September Weather in Tsu, Japan

Last updated: August 23, 2025

In Tsu, Japan, the average temperature in September hovers around 24°C (76°F), creating a pleasantly warm atmosphere. Expect temperatures to range from a minimum of 15°C (59°F) to a maximum of 34°C (93°F). However, prepare for some rain, as precipitation amounts can reach 223 mm (8.8 in) over 18 days. With an average humidity of 87%, be ready for that refreshing, tropical feel!

September Temperature in Tsu

In September in Tsu, the average temperature is 24°C (76°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 15°C (59°F). This makes Tsu an ideal destination for travelers seeking warm and comfortable weather during this time.

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

The chart illustrates September temperature patterns in Tsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tsu, September typically has an average temperature of 24°C (76°F), with highs reaching up to 34°C (93°F) and lows dropping to around 15°C (59°F).

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

September Precipitation in Tsu

In Tsu in September, the precipitation amount is 223 mm (8.8 in) over the course of 18 days.

September Precipitation Trends in Tsu

The chart displays monthly precipitation patterns in Tsu, 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 Tsu, September typically receives around 223 mm (8.8 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 Tsu

In Tsu in September, humidity is 87%. With an average temperature of 24°C (76°F), this humidity feels like a warm, clingy blanket enveloping you, making travel feel sluggish and sticky as you navigate the air thick with moisture.

September Average Humidity in Tsu

This chart illustrates the average monthly humidity levels in Tsu, 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 Tsu is approximately 87%, 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 Tsu

In Tsu in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Tsu.

Maximum UV Index Levels in Tsu for September

The chart shows the monthly maximum UV Index (UVI) for Tsu 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 Tsu typically reaches 10, which falls under the very high exposure category.

Data source: Tsu 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 Tsu Compares to Other Months

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

This table compares monthly weather conditions in Tsu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	55 mm (2.2 inches)	82%	moderate
February Weather	6°C (43°F)	60 mm (2.4 inches)	79%	high
March Weather	10°C (50°F)	157 mm (6.2 inches)	74%	very high
April Weather	14°C (57°F)	149 mm (5.8 inches)	76%	extreme
May Weather	19°C (66°F)	177 mm (7.0 inches)	83%	extreme
June Weather	22°C (72°F)	209 mm (8.2 inches)	87%	extreme
July Weather	26°C (79°F)	320 mm (12.6 inches)	93%	extreme
August Weather	28°C (82°F)	212 mm (8.4 inches)	91%	extreme
September Weather	24°C (76°F)	223 mm (8.8 inches)	87%	very high
October Weather	19°C (66°F)	343 mm (13.5 inches)	85%	high
November Weather	13°C (56°F)	62 mm (2.4 inches)	83%	moderate
December Weather	8°C (46°F)	66 mm (2.6 inches)	83%	moderate