September Weather in Heda, Japan

Last updated: August 23, 2025

In September, the average temperature in Heda, Japan is a comfortable 24°C (75°F), with a range that can dip to a cool 17°C (63°F) at night and rise to a warm 30°C (85°F) during the day. Expect considerable precipitation, averaging 242 mm (9.5 in) over 17 days, coupled with a high average humidity of 86%. Perfect for those who enjoy a tropical climate!

September Temperature in Heda

In September in Heda, the average temperature is 24°C (75°F). Maximums can reach 30°C (85°F), and minimums can be as low as 17°C (63°F). This pleasant climate makes Heda an ideal destination for travelers seeking comfortable weather.

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

The chart illustrates September temperature patterns in Heda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heda, September typically has an average temperature of 24°C (75°F), with highs reaching up to 30°C (85°F) and lows dropping to around 17°C (63°F).

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

September Precipitation in Heda

In Heda in September, the precipitation amount is 242 mm (9.5 in) spread over 17 days.

September Precipitation Trends in Heda

The chart displays monthly precipitation patterns in Heda, 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 Heda, September typically receives around 242 mm (9.5 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 Heda

In Heda in September, humidity is 86%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable and requiring travelers to stay hydrated and take breaks in the shade.

September Average Humidity in Heda

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

In Heda 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 Heda.

Maximum UV Index Levels in Heda for September

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

Data source: Heda 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 Heda Compares to Other Months

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

This table compares monthly weather conditions in Heda, 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 (46°F)	71 mm (2.8 inches)	76%	moderate
February Weather	8°C (46°F)	99 mm (3.9 inches)	74%	high
March Weather	11°C (52°F)	219 mm (8.6 inches)	70%	very high
April Weather	14°C (57°F)	226 mm (8.9 inches)	74%	very high
May Weather	18°C (64°F)	236 mm (9.3 inches)	81%	extreme
June Weather	21°C (70°F)	286 mm (11.3 inches)	88%	extreme
July Weather	24°C (76°F)	437 mm (17.2 inches)	93%	extreme
August Weather	26°C (80°F)	223 mm (8.8 inches)	90%	extreme
September Weather	24°C (75°F)	242 mm (9.5 inches)	86%	very high
October Weather	19°C (67°F)	296 mm (11.6 inches)	83%	high
November Weather	15°C (59°F)	102 mm (4.0 inches)	80%	moderate
December Weather	10°C (51°F)	84 mm (3.3 inches)	78%	moderate