September Weather in Ichinomiya, Japan

Last updated: August 23, 2025

In September, the average temperature in Ichinomiya, Japan hovers around 25°C (77°F), with minimums dipping to 19°C (66°F) and maximums reaching a warm 31°C (87°F). Expect 214 mm (8.4 in) of precipitation spread over 17 days, contributing to a notably high average humidity of 83%.

September Temperature in Ichinomiya

In September in Ichinomiya, the average temperature is 25°C (77°F). Maximums can reach 31°C (87°F) and minimums can be as low as 19°C (66°F). This pleasant weather makes it an ideal time for outdoor activities and exploring the vibrant attractions of the area.

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

The chart illustrates September temperature patterns in Ichinomiya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ichinomiya, September typically has an average temperature of 25°C (77°F), with highs reaching up to 31°C (87°F) and lows dropping to around 19°C (66°F).

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

September Precipitation in Ichinomiya

In Ichinomiya in September, the precipitation amount is 214 mm (8.4 in) over the course of 17 days.

September Precipitation Trends in Ichinomiya

The chart displays monthly precipitation patterns in Ichinomiya, 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 Ichinomiya, September typically receives around 214 mm (8.4 inches) of precipitation spread over approximately 17 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 Ichinomiya

In Ichinomiya in September humidity is 83%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket, making it essential for travelers to stay hydrated and seek shade to enjoy their adventures comfortably.

September Average Humidity in Ichinomiya

This chart illustrates the average monthly humidity levels in Ichinomiya, 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 Ichinomiya is approximately 83%, 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 Ichinomiya

In Ichinomiya 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 Ichinomiya.

Maximum UV Index Levels in Ichinomiya for September

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

Data source: Ichinomiya 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 Ichinomiya Compares to Other Months

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

This table compares monthly weather conditions in Ichinomiya, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	77 mm (3.0 inches)	70%	moderate
February Weather	9°C (48°F)	68 mm (2.7 inches)	69%	moderate
March Weather	12°C (54°F)	180 mm (7.1 inches)	68%	very high
April Weather	15°C (59°F)	117 mm (4.6 inches)	73%	very high
May Weather	19°C (67°F)	140 mm (5.5 inches)	81%	extreme
June Weather	22°C (72°F)	206 mm (8.1 inches)	88%	extreme
July Weather	25°C (78°F)	206 mm (8.1 inches)	94%	extreme
August Weather	27°C (81°F)	113 mm (4.5 inches)	87%	extreme
September Weather	25°C (77°F)	214 mm (8.4 inches)	83%	very high
October Weather	21°C (69°F)	292 mm (11.5 inches)	78%	high
November Weather	16°C (62°F)	142 mm (5.6 inches)	74%	moderate
December Weather	11°C (53°F)	114 mm (4.5 inches)	72%	moderate