September Weather in Hitachi, Japan

Last updated: August 23, 2025

In September, the average temperature in Hitachi, Japan is a pleasant 23°C (74°F). Expect a minimum of 17°C (63°F) and a maximum of 29°C (85°F), making it a lovely time to explore. However, be prepared for a fair amount of rain, with 172 mm (6.8 in) of precipitation expected over 16 days. With an average humidity of 84%, it’s wise to stay hydrated and enjoy the lush atmosphere!

September Temperature in Hitachi

In September in Hitachi, the average temperature is 23°C (74°F). Maximums can reach 29°C (85°F), while minimums can be as low as 17°C (63°F). This pleasant weather makes it an ideal time for traveling and exploring the local attractions.

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

The chart illustrates September temperature patterns in Hitachi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hitachi, September typically has an average temperature of 23°C (74°F), with highs reaching up to 29°C (85°F) and lows dropping to around 17°C (63°F).

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

September Precipitation in Hitachi

In Hitachi in September, the precipitation amount is 172 mm (6.8 in) over the course of 16 days.

September Precipitation Trends in Hitachi

The chart displays monthly precipitation patterns in Hitachi, 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 Hitachi, September typically receives around 172 mm (6.8 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 Hitachi

In Hitachi in September, humidity is 84%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel sticky and heavy, while the air's thickness can be quite exhausting for long periods of travel.

September Average Humidity in Hitachi

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

In Hitachi in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hitachi.

Maximum UV Index Levels in Hitachi for September

The chart shows the monthly maximum UV Index (UVI) for Hitachi 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 Hitachi typically reaches 9, which falls under the very high exposure category.

Data source: Hitachi 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 Hitachi Compares to Other Months

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

This table compares monthly weather conditions in Hitachi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	59 mm (2.3 inches)	76%	moderate
February Weather	7°C (44°F)	49 mm (1.9 inches)	75%	moderate
March Weather	9°C (49°F)	162 mm (6.4 inches)	72%	high
April Weather	13°C (55°F)	133 mm (5.2 inches)	73%	very high
May Weather	17°C (63°F)	146 mm (5.7 inches)	80%	very high
June Weather	20°C (69°F)	138 mm (5.4 inches)	87%	extreme
July Weather	24°C (75°F)	197 mm (7.7 inches)	92%	extreme
August Weather	26°C (78°F)	129 mm (5.1 inches)	90%	very high
September Weather	23°C (74°F)	172 mm (6.8 inches)	84%	very high
October Weather	19°C (66°F)	252 mm (9.9 inches)	80%	high
November Weather	14°C (58°F)	98 mm (3.8 inches)	77%	moderate
December Weather	9°C (48°F)	75 mm (3.0 inches)	77%	moderate