September Weather in Tenno, Japan

Last updated: August 23, 2025

In September, the average temperature in Tenno, Japan hovers around 22°C (72°F), with a minimum of 12°C (53°F) and a maximum reaching 34°C (94°F). Expect 156 mm (6.1 in) of precipitation over approximately 15 days, contributing to an average humidity of 84%. Prepare for a warm and humid climate!

September Temperature in Tenno

In September in Tenno, the average temperature is 22°C (72°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 12°C (53°F). This makes Tenno an ideal destination for travelers seeking pleasant and mild weather for outdoor activities.

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

The chart illustrates September temperature patterns in Tenno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tenno, September typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (94°F) and lows dropping to around 12°C (53°F).

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

September Precipitation in Tenno

In Tenno in September, the total precipitation amount is 156 mm (6.1 in) distributed over 15 days.

September Precipitation Trends in Tenno

The chart displays monthly precipitation patterns in Tenno, 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 Tenno, September typically receives around 156 mm (6.1 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 Tenno

In Tenno in September humidity is 84%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel feel slightly stifling but also lending a vibrant energy to the atmosphere, which can be both invigorating and tiring as you explore.

September Average Humidity in Tenno

This chart illustrates the average monthly humidity levels in Tenno, 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 Tenno is approximately 84%, 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 Tenno

In Tenno in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Tenno.

Maximum UV Index Levels in Tenno for September

The chart shows the monthly maximum UV Index (UVI) for Tenno 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 Tenno typically reaches 9, which falls under the very high exposure category.

Data source: Tenno 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 Tenno Compares to Other Months

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

This table compares monthly weather conditions in Tenno, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (35°F)	94 mm (3.7 inches)	79%	moderate
February Weather	2°C (35°F)	112 mm (4.4 inches)	78%	moderate
March Weather	6°C (43°F)	105 mm (4.1 inches)	76%	high
April Weather	10°C (50°F)	121 mm (4.8 inches)	78%	very high
May Weather	16°C (60°F)	127 mm (5.0 inches)	86%	very high
June Weather	20°C (67°F)	147 mm (5.8 inches)	90%	very high
July Weather	24°C (76°F)	163 mm (6.4 inches)	93%	very high
August Weather	26°C (79°F)	210 mm (8.3 inches)	92%	extreme
September Weather	22°C (72°F)	156 mm (6.1 inches)	84%	very high
October Weather	16°C (61°F)	192 mm (7.6 inches)	80%	high
November Weather	10°C (51°F)	145 mm (5.7 inches)	76%	moderate
December Weather	4°C (40°F)	171 mm (6.7 inches)	78%	low