September Weather in Saijo, Japan

Last updated: August 23, 2025

In Saijo, Japan, the average temperature in September hovers around 21°C (70°F), making it a pleasant time to visit. Temperatures can dip to a minimum of 11°C (52°F), while they can soar to a maximum of 32°C (90°F). However, be prepared for some showers, as the region experiences about 234 mm (9.2 in) of precipitation over 15 days. With an average humidity level of 87%, it's wise to stay hydrated as you explore!

September Temperature in Saijo

In September in Saijo, the average temperature is 21°C (70°F). Maximum temperatures can reach 32°C (90°F), and minimums can drop to as low as 11°C (52°F). It's a perfect time for travelers to enjoy pleasant weather while exploring the local attractions.

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

The chart illustrates September temperature patterns in Saijo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saijo, September typically has an average temperature of 21°C (70°F), with highs reaching up to 32°C (90°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Saijo

In Saijo in September, the precipitation amount is 234 mm (9.2 in) spread over 15 days.

September Precipitation Trends in Saijo

The chart displays monthly precipitation patterns in Saijo, 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 Saijo, September typically receives around 234 mm (9.2 inches) of precipitation spread over approximately 15 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 Saijo

In Saijo in September humidity is 87%. With an average temperature of 21°C (70°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities quite exhausting and requiring frequent breaks to hydrate and cool off.

September Average Humidity in Saijo

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

In Saijo 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 Saijo.

Maximum UV Index Levels in Saijo for September

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

Data source: Saijo 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 Saijo Compares to Other Months

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

This table compares monthly weather conditions in Saijo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	73 mm (2.9 inches)	82%	moderate
February Weather	3°C (37°F)	85 mm (3.3 inches)	79%	moderate
March Weather	7°C (45°F)	129 mm (5.1 inches)	73%	very high
April Weather	12°C (53°F)	131 mm (5.2 inches)	74%	extreme
May Weather	17°C (63°F)	119 mm (4.7 inches)	84%	extreme
June Weather	20°C (68°F)	197 mm (7.7 inches)	86%	extreme
July Weather	24°C (76°F)	359 mm (14.1 inches)	92%	extreme
August Weather	26°C (78°F)	262 mm (10.3 inches)	92%	extreme
September Weather	21°C (70°F)	234 mm (9.2 inches)	87%	very high
October Weather	16°C (60°F)	171 mm (6.7 inches)	85%	high
November Weather	9°C (49°F)	44 mm (1.7 inches)	84%	moderate
December Weather	4°C (40°F)	89 mm (3.5 inches)	82%	moderate