September Weather in Kasamatsucho, Japan

Last updated: August 23, 2025

In September, the average temperature in Kasamatsucho, Japan hovers around 25°C (76°F), making it a pleasant time to visit. However, expect a minimum of 12°C (54°F) and the temperature can peak at a scorching 37°C (98°F). Be prepared for some showers, as precipitation averages 225 mm (8.9 in) over 16 days, and keep in mind the average humidity sits at a sticky 87%.

September Temperature in Kasamatsucho

In September in Kasamatsucho, the average temperature is 25°C (76°F). Maximums can reach up to 37°C (98°F), while minimums can drop to as low as 12°C (54°F). This diverse temperature range makes Kasamatsucho a great destination for travelers who enjoy warm weather while having the option to experience cooler evenings.

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

The chart illustrates September temperature patterns in Kasamatsucho, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kasamatsucho, September typically has an average temperature of 25°C (76°F), with highs reaching up to 37°C (98°F) and lows dropping to around 12°C (54°F).

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

September Precipitation in Kasamatsucho

In Kasamatsucho in September, the precipitation amount is 225 mm (8.9 in) recorded over a span of 16 days.

September Precipitation Trends in Kasamatsucho

The chart displays monthly precipitation patterns in Kasamatsucho, 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 Kasamatsucho, September typically receives around 225 mm (8.9 inches) of precipitation spread over approximately 16 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 Kasamatsucho

In Kasamatsucho in September, humidity is 87%. With an average temperature of 25°C (76°F), this humidity feels like a heavy blanket enveloping you, making traveling feel a bit sluggish and requiring frequent breaks to hydrate and cool off.

September Average Humidity in Kasamatsucho

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

In Kasamatsucho 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 Kasamatsucho.

Maximum UV Index Levels in Kasamatsucho for September

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

Data source: Kasamatsucho 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 Kasamatsucho Compares to Other Months

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

This table compares monthly weather conditions in Kasamatsucho, 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 (41°F)	52 mm (2.0 inches)	82%	moderate
February Weather	6°C (42°F)	59 mm (2.3 inches)	79%	high
March Weather	10°C (50°F)	151 mm (6.0 inches)	74%	very high
April Weather	14°C (58°F)	163 mm (6.4 inches)	76%	very high
May Weather	19°C (67°F)	196 mm (7.7 inches)	83%	extreme
June Weather	23°C (74°F)	196 mm (7.7 inches)	87%	extreme
July Weather	27°C (81°F)	384 mm (15.1 inches)	93%	extreme
August Weather	29°C (84°F)	253 mm (10.0 inches)	91%	extreme
September Weather	25°C (76°F)	225 mm (8.9 inches)	87%	very high
October Weather	19°C (66°F)	246 mm (9.7 inches)	85%	high
November Weather	13°C (55°F)	61 mm (2.4 inches)	83%	moderate
December Weather	7°C (45°F)	68 mm (2.7 inches)	83%	moderate