September Weather in Saiki, Japan

Last updated: August 23, 2025

In Saiki, Japan, the average temperature in September hovers around 25°C (77°F), with a comfortable minimum of 18°C (65°F) and a maximum reaching up to 32°C (91°F). However, expect a fair amount of rain, with 224 mm (8.8 in) of precipitation spread over 16 days. Humidity can be quite high, averaging at 84%, creating a lush and vibrant atmosphere!

September Temperature in Saiki

In September in Saiki, the average temperature is 25°C (77°F). The maximum can reach 32°C (91°F) and the minimum can be as low as 18°C (65°F). This makes Saiki an ideal destination for travelers seeking warm and pleasant weather.

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

The chart illustrates September temperature patterns in Saiki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saiki, September typically has an average temperature of 25°C (77°F), with highs reaching up to 32°C (91°F) and lows dropping to around 18°C (65°F).

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

September Precipitation in Saiki

In Saiki in September, the total precipitation amount is 224 mm (8.8 in) spread over 16 days.

September Precipitation Trends in Saiki

The chart displays monthly precipitation patterns in Saiki, 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 Saiki, September typically receives around 224 mm (8.8 inches) of precipitation spread over approximately 16 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 Saiki

In Saiki in September, humidity is 84%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities challenging and prompting travelers to seek shade and stay hydrated.

September Average Humidity in Saiki

This chart illustrates the average monthly humidity levels in Saiki, 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 Saiki is approximately 84%, 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 Saiki

In Saiki 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 Saiki.

Maximum UV Index Levels in Saiki for September

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

Data source: Saiki 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 Saiki Compares to Other Months

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

This table compares monthly weather conditions in Saiki, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	57 mm (2.3 inches)	75%	moderate
February Weather	9°C (48°F)	81 mm (3.2 inches)	71%	high
March Weather	12°C (55°F)	126 mm (5.0 inches)	71%	very high
April Weather	16°C (61°F)	118 mm (4.7 inches)	78%	very high
May Weather	20°C (68°F)	163 mm (6.4 inches)	84%	extreme
June Weather	23°C (73°F)	221 mm (8.7 inches)	86%	extreme
July Weather	26°C (80°F)	326 mm (12.8 inches)	92%	extreme
August Weather	28°C (82°F)	195 mm (7.7 inches)	91%	extreme
September Weather	25°C (77°F)	224 mm (8.8 inches)	84%	very high
October Weather	21°C (70°F)	259 mm (10.2 inches)	83%	high
November Weather	16°C (60°F)	61 mm (2.4 inches)	81%	high
December Weather	11°C (51°F)	61 mm (2.4 inches)	79%	moderate