September Weather in Akaigawa, Japan

Last updated: August 23, 2025

In September, the average temperature in Akaigawa, Japan is a pleasant 16°C (62°F). Visitors can expect a range from a cool 4°C (40°F) to a warm 28°C (82°F). During this time, 124 mm (4.9 in) of precipitation typically falls over 15 days, contributing to an average humidity of 88%. Be prepared for the delightful, yet occasionally damp, weather!

September Temperature in Akaigawa

In September in Akaigawa, the average temperature is 16°C (62°F). Maximums can reach 28°C (82°F), while minimums can drop as low as 4°C (40°F). This mild climate makes Akaigawa an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates September temperature patterns in Akaigawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Akaigawa, September typically has an average temperature of 16°C (62°F), with highs reaching up to 28°C (82°F) and lows dropping to around 4°C (40°F).

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

September Precipitation in Akaigawa

In Akaigawa in September, the total precipitation amount is 124 mm (4.9 in) over a period of 15 days.

September Precipitation Trends in Akaigawa

The chart displays monthly precipitation patterns in Akaigawa, 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 Akaigawa, September typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 15 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Akaigawa

In Akaigawa in September humidity is 88%. With an average temperature of 16°C (62°F), this humidity feels like a heavy blanket enveloping you, making each step feel sluggish and draining, which can be quite challenging for travelers.

September Average Humidity in Akaigawa

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

In Akaigawa 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 Akaigawa.

Maximum UV Index Levels in Akaigawa for September

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

Data source: Akaigawa 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 Akaigawa Compares to Other Months

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

This table compares monthly weather conditions in Akaigawa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	73 mm (2.9 inches)	84%	low
February Weather	-5°C (23°F)	82 mm (3.2 inches)	83%	moderate
March Weather	0°C (32°F)	97 mm (3.8 inches)	81%	moderate
April Weather	4°C (39°F)	90 mm (3.5 inches)	81%	high
May Weather	11°C (52°F)	90 mm (3.5 inches)	86%	very high
June Weather	15°C (59°F)	117 mm (4.6 inches)	87%	very high
July Weather	20°C (68°F)	91 mm (3.6 inches)	93%	very high
August Weather	20°C (68°F)	150 mm (5.9 inches)	95%	very high
September Weather	16°C (62°F)	124 mm (4.9 inches)	88%	very high
October Weather	10°C (50°F)	132 mm (5.2 inches)	83%	moderate
November Weather	3°C (38°F)	137 mm (5.4 inches)	79%	moderate
December Weather	-4°C (24°F)	104 mm (4.1 inches)	80%	low