October Weather in Iwai, Japan

Last updated: August 23, 2025

In October, the average temperature in Iwai, Japan hovers around 18°C (65°F). Expect a minimum of 6°C (44°F) and a maximum of 32°C (90°F), making it a month of considerable variation. Precipitation during this time averages 238 mm (9.4 in) across 14 days, contributing to an average humidity of 83%. Plan accordingly!

October Temperature in Iwai

In October in Iwai, the average temperature is 18°C (65°F). The maximum can reach 32°C (90°F), while the minimum can be as low as 6°C (44°F). This mild climate makes Iwai an ideal destination for travelers seeking pleasant weather during their visit.

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

The chart illustrates October temperature patterns in Iwai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iwai, October typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around 6°C (44°F).

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

October Precipitation in Iwai

In Iwai in October, the total precipitation amount is 238 mm (9.4 in) over a period of 14 days.

October Precipitation Trends in Iwai

The chart displays monthly precipitation patterns in Iwai, 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 Iwai, October typically receives around 238 mm (9.4 inches) of precipitation spread over approximately 14 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 Iwai

In Iwai in October, humidity is 83%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm, damp blanket, making it quite uncomfortable for traveling.

October Average Humidity in Iwai

This chart illustrates the average monthly humidity levels in Iwai, 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 Iwai is approximately 83%, 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 Iwai

In Iwai 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 Iwai.

Maximum UV Index Levels in Iwai for October

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

Data source: Iwai 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 Iwai Compares to Other Months

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

This table compares monthly weather conditions in Iwai, 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 (40°F)	42 mm (1.6 inches)	76%	moderate
February Weather	6°C (42°F)	39 mm (1.5 inches)	74%	moderate
March Weather	10°C (50°F)	123 mm (4.9 inches)	70%	high
April Weather	14°C (58°F)	109 mm (4.3 inches)	74%	very high
May Weather	19°C (67°F)	121 mm (4.8 inches)	81%	very high
June Weather	22°C (72°F)	142 mm (5.6 inches)	88%	extreme
July Weather	26°C (79°F)	225 mm (8.9 inches)	93%	extreme
August Weather	28°C (82°F)	111 mm (4.4 inches)	90%	very high
September Weather	24°C (75°F)	171 mm (6.7 inches)	86%	very high
October Weather	18°C (65°F)	238 mm (9.4 inches)	83%	high
November Weather	13°C (55°F)	72 mm (2.8 inches)	80%	moderate
December Weather	7°C (44°F)	54 mm (2.1 inches)	78%	moderate