September Weather in Tadotsu, Japan

Last updated: August 23, 2025

In Tadotsu, Japan, the average temperature in September is a pleasant 25°C (77°F). Expect a range from a comfortable 17°C (64°F) at night to a warm 34°C (93°F) during the day. Be prepared for some rain, as 187 mm (7.4 in) of precipitation typically falls over 13 days of the month. With an average humidity of 87%, the air can feel quite moist and tropical.

September Temperature in Tadotsu

In September in Tadotsu, the average temperature is 25°C (77°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 17°C (64°F). It's a perfect time for travelers to enjoy mild weather while exploring the area's attractions.

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

The chart illustrates September temperature patterns in Tadotsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tadotsu, September typically has an average temperature of 25°C (77°F), with highs reaching up to 34°C (93°F) and lows dropping to around 17°C (64°F).

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

September Precipitation in Tadotsu

In Tadotsu in September, the total precipitation amount is 187 mm (7.4 in) spread over 13 days.

September Precipitation Trends in Tadotsu

The chart displays monthly precipitation patterns in Tadotsu, 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 Tadotsu, September typically receives around 187 mm (7.4 inches) of precipitation spread over approximately 13 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 Tadotsu

In Tadotsu in September, humidity is 87%. With an average temperature of 25°C (77°F), this humidity feels like a thick, warm blanket enveloping you, making travel a challenge as sweat clings to your skin and the air feels heavy and stifling.

September Average Humidity in Tadotsu

This chart illustrates the average monthly humidity levels in Tadotsu, 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 Tadotsu is approximately 87%, 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 Tadotsu

In Tadotsu 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 Tadotsu.

Maximum UV Index Levels in Tadotsu for September

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

Data source: Tadotsu 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 Tadotsu Compares to Other Months

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

This table compares monthly weather conditions in Tadotsu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	49 mm (1.9 inches)	82%	moderate
February Weather	7°C (45°F)	64 mm (2.5 inches)	79%	moderate
March Weather	10°C (51°F)	102 mm (4.0 inches)	73%	very high
April Weather	14°C (58°F)	120 mm (4.7 inches)	74%	very high
May Weather	19°C (67°F)	125 mm (4.9 inches)	84%	extreme
June Weather	22°C (73°F)	161 mm (6.3 inches)	86%	extreme
July Weather	26°C (80°F)	282 mm (11.1 inches)	92%	extreme
August Weather	28°C (83°F)	136 mm (5.3 inches)	92%	extreme
September Weather	25°C (77°F)	187 mm (7.4 inches)	87%	very high
October Weather	20°C (68°F)	206 mm (8.1 inches)	85%	high
November Weather	14°C (58°F)	48 mm (1.9 inches)	84%	moderate
December Weather	9°C (48°F)	53 mm (2.1 inches)	82%	moderate