October Weather in Chonan, Japan

Last updated: August 23, 2025

The average temperature in Chonan, Japan during October hovers around 19°C (67°F), making it a pleasant time to visit. Expect temperatures to range from a cool 10°C (50°F) to a warm 29°C (85°F). However, be prepared for some rain; with an average precipitation of 271 mm (10.7 in) spread over 16 days, the air maintains a high humidity level of 78%.

October Temperature in Chonan

In October in Chonan, the average temperature is 19°C (67°F). The maximum can reach 29°C (85°F), and the minimum can be as low as 10°C (50°F). It's a great time to enjoy outdoor activities while packing for both warm and cooler conditions.

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

The chart illustrates October temperature patterns in Chonan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chonan, October typically has an average temperature of 19°C (67°F), with highs reaching up to 29°C (85°F) and lows dropping to around 10°C (50°F).

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

October Precipitation in Chonan

In Chonan in October, the precipitation amount is 271 mm (10.7 in) over the course of 16 days.

October Precipitation Trends in Chonan

The chart displays monthly precipitation patterns in Chonan, 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 Chonan, October typically receives around 271 mm (10.7 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Chonan

In Chonan in October humidity is 78%. With an average temperature of 19°C (67°F), this humidity feels like a warm, heavy blanket enveloping you, making traveling feel both sticky and sluggish as you navigate through the day.

October Average Humidity in Chonan

This chart illustrates the average monthly humidity levels in Chonan, 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 Chonan is approximately 78%, 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 Chonan

In Chonan in October, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Chonan.

Maximum UV Index Levels in Chonan for October

The chart shows the monthly maximum UV Index (UVI) for Chonan 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 Chonan typically reaches 7, which falls under the high exposure category.

Data source: Chonan 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 Chonan Compares to Other Months

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

This table compares monthly weather conditions in Chonan, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	58 mm (2.3 inches)	70%	moderate
February Weather	7°C (45°F)	49 mm (1.9 inches)	69%	moderate
March Weather	11°C (52°F)	148 mm (5.8 inches)	68%	very high
April Weather	15°C (58°F)	117 mm (4.6 inches)	73%	very high
May Weather	19°C (67°F)	131 mm (5.1 inches)	81%	extreme
June Weather	22°C (72°F)	171 mm (6.7 inches)	88%	extreme
July Weather	26°C (79°F)	205 mm (8.1 inches)	94%	extreme
August Weather	28°C (82°F)	105 mm (4.1 inches)	87%	extreme
September Weather	24°C (76°F)	192 mm (7.6 inches)	83%	very high
October Weather	19°C (67°F)	271 mm (10.7 inches)	78%	high
November Weather	15°C (59°F)	107 mm (4.2 inches)	74%	moderate
December Weather	9°C (49°F)	78 mm (3.1 inches)	72%	moderate