September Weather in Numata, Japan

Last updated: August 23, 2025

In September, the average temperature in Numata, Japan is a pleasant 18°C (65°F). Expect a range from a cool 6°C (42°F) to a warm 29°C (85°F). Be prepared for some rain, as the area sees about 161 mm (6.3 in) of precipitation spread over 19 days, contributing to a high average humidity of 89%.

September Temperature in Numata

In September in Numata, the average temperature is 18°C (65°F). Maximums can reach 29°C (85°F), while minimums can dip to as low as 6°C (42°F). This mild climate makes it a great time for travelers to explore and enjoy outdoor activities in Numata.

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

The chart illustrates September temperature patterns in Numata, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Numata, September typically has an average temperature of 18°C (65°F), with highs reaching up to 29°C (85°F) and lows dropping to around 6°C (42°F).

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

September Precipitation in Numata

In Numata in September, the precipitation amount is 161 mm (6.3 in) over the course of 19 days.

September Precipitation Trends in Numata

The chart displays monthly precipitation patterns in Numata, 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 Numata, September typically receives around 161 mm (6.3 inches) of precipitation spread over approximately 19 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 Numata

In Numata in September, humidity is 89%. With an average temperature of 18°C (65°F), this humidity feels like wrapping yourself in a damp blanket while traveling, making it sticky and uncomfortable for outdoor activities.

September Average Humidity in Numata

This chart illustrates the average monthly humidity levels in Numata, 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 Numata is approximately 89%, 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 Numata

In Numata 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 Numata.

Maximum UV Index Levels in Numata for September

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

Data source: Numata 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 Numata Compares to Other Months

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

This table compares monthly weather conditions in Numata, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (28°F)	100 mm (3.9 inches)	88%	moderate
February Weather	-2°C (29°F)	96 mm (3.8 inches)	86%	high
March Weather	3°C (38°F)	136 mm (5.4 inches)	81%	very high
April Weather	8°C (46°F)	132 mm (5.2 inches)	78%	very high
May Weather	14°C (57°F)	143 mm (5.6 inches)	81%	extreme
June Weather	17°C (63°F)	154 mm (6.1 inches)	88%	extreme
July Weather	21°C (70°F)	267 mm (10.5 inches)	92%	extreme
August Weather	23°C (73°F)	160 mm (6.3 inches)	92%	extreme
September Weather	18°C (65°F)	161 mm (6.3 inches)	89%	very high
October Weather	13°C (55°F)	225 mm (8.9 inches)	87%	high
November Weather	6°C (44°F)	64 mm (2.5 inches)	85%	moderate
December Weather	1°C (33°F)	107 mm (4.2 inches)	86%	moderate