September Weather in Date, Japan

Last updated: August 23, 2025

In September, the average temperature in Date, Japan is a pleasant 18°C (66°F), with a range that can dip to a cool 8°C (47°F) and climb to a warm 29°C (84°F). Expect around 103 mm (4.1 in) of precipitation over approximately 12 days, contributing to a high average humidity of 88%. Enjoy the unique climate that this locale offers!

September Temperature in Date

In September in Date, the average temperature is 18°C (66°F), with maximums reaching 29°C (84°F) and minimums dipping as low as 8°C (47°F). This mild climate makes Date an ideal destination for travelers looking to enjoy comfortable weather.

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

The chart illustrates September temperature patterns in Date, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Date, September typically has an average temperature of 18°C (66°F), with highs reaching up to 29°C (84°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Date

In Date in September, the total precipitation amount is 103 mm (4.1 in), occurring over the course of 12 days.

September Precipitation Trends in Date

The chart displays monthly precipitation patterns in Date, 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 Date, September typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 12 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 Date

In Date in September humidity is 88%. With an average temperature of 18°C (66°F), this humidity feels like a warm embrace, wrapping around you and making travel feel both cloying and refreshing at the same time, as the air weighs heavily but carries the promise of vibrant, lush landscapes waiting to be explored.

September Average Humidity in Date

This chart illustrates the average monthly humidity levels in Date, 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 Date is approximately 88%, 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 Date

In Date in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Date.

Maximum UV Index Levels in Date for September

The chart shows the monthly maximum UV Index (UVI) for Date 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 Date typically reaches 8, which falls under the very high exposure category.

Data source: Date 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 Date Compares to Other Months

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

This table compares monthly weather conditions in Date, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	52 mm (2.0 inches)	84%	low
February Weather	-3°C (27°F)	54 mm (2.1 inches)	83%	moderate
March Weather	2°C (35°F)	78 mm (3.1 inches)	81%	moderate
April Weather	6°C (44°F)	87 mm (3.4 inches)	81%	high
May Weather	12°C (54°F)	82 mm (3.2 inches)	86%	very high
June Weather	16°C (61°F)	104 mm (4.1 inches)	87%	very high
July Weather	20°C (69°F)	97 mm (3.8 inches)	93%	very high
August Weather	21°C (71°F)	143 mm (5.6 inches)	95%	very high
September Weather	18°C (66°F)	103 mm (4.1 inches)	88%	very high
October Weather	13°C (55°F)	103 mm (4.1 inches)	83%	high
November Weather	6°C (43°F)	92 mm (3.6 inches)	79%	moderate
December Weather	-1°C (30°F)	66 mm (2.6 inches)	80%	low