September Weather in Izunokuni, Japan

Last updated: August 23, 2025

In September, the average temperature in Izunokuni, Japan is 23°C (74°F), making it a pleasant time to explore. Expect a minimum of 15°C (60°F) and a maximum of 33°C (91°F) during the day. However, be prepared for precipitation—averaging 221 mm (8.7 in) over 20 days—and a high humidity level of 86%, which adds a tropical touch to your adventures!

September Temperature in Izunokuni

In September in Izunokuni, the average temperature is 23°C (74°F). Maximums can reach 33°C (91°F) and minimums can be as low as 15°C (60°F). It's an ideal time for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Izunokuni, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Izunokuni, September typically has an average temperature of 23°C (74°F), with highs reaching up to 33°C (91°F) and lows dropping to around 15°C (60°F).

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

September Precipitation in Izunokuni

In Izunokuni in September, the total precipitation amount is 221 mm (8.7 in) spread over 20 days.

September Precipitation Trends in Izunokuni

The chart displays monthly precipitation patterns in Izunokuni, 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 Izunokuni, September typically receives around 221 mm (8.7 inches) of precipitation spread over approximately 20 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 Izunokuni

In Izunokuni in September, humidity is 86%. With an average temperature of 23°C (74°F), this humidity feels like you're stepping into a warm embrace, making travel a bit sticky yet invigorating, as the air wraps around you, inviting you to explore while reminding you to stay hydrated.

September Average Humidity in Izunokuni

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

In Izunokuni 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 Izunokuni.

Maximum UV Index Levels in Izunokuni for September

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

Data source: Izunokuni 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 Izunokuni Compares to Other Months

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

This table compares monthly weather conditions in Izunokuni, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	68 mm (2.7 inches)	76%	moderate
February Weather	7°C (45°F)	83 mm (3.2 inches)	74%	high
March Weather	11°C (51°F)	196 mm (7.7 inches)	70%	very high
April Weather	14°C (57°F)	168 mm (6.6 inches)	74%	very high
May Weather	18°C (65°F)	194 mm (7.6 inches)	81%	extreme
June Weather	21°C (71°F)	263 mm (10.3 inches)	88%	extreme
July Weather	25°C (77°F)	326 mm (12.8 inches)	93%	extreme
August Weather	27°C (81°F)	176 mm (6.9 inches)	90%	extreme
September Weather	23°C (74°F)	221 mm (8.7 inches)	86%	very high
October Weather	19°C (66°F)	305 mm (12.0 inches)	83%	high
November Weather	14°C (58°F)	94 mm (3.7 inches)	80%	moderate
December Weather	9°C (49°F)	74 mm (2.9 inches)	78%	moderate