September Weather in Rankoshimachi, Japan

Last updated: August 23, 2025

In Rankoshimachi, Japan, the average temperature in September hovers around 18°C (64°F), with a minimum of 7°C (46°F) and a maximum of 28°C (82°F). Expect 131 mm (5.2 in) of precipitation spread across 14 days, contributing to a relatively high average humidity of 88%. Stay prepared for a mix of mild temperatures and considerable moisture!

September Temperature in Rankoshimachi

In September in Rankoshimachi, the average temperature is 18°C (64°F). Maximums can reach 28°C (82°F), and minimums can be as low as 7°C (46°F). This pleasant climate makes Rankoshimachi an ideal destination for travelers seeking comfortable weather during this time of year.

September Weather in Rankoshimachi: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rankoshimachi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rankoshimachi, September typically has an average temperature of 18°C (64°F), with highs reaching up to 28°C (82°F) and lows dropping to around 7°C (46°F).

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

September Precipitation in Rankoshimachi

In Rankoshimachi in September, the precipitation amount is 131 mm (5.2 in) spread over the course of 14 days.

September Precipitation Trends in Rankoshimachi

The chart displays monthly precipitation patterns in Rankoshimachi, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Rankoshimachi, September typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Rankoshimachi

In Rankoshimachi in September, humidity is 88%. With an average temperature of 18°C (64°F), this humidity feels like you’re walking through a warm, enveloping mist, making every step slightly weighted but also refreshing, ideal for leisurely exploration but challenging for strenuous activities.

September Average Humidity in Rankoshimachi

This chart illustrates the average monthly humidity levels in Rankoshimachi, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Rankoshimachi is approximately 88%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Rankoshimachi

In Rankoshimachi in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Rankoshimachi.

Maximum UV Index Levels in Rankoshimachi for September

The chart shows the monthly maximum UV Index (UVI) for Rankoshimachi in September, 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 September, the maximum UV index in Rankoshimachi typically reaches 8, which falls under the very high exposure category.

Data source: Rankoshimachi September 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 September Weather in Rankoshimachi Compares to Other Months

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

This table compares monthly weather conditions in Rankoshimachi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	74 mm (2.9 inches)	84%	low
February Weather	-4°C (25°F)	81 mm (3.2 inches)	83%	moderate
March Weather	1°C (33°F)	93 mm (3.7 inches)	81%	high
April Weather	5°C (41°F)	89 mm (3.5 inches)	81%	high
May Weather	11°C (52°F)	84 mm (3.3 inches)	86%	very high
June Weather	15°C (59°F)	110 mm (4.3 inches)	87%	very high
July Weather	20°C (68°F)	100 mm (3.9 inches)	93%	very high
August Weather	21°C (69°F)	147 mm (5.8 inches)	95%	very high
September Weather	18°C (64°F)	131 mm (5.2 inches)	88%	very high
October Weather	11°C (53°F)	127 mm (5.0 inches)	83%	moderate
November Weather	5°C (41°F)	136 mm (5.4 inches)	79%	moderate
December Weather	-2°C (28°F)	116 mm (4.6 inches)	80%	low