September Weather in Niikappu, Japan

Last updated: August 23, 2025

In September, the average temperature in Niikappu, Japan hovers around 19°C (67°F), offering a comfortable climate for visitors. Temperatures can range from a minimum of 14°C (57°F) to a maximum of 25°C (77°F). However, be prepared for some rain, as precipitation averages 124 mm (4.9 in) over 13 days. With an average humidity of 88%, the atmosphere is pleasantly moist, making this a unique time to experience all that Niikappu has to offer.

September Temperature in Niikappu

In September in Niikappu, the average temperature is 19°C (67°F). The maximum can reach 25°C (77°F), while the minimum can drop to as low as 14°C (57°F). This mild climate makes it an ideal destination for travelers seeking comfortable weather for outdoor activities.

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

The chart illustrates September temperature patterns in Niikappu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Niikappu, September typically has an average temperature of 19°C (67°F), with highs reaching up to 25°C (77°F) and lows dropping to around 14°C (57°F).

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

September Precipitation in Niikappu

In Niikappu in September, the total precipitation amount is 124 mm (4.9 in) over a span of 13 days.

September Precipitation Trends in Niikappu

The chart displays monthly precipitation patterns in Niikappu, 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 Niikappu, September typically receives around 124 mm (4.9 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 Niikappu

In Niikappu in September, humidity is 88%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket enveloping you, making travel feel sticky and exhausting as you navigate through the sweltering air.

September Average Humidity in Niikappu

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

In Niikappu 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 Niikappu.

Maximum UV Index Levels in Niikappu for September

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

Data source: Niikappu 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 Niikappu Compares to Other Months

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

This table compares monthly weather conditions in Niikappu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (31°F)	77 mm (3.0 inches)	84%	low
February Weather	-1°C (30°F)	76 mm (3.0 inches)	83%	moderate
March Weather	2°C (36°F)	86 mm (3.4 inches)	81%	moderate
April Weather	5°C (41°F)	88 mm (3.5 inches)	81%	very high
May Weather	9°C (49°F)	104 mm (4.1 inches)	86%	very high
June Weather	14°C (57°F)	127 mm (5.0 inches)	87%	very high
July Weather	18°C (65°F)	127 mm (5.0 inches)	93%	very high
August Weather	21°C (69°F)	159 mm (6.3 inches)	95%	very high
September Weather	19°C (67°F)	124 mm (4.9 inches)	88%	very high
October Weather	15°C (59°F)	192 mm (7.6 inches)	83%	high
November Weather	9°C (48°F)	120 mm (4.7 inches)	79%	moderate
December Weather	3°C (37°F)	124 mm (4.9 inches)	80%	low