July Weather in Nagaoka, Japan

Last updated: August 23, 2025

In Nagaoka, Japan, the average temperature in July is a warm 26°C (79°F). Expect temperatures to vary, with a minimum of 19°C (66°F) and a maximum soaring up to 37°C (98°F). Keep in mind that this month brings considerable rainfall, with an average precipitation of 324 mm (12.7 in) over 22 days, resulting in a high average humidity of 93%. Plan accordingly!

July Temperature in Nagaoka

In July, in Nagaoka, the average temperature is 26°C (79°F), with maximums reaching up to 37°C (98°F) and minimums dropping as low as 19°C (66°F). This warm climate makes Nagaoka an ideal destination for travelers looking to enjoy sunny days and pleasant evenings.

July Weather in Nagaoka: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Nagaoka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagaoka, July typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (98°F) and lows dropping to around 19°C (66°F).

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

July Precipitation in Nagaoka

In Nagaoka in July, the precipitation amount is 324 mm (12.7 in) during a span of 22 days.

July Precipitation Trends in Nagaoka

The chart displays monthly precipitation patterns in Nagaoka, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Nagaoka, July typically receives around 324 mm (12.7 inches) of precipitation spread over approximately 22 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Nagaoka

In Nagaoka in July, humidity is 93%. With an average temperature of 26°C (79°F), this humidity feels like a warm, damp blanket enveloping you, making every outdoor adventure feel like a steamy, tropical experience that can quickly lead to discomfort if you're not prepared.

July Average Humidity in Nagaoka

This chart illustrates the average monthly humidity levels in Nagaoka, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Nagaoka is approximately 93%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Nagaoka

In Nagaoka in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Nagaoka.

Maximum UV Index Levels in Nagaoka for July

The chart shows the monthly maximum UV Index (UVI) for Nagaoka in July, 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 July, the maximum UV index in Nagaoka typically reaches 11, which falls under the extreme exposure category.

Data source: Nagaoka July 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 July Weather in Nagaoka Compares to Other Months

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

This table compares monthly weather conditions in Nagaoka, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	56 mm (2.2 inches)	82%	moderate
February Weather	4°C (40°F)	62 mm (2.5 inches)	79%	high
March Weather	9°C (48°F)	125 mm (4.9 inches)	74%	very high
April Weather	13°C (56°F)	157 mm (6.2 inches)	76%	very high
May Weather	18°C (66°F)	154 mm (6.1 inches)	83%	extreme
June Weather	22°C (72°F)	161 mm (6.3 inches)	87%	extreme
July Weather	26°C (79°F)	324 mm (12.7 inches)	93%	extreme
August Weather	28°C (82°F)	228 mm (9.0 inches)	91%	extreme
September Weather	23°C (75°F)	172 mm (6.8 inches)	87%	very high
October Weather	18°C (64°F)	246 mm (9.7 inches)	85%	high
November Weather	12°C (53°F)	47 mm (1.8 inches)	83%	moderate
December Weather	6°C (43°F)	66 mm (2.6 inches)	83%	moderate