September Weather in Ashibetsu, Japan

Last updated: August 23, 2025

In Ashibetsu, Japan, the average temperature in September hovers around 16°C (61°F). Expect the minimum to dip to 2°C (36°F), while highs can reach up to 29°C (84°F). Be prepared for some rain, as the precipitation amounts to 114 mm (4.5 in) over approximately 14 days. With an average humidity of 88%, the atmosphere is quite moist, making it ideal for those who enjoy a lush, vibrant environment.

September Temperature in Ashibetsu

In September in Ashibetsu, the average temperature is 16°C (61°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as 2°C (36°F). This makes Ashibetsu an ideal destination for travelers seeking a varied climate, perfect for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Ashibetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ashibetsu, September typically has an average temperature of 16°C (61°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Ashibetsu

In Ashibetsu in September, the total precipitation amount is 114 mm (4.5 in) over the course of 14 days.

September Precipitation Trends in Ashibetsu

The chart displays monthly precipitation patterns in Ashibetsu, 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 Ashibetsu, September typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 14 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 Ashibetsu

In Ashibetsu in September, humidity is 88%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapping around you, making it slightly uncomfortable for traveling as you may find yourself constantly wiping away beads of sweat while trying to enjoy the sights.

September Average Humidity in Ashibetsu

This chart illustrates the average monthly humidity levels in Ashibetsu, 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 Ashibetsu is approximately 88%, 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 Ashibetsu

In Ashibetsu in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Ashibetsu.

Maximum UV Index Levels in Ashibetsu for September

The chart shows the monthly maximum UV Index (UVI) for Ashibetsu 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 Ashibetsu typically reaches 8, which falls under the very high exposure category.

Data source: Ashibetsu 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 Ashibetsu Compares to Other Months

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

This table compares monthly weather conditions in Ashibetsu, 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 (18°F)	61 mm (2.4 inches)	84%	low
February Weather	-7°C (20°F)	82 mm (3.2 inches)	83%	moderate
March Weather	-1°C (31°F)	92 mm (3.6 inches)	81%	high
April Weather	5°C (41°F)	79 mm (3.1 inches)	81%	high
May Weather	12°C (54°F)	104 mm (4.1 inches)	86%	very high
June Weather	15°C (60°F)	106 mm (4.2 inches)	87%	very high
July Weather	20°C (68°F)	116 mm (4.6 inches)	93%	very high
August Weather	20°C (68°F)	185 mm (7.3 inches)	95%	very high
September Weather	16°C (61°F)	114 mm (4.5 inches)	88%	very high
October Weather	9°C (49°F)	149 mm (5.9 inches)	83%	moderate
November Weather	2°C (36°F)	145 mm (5.7 inches)	79%	moderate
December Weather	-5°C (23°F)	111 mm (4.4 inches)	80%	low