October Weather in Rumoi, Japan

Last updated: August 23, 2025

In October, the average temperature in Rumoi, Japan hovers around 12°C (53°F). While you may experience a minimum of 1°C (34°F), temperatures can peak at a refreshing 21°C (71°F). Be prepared for some rain, as the region sees an average precipitation of 147 mm (5.8 in) across 16 days, coupled with a notable average humidity of 83%.

October Temperature in Rumoi

In October in Rumoi, the average temperature is 12°C (53°F). The maximum can reach 21°C (71°F), while the minimum can be as low as 1°C (34°F). This makes it an ideal time for travelers to enjoy mild weather and explore the sights comfortably.

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

The chart illustrates October temperature patterns in Rumoi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rumoi, October typically has an average temperature of 12°C (53°F), with highs reaching up to 21°C (71°F) and lows dropping to around 1°C (34°F).

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

October Precipitation in Rumoi

In Rumoi in October, the precipitation amount is 147 mm (5.8 in) spread over 16 days.

October Precipitation Trends in Rumoi

The chart displays monthly precipitation patterns in Rumoi, 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 Rumoi, October typically receives around 147 mm (5.8 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 Rumoi

In Rumoi in October humidity is 83%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and necessitating layers to stay comfortable while traveling.

October Average Humidity in Rumoi

This chart illustrates the average monthly humidity levels in Rumoi, 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 Rumoi 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 Rumoi

In Rumoi in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Rumoi.

Maximum UV Index Levels in Rumoi for October

The chart shows the monthly maximum UV Index (UVI) for Rumoi 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 Rumoi typically reaches 5, which falls under the moderate exposure category.

Data source: Rumoi 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 Rumoi Compares to Other Months

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

This table compares monthly weather conditions in Rumoi, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (22°F)	70 mm (2.8 inches)	84%	low
February Weather	-4°C (24°F)	84 mm (3.3 inches)	83%	moderate
March Weather	0°C (33°F)	84 mm (3.3 inches)	81%	moderate
April Weather	6°C (42°F)	67 mm (2.6 inches)	81%	high
May Weather	11°C (52°F)	89 mm (3.5 inches)	86%	very high
June Weather	15°C (59°F)	94 mm (3.7 inches)	87%	very high
July Weather	21°C (69°F)	103 mm (4.0 inches)	93%	very high
August Weather	21°C (70°F)	171 mm (6.7 inches)	95%	very high
September Weather	18°C (64°F)	90 mm (3.6 inches)	88%	very high
October Weather	12°C (53°F)	147 mm (5.8 inches)	83%	moderate
November Weather	5°C (41°F)	152 mm (6.0 inches)	79%	moderate
December Weather	-2°C (28°F)	132 mm (5.2 inches)	80%	low