September Weather in Tosashimizu, Japan

Last updated: August 23, 2025

In September, the average temperature in Tosashimizu, Japan is a pleasant 26°C (79°F), with a comfortable minimum of 21°C (70°F) and a maximum reaching 29°C (85°F). Expect a fair amount of precipitation, totaling 275 mm (10.8 in) over 17 days, contributing to an average humidity level of 85%. Whether you're exploring or relaxing, prepare for a warm and humid climate!

September Temperature in Tosashimizu

In September in Tosashimizu, the average temperature is 26°C (79°F), with maximums reaching up to 29°C (85°F) and minimums dropping to as low as 21°C (70°F). This climate makes it an ideal time for travelers looking to enjoy warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Tosashimizu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tosashimizu, September typically has an average temperature of 26°C (79°F), with highs reaching up to 29°C (85°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in Tosashimizu

In Tosashimizu in September, the total precipitation amount reaches 275 mm (10.8 in) over the course of 17 days.

September Precipitation Trends in Tosashimizu

The chart displays monthly precipitation patterns in Tosashimizu, 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 Tosashimizu, September typically receives around 275 mm (10.8 inches) of precipitation spread over approximately 17 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Tosashimizu

In Tosashimizu in September, humidity is 85%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities feel stifling and exhausting for travelers.

September Average Humidity in Tosashimizu

This chart illustrates the average monthly humidity levels in Tosashimizu, 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 Tosashimizu is approximately 85%, 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 Tosashimizu

In Tosashimizu 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 Tosashimizu.

Maximum UV Index Levels in Tosashimizu for September

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

Data source: Tosashimizu 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 Tosashimizu Compares to Other Months

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

This table compares monthly weather conditions in Tosashimizu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	74 mm (2.9 inches)	74%	moderate
February Weather	11°C (52°F)	113 mm (4.4 inches)	70%	high
March Weather	14°C (58°F)	166 mm (6.5 inches)	70%	very high
April Weather	17°C (63°F)	165 mm (6.5 inches)	76%	very high
May Weather	20°C (69°F)	209 mm (8.2 inches)	82%	extreme
June Weather	23°C (74°F)	261 mm (10.3 inches)	86%	extreme
July Weather	26°C (79°F)	363 mm (14.3 inches)	91%	extreme
August Weather	28°C (82°F)	225 mm (8.9 inches)	88%	extreme
September Weather	26°C (79°F)	275 mm (10.8 inches)	85%	very high
October Weather	22°C (73°F)	269 mm (10.6 inches)	82%	high
November Weather	18°C (64°F)	104 mm (4.1 inches)	79%	high
December Weather	13°C (56°F)	89 mm (3.5 inches)	77%	moderate