September Weather in Omagari, Japan

Last updated: August 23, 2025

In September, the average temperature in Omagari, Japan hovers around 20°C (68°F). Expect a range of 6°C (43°F) as the minimum to a warm 33°C (92°F) at the peak, making it quite the dynamic climate. During this month, you can anticipate 133 mm (5.2 in) of precipitation spread over 14 days, coupled with a humidity level of 86% that adds to the lush atmosphere.

September Temperature in Omagari

In September in Omagari, the average temperature is 20°C (68°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 6°C (43°F). This makes it a great time for travelers to enjoy a variety of outdoor activities, from sunbathing to exploring the local scenery, while being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Omagari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Omagari, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (43°F).

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

September Precipitation in Omagari

In Omagari in September, the precipitation amount is 133 mm (5.2 in) occurring over the course of 14 days.

September Precipitation Trends in Omagari

The chart displays monthly precipitation patterns in Omagari, 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 Omagari, September typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 14 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 Omagari

In Omagari in September, humidity is 86%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities challenging and necessitating frequent breaks for hydration and shade while traveling.

September Average Humidity in Omagari

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

In Omagari in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Omagari.

Maximum UV Index Levels in Omagari for September

The chart shows the monthly maximum UV Index (UVI) for Omagari 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 Omagari typically reaches 9, which falls under the very high exposure category.

Data source: Omagari 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 Omagari Compares to Other Months

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

This table compares monthly weather conditions in Omagari, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	108 mm (4.2 inches)	80%	moderate
February Weather	-1°C (31°F)	127 mm (5.0 inches)	79%	moderate
March Weather	4°C (40°F)	125 mm (4.9 inches)	77%	high
April Weather	9°C (48°F)	141 mm (5.6 inches)	75%	very high
May Weather	15°C (59°F)	135 mm (5.3 inches)	80%	very high
June Weather	19°C (66°F)	147 mm (5.8 inches)	87%	very high
July Weather	23°C (74°F)	191 mm (7.5 inches)	92%	very high
August Weather	24°C (76°F)	210 mm (8.2 inches)	92%	extreme
September Weather	20°C (68°F)	133 mm (5.2 inches)	86%	very high
October Weather	14°C (57°F)	159 mm (6.3 inches)	82%	high
November Weather	8°C (46°F)	127 mm (5.0 inches)	79%	moderate
December Weather	1°C (35°F)	157 mm (6.2 inches)	80%	moderate