September Weather in Tsukumiura, Japan

Last updated: August 23, 2025

In September, the average temperature in Tsukumiura, Japan hovers around 25°C (77°F), making it a pleasant time to visit. However, be prepared for temperature fluctuations, with a minimum of 14°C (57°F) and a maximum reaching up to 35°C (95°F). Expect 240 mm (9.5 in) of precipitation spread over 17 days, and don’t forget that humidity can be quite high at around 84%.

September Temperature in Tsukumiura

In September in Tsukumiura, the average temperature is 25°C (77°F). Maximums can reach 35°C (95°F) and minimums can be as low as 14°C (57°F). Therefore, it’s a great time for traveling, offering warm days and cooler evenings ideal for outdoor activities.

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

The chart illustrates September temperature patterns in Tsukumiura, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tsukumiura, September typically has an average temperature of 25°C (77°F), with highs reaching up to 35°C (95°F) and lows dropping to around 14°C (57°F).

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

September Precipitation in Tsukumiura

In Tsukumiura in September, the precipitation amount is 240 mm (9.5 in) over the course of 17 days.

September Precipitation Trends in Tsukumiura

The chart displays monthly precipitation patterns in Tsukumiura, 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 Tsukumiura, September typically receives around 240 mm (9.5 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 Tsukumiura

In Tsukumiura in September, humidity is 84%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities challenging and prompting travelers to seek shade and stay hydrated.

September Average Humidity in Tsukumiura

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

In Tsukumiura 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 Tsukumiura.

Maximum UV Index Levels in Tsukumiura for September

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

Data source: Tsukumiura 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 Tsukumiura Compares to Other Months

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

This table compares monthly weather conditions in Tsukumiura, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	56 mm (2.2 inches)	75%	moderate
February Weather	7°C (46°F)	75 mm (2.9 inches)	71%	high
March Weather	11°C (53°F)	116 mm (4.6 inches)	71%	very high
April Weather	15°C (60°F)	110 mm (4.3 inches)	78%	extreme
May Weather	20°C (68°F)	149 mm (5.9 inches)	84%	extreme
June Weather	23°C (74°F)	207 mm (8.2 inches)	86%	extreme
July Weather	27°C (81°F)	336 mm (13.2 inches)	92%	extreme
August Weather	28°C (83°F)	228 mm (9.0 inches)	91%	extreme
September Weather	25°C (77°F)	240 mm (9.5 inches)	84%	extreme
October Weather	20°C (67°F)	233 mm (9.2 inches)	83%	high
November Weather	14°C (57°F)	51 mm (2.0 inches)	81%	high
December Weather	8°C (47°F)	52 mm (2.0 inches)	79%	moderate