

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

October UV Index in Oyama

In Oyama in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Oyama, you can refer to this Hourly UV Index in Oyama.

Maximum UV Index Levels in Oyama for October

The chart shows the monthly maximum UV Index (UVI) for Oyama in October, 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 October, the maximum UV index in Oyama typically reaches 6, which falls under the high exposure category.

Data source: Oyama October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	38 mm (1.5 inches)	88%	moderate
February Weather	5°C (41°F)	41 mm (1.6 inches)	86%	moderate
March Weather	9°C (49°F)	131 mm (5.2 inches)	81%	high
April Weather	14°C (57°F)	129 mm (5.1 inches)	78%	very high
May Weather	19°C (66°F)	137 mm (5.4 inches)	81%	very high
June Weather	22°C (72°F)	160 mm (6.3 inches)	88%	extreme
July Weather	26°C (78°F)	258 mm (10.2 inches)	92%	extreme
August Weather	27°C (82°F)	156 mm (6.1 inches)	92%	very high
September Weather	23°C (74°F)	195 mm (7.7 inches)	89%	very high
October Weather	18°C (64°F)	258 mm (10.1 inches)	87%	high
November Weather	12°C (53°F)	67 mm (2.6 inches)	85%	moderate
December Weather	6°C (43°F)	50 mm (2.0 inches)	86%	moderate