September Weather in Wassamu, Japan

Last updated: August 23, 2025

In September, the average temperature in Wassamu, Japan hovers around 16°C (61°F), with a minimum of 2°C (36°F) and a maximum of 29°C (84°F). Expect precipitation of about 92 mm (3.6 in) over 13 days, coupled with a high average humidity of 88%. Be prepared for a mix of wet and warm conditions!

September Temperature in Wassamu

In September in Wassamu, the average temperature is 16°C (61°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as 2°C (36°F). This makes Wassamu an ideal destination for travelers seeking a varied climate, perfect for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Wassamu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wassamu, September typically has an average temperature of 16°C (61°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Wassamu

In Wassamu in September, the precipitation amount is 92 mm (3.6 in) spread over 13 days.

September Precipitation Trends in Wassamu

The chart displays monthly precipitation patterns in Wassamu, 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 Wassamu, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 13 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 Wassamu

In Wassamu in September, humidity is 88%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapping around you, making it slightly uncomfortable for traveling as you may find yourself constantly wiping away beads of sweat while trying to enjoy the sights.

September Average Humidity in Wassamu

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

In Wassamu 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 Wassamu.

Maximum UV Index Levels in Wassamu for September

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

Data source: Wassamu 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 Wassamu Compares to Other Months

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

This table compares monthly weather conditions in Wassamu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	69 mm (2.7 inches)	84%	low
February Weather	-7°C (21°F)	88 mm (3.5 inches)	83%	moderate
March Weather	-1°C (31°F)	92 mm (3.6 inches)	81%	high
April Weather	5°C (42°F)	75 mm (3.0 inches)	81%	high
May Weather	12°C (54°F)	101 mm (4.0 inches)	86%	very high
June Weather	15°C (59°F)	98 mm (3.8 inches)	87%	very high
July Weather	20°C (68°F)	126 mm (4.9 inches)	93%	very high
August Weather	20°C (68°F)	191 mm (7.5 inches)	95%	very high
September Weather	16°C (61°F)	92 mm (3.6 inches)	88%	very high
October Weather	9°C (49°F)	153 mm (6.0 inches)	83%	moderate
November Weather	3°C (37°F)	159 mm (6.2 inches)	79%	moderate
December Weather	-5°C (24°F)	127 mm (5.0 inches)	80%	low