September Weather in Uki, Japan

Last updated: August 23, 2025

In September, the average temperature in Uki, Japan hovers around 23°C (74°F). You'll experience a range of 13°C (56°F) at the lowest to a maximum of 32°C (90°F). Expect 209 mm (8.2 in) of precipitation spread across 17 days, contributing to a high average humidity of 84%.

September Temperature in Uki

In September in Uki, the average temperature is 23°C (74°F). The maximum can reach 32°C (90°F), while the minimum can be as low as 13°C (56°F). This pleasant climate makes Uki an ideal destination for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Uki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Uki, September typically has an average temperature of 23°C (74°F), with highs reaching up to 32°C (90°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Uki

In Uki in September, the precipitation amount is 209 mm (8.2 in) spread over 17 days.

September Precipitation Trends in Uki

The chart displays monthly precipitation patterns in Uki, 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 Uki, September typically receives around 209 mm (8.2 inches) of precipitation spread over approximately 17 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 Uki

In Uki in September, humidity is 84%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel sticky and heavy, while the air's thickness can be quite exhausting for long periods of travel.

September Average Humidity in Uki

This chart illustrates the average monthly humidity levels in Uki, 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 Uki is approximately 84%, 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 Uki

In Uki in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Uki.

Maximum UV Index Levels in Uki for September

The chart shows the monthly maximum UV Index (UVI) for Uki 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 Uki typically reaches 11, which falls under the extreme exposure category.

Data source: Uki 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 Uki Compares to Other Months

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

This table compares monthly weather conditions in Uki, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	64 mm (2.5 inches)	75%	moderate
February Weather	6°C (43°F)	112 mm (4.4 inches)	71%	high
March Weather	10°C (51°F)	157 mm (6.2 inches)	71%	very high
April Weather	14°C (58°F)	150 mm (5.9 inches)	78%	very high
May Weather	19°C (66°F)	229 mm (9.0 inches)	84%	extreme
June Weather	22°C (72°F)	339 mm (13.4 inches)	86%	extreme
July Weather	25°C (78°F)	444 mm (17.5 inches)	92%	extreme
August Weather	26°C (80°F)	238 mm (9.4 inches)	91%	extreme
September Weather	23°C (74°F)	209 mm (8.2 inches)	84%	extreme
October Weather	18°C (65°F)	140 mm (5.5 inches)	83%	very high
November Weather	12°C (54°F)	85 mm (3.4 inches)	81%	high
December Weather	7°C (44°F)	87 mm (3.4 inches)	79%	moderate