September Weather in Horokanai, Japan

Last updated: August 23, 2025

In September, the average temperature in Horokanai, Japan hovers around 16°C (61°F). Expect a minimum of 3°C (38°F) and a comfortable maximum of 29°C (85°F). With 14 rainy days contributing to a precipitation total of 122 mm (4.8 in), the region boasts a high average humidity of 88%. Prepare accordingly!

September Temperature in Horokanai

In September in Horokanai, the average temperature is 16°C (61°F), with maximums reaching 29°C (85°F) and minimums dropping as low as 3°C (38°F). This range of temperatures makes it ideal for travelers to pack layers and enjoy both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Horokanai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Horokanai, September typically has an average temperature of 16°C (61°F), with highs reaching up to 29°C (85°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Horokanai

In Horokanai in September, the total precipitation amount is 122 mm (4.8 in) over the course of 14 days.

September Precipitation Trends in Horokanai

The chart displays monthly precipitation patterns in Horokanai, 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 Horokanai, September typically receives around 122 mm (4.8 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 Horokanai

In Horokanai 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 Horokanai

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

In Horokanai 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 Horokanai.

Maximum UV Index Levels in Horokanai for September

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

Data source: Horokanai 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 Horokanai Compares to Other Months

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

This table compares monthly weather conditions in Horokanai, 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)	67 mm (2.6 inches)	84%	low
February Weather	-6°C (21°F)	87 mm (3.4 inches)	83%	moderate
March Weather	-1°C (31°F)	93 mm (3.7 inches)	81%	high
April Weather	5°C (42°F)	80 mm (3.2 inches)	81%	high
May Weather	12°C (54°F)	113 mm (4.5 inches)	86%	very high
June Weather	15°C (60°F)	118 mm (4.7 inches)	87%	very high
July Weather	20°C (69°F)	147 mm (5.8 inches)	93%	very high
August Weather	20°C (68°F)	208 mm (8.2 inches)	95%	very high
September Weather	16°C (61°F)	122 mm (4.8 inches)	88%	very high
October Weather	10°C (50°F)	169 mm (6.7 inches)	83%	moderate
November Weather	3°C (37°F)	168 mm (6.6 inches)	79%	moderate
December Weather	-5°C (24°F)	129 mm (5.1 inches)	80%	low