September Weather in Shibetsu, Japan

Last updated: August 23, 2025

In September, the average temperature in Shibetsu, Japan hovers around 15°C (60°F). Expect a chill with minimums dipping to 2°C (36°F), while maxima can reach a warm 29°C (84°F). Visitors should prepare for a bit of wet weather, as the area sees an average precipitation of 98 mm (3.9 in) over 13 days. With an average humidity of 86%, it's sure to feel quite muggy!

September Temperature in Shibetsu

In September in Shibetsu, the average temperature is 15°C (60°F). Maximums can reach 29°C (84°F), while minimums can drop to 2°C (36°F). This weather makes it an ideal time to explore Shibetsu, whether you prefer enjoying the warmth of the day or experiencing the cooler evenings.

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

The chart illustrates September temperature patterns in Shibetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shibetsu, September typically has an average temperature of 15°C (60°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Shibetsu

In Shibetsu in September, the precipitation amount is 98 mm (3.9 in) over a span of 13 days.

September Precipitation Trends in Shibetsu

The chart displays monthly precipitation patterns in Shibetsu, 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 Shibetsu, September typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 13 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 Shibetsu

In Shibetsu in September, humidity is 86%. With an average temperature of 15°C (60°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel sticky and heavy, often leading you to seek shade or cool refreshments more frequently as you navigate the sights.

September Average Humidity in Shibetsu

This chart illustrates the average monthly humidity levels in Shibetsu, 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 Shibetsu is approximately 86%, 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 Shibetsu

In Shibetsu in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Shibetsu.

Maximum UV Index Levels in Shibetsu for September

The chart shows the monthly maximum UV Index (UVI) for Shibetsu 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 Shibetsu typically reaches 7, which falls under the high exposure category.

Data source: Shibetsu 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 Shibetsu Compares to Other Months

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

This table compares monthly weather conditions in Shibetsu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (17°F)	64 mm (2.5 inches)	87%	low
February Weather	-7°C (19°F)	80 mm (3.1 inches)	84%	moderate
March Weather	-1°C (30°F)	87 mm (3.4 inches)	83%	high
April Weather	4°C (40°F)	72 mm (2.8 inches)	84%	high
May Weather	11°C (52°F)	100 mm (4.0 inches)	88%	very high
June Weather	14°C (58°F)	105 mm (4.1 inches)	88%	very high
July Weather	19°C (67°F)	117 mm (4.6 inches)	93%	very high
August Weather	19°C (66°F)	180 mm (7.1 inches)	94%	very high
September Weather	15°C (60°F)	98 mm (3.9 inches)	86%	high
October Weather	9°C (48°F)	145 mm (5.7 inches)	79%	moderate
November Weather	2°C (36°F)	146 mm (5.8 inches)	77%	moderate
December Weather	-5°C (23°F)	103 mm (4.1 inches)	83%	low