September Weather in Aya, Japan

Last updated: August 23, 2025

In Aya, Japan, the average temperature in September hovers around 24°C (76°F), with comfortable minimums of 14°C (57°F) and warm maximums reaching 32°C (91°F). However, be prepared for occasional showers, as precipitation totals around 319 mm (12.5 in) spread over 19 days. With an average humidity of 80%, it's a month that truly showcases the tropical allure of this vibrant locale.

September Temperature in Aya

In September in Aya, the average temperature is 24°C (76°F). Maximums can reach 32°C (91°F), while minimums can drop to as low as 14°C (57°F). This pleasant climate makes Aya an ideal destination for travelers seeking a comfortable getaway.

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

The chart illustrates September temperature patterns in Aya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aya, September typically has an average temperature of 24°C (76°F), with highs reaching up to 32°C (91°F) and lows dropping to around 14°C (57°F).

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

September Precipitation in Aya

In Aya in September, the precipitation amount is 319 mm (12.5 in) over the course of 19 days.

September Precipitation Trends in Aya

The chart displays monthly precipitation patterns in Aya, 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 Aya, September typically receives around 319 mm (12.5 inches) of precipitation spread over approximately 19 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 Aya

In Aya in September humidity is 80%. With an average temperature of 24°C (76°F), this humidity feels like a warm, sticky embrace that can make exploring outdoors quite draining, so it's essential to stay hydrated and take breaks in the shade while traveling.

September Average Humidity in Aya

This chart illustrates the average monthly humidity levels in Aya, 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 Aya is approximately 80%, 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 Aya

In Aya 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 Aya.

Maximum UV Index Levels in Aya for September

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

Data source: Aya 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 Aya Compares to Other Months

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

This table compares monthly weather conditions in Aya, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	55 mm (2.2 inches)	72%	moderate
February Weather	8°C (46°F)	101 mm (4.0 inches)	68%	high
March Weather	12°C (53°F)	176 mm (6.9 inches)	72%	very high
April Weather	15°C (60°F)	141 mm (5.6 inches)	79%	very high
May Weather	19°C (67°F)	225 mm (8.9 inches)	83%	extreme
June Weather	22°C (72°F)	321 mm (12.6 inches)	86%	extreme
July Weather	26°C (79°F)	388 mm (15.3 inches)	90%	extreme
August Weather	27°C (81°F)	247 mm (9.7 inches)	85%	extreme
September Weather	24°C (76°F)	319 mm (12.5 inches)	80%	extreme
October Weather	19°C (67°F)	202 mm (8.0 inches)	78%	very high
November Weather	14°C (57°F)	87 mm (3.4 inches)	76%	high
December Weather	8°C (47°F)	71 mm (2.8 inches)	74%	moderate