September Weather in Kamoenai, Japan

Last updated: August 23, 2025

In September, the average temperature in Kamoenai, Japan is a pleasant 18°C (65°F). Expect a minimum temperature of 9°C (48°F) and a comfortable maximum of 28°C (82°F). However, be prepared for some rain, as precipitation averages 115 mm (4.5 in) over 14 days, and humidity hovers around 88%.

September Temperature in Kamoenai

In September in Kamoenai, the average temperature is 18°C (65°F). The maximum can reach 28°C (82°F), while the minimum can drop to as low as 9°C (48°F). This mild weather makes it an ideal time for travelers to explore the sights and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Kamoenai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kamoenai, September typically has an average temperature of 18°C (65°F), with highs reaching up to 28°C (82°F) and lows dropping to around 9°C (48°F).

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

September Precipitation in Kamoenai

In Kamoenai in September, the precipitation amount is 115 mm (4.5 in) over the course of 14 days.

September Precipitation Trends in Kamoenai

The chart displays monthly precipitation patterns in Kamoenai, 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 Kamoenai, September typically receives around 115 mm (4.5 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 Kamoenai

In Kamoenai in September, humidity is 88%. With an average temperature of 18°C (65°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly sticky and the air thick, which can be quite tiring when exploring the area.

September Average Humidity in Kamoenai

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

In Kamoenai 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 Kamoenai.

Maximum UV Index Levels in Kamoenai for September

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

Data source: Kamoenai 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 Kamoenai Compares to Other Months

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

This table compares monthly weather conditions in Kamoenai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	90 mm (3.6 inches)	84%	low
February Weather	-3°C (27°F)	98 mm (3.8 inches)	83%	moderate
March Weather	2°C (35°F)	88 mm (3.5 inches)	81%	moderate
April Weather	5°C (42°F)	76 mm (3.0 inches)	81%	high
May Weather	11°C (53°F)	83 mm (3.3 inches)	86%	very high
June Weather	15°C (59°F)	99 mm (3.9 inches)	87%	very high
July Weather	20°C (68°F)	78 mm (3.1 inches)	93%	very high
August Weather	21°C (71°F)	141 mm (5.6 inches)	95%	very high
September Weather	18°C (65°F)	115 mm (4.5 inches)	88%	very high
October Weather	12°C (55°F)	147 mm (5.8 inches)	83%	moderate
November Weather	6°C (42°F)	159 mm (6.3 inches)	79%	moderate
December Weather	-1°C (30°F)	135 mm (5.3 inches)	80%	low