September Weather in Tsuma, Japan

Last updated: August 23, 2025

In September, the average temperature in Tsuma, Japan reaches a pleasant 26°C (78°F), with a minimum of 20°C (67°F) and a maximum of 31°C (88°F). However, visitors should prepare for some rain, as there's an average precipitation of 317 mm (12.5 in) spread over 18 days. Additionally, the air tends to be quite humid with an average of around 80%.

September Temperature in Tsuma

In September in Tsuma, the average temperature is 26°C (78°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop to as low as 20°C (67°F). This pleasant climate makes it an ideal time for exploring the area's attractions and enjoying outdoor activities.

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

The chart illustrates September temperature patterns in Tsuma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tsuma, September typically has an average temperature of 26°C (78°F), with highs reaching up to 31°C (88°F) and lows dropping to around 20°C (67°F).

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

September Precipitation in Tsuma

In Tsuma in September, the precipitation amount is 317 mm (12.5 in) occurring over the course of 18 days.

September Precipitation Trends in Tsuma

The chart displays monthly precipitation patterns in Tsuma, 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 Tsuma, September typically receives around 317 mm (12.5 inches) of precipitation spread over approximately 18 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 Tsuma

In Tsuma in September, humidity is 80%. With an average temperature of 26°C (78°F), this humidity feels like a warm blanket enveloping you, making travel a bit sticky yet vibrant, as you experience the lively atmosphere infused with the scent of tropical blooms and the soothing presence of nearby water.

September Average Humidity in Tsuma

This chart illustrates the average monthly humidity levels in Tsuma, 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 Tsuma is approximately 80%, 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 Tsuma

In Tsuma in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Tsuma.

Maximum UV Index Levels in Tsuma for September

The chart shows the monthly maximum UV Index (UVI) for Tsuma 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 Tsuma typically reaches 11, which falls under the extreme exposure category.

Data source: Tsuma 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 Tsuma Compares to Other Months

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

This table compares monthly weather conditions in Tsuma, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	59 mm (2.3 inches)	72%	moderate
February Weather	10°C (51°F)	107 mm (4.2 inches)	68%	high
March Weather	14°C (57°F)	170 mm (6.7 inches)	72%	very high
April Weather	17°C (62°F)	139 mm (5.5 inches)	79%	very high
May Weather	20°C (69°F)	218 mm (8.6 inches)	83%	extreme
June Weather	23°C (74°F)	299 mm (11.8 inches)	86%	extreme
July Weather	26°C (80°F)	332 mm (13.1 inches)	90%	extreme
August Weather	28°C (82°F)	236 mm (9.3 inches)	85%	extreme
September Weather	26°C (78°F)	317 mm (12.5 inches)	80%	extreme
October Weather	22°C (71°F)	223 mm (8.8 inches)	78%	very high
November Weather	17°C (63°F)	88 mm (3.4 inches)	76%	high
December Weather	12°C (54°F)	68 mm (2.7 inches)	74%	moderate