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August Weather in Nagaoka, Japan

Last updated: August 23, 2025

In August, the average temperature in Nagaoka, Japan reaches a warm 28°C (82°F). Expect a comfortable minimum of 17°C (63°F) and the occasional peak of 37°C (98°F). With 228 mm (9.0 in) of precipitation spread over 14 days, be prepared for some showers. The overall average humidity sits at a high 91%, contributing to that tropical feel!

August Temperature in Nagaoka

In August in Nagaoka, the average temperature is 28°C (82°F). Maximums can reach up to 37°C (98°F), and minimums can drop as low as 17°C (63°F). This climate makes Nagaoka an ideal destination for travelers seeking warm and pleasant weather.

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

The chart illustrates August 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, August typically has an average temperature of 28°C (82°F), with highs reaching up to 37°C (98°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec394048566572798274645343
Data source: Temperature data for Nagaoka generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Nagaoka

In Nagaoka in August, the total precipitation amount is 228 mm (9.0 in) distributed over 14 days.

August Precipitation Trends in Nagaoka

The chart displays monthly precipitation patterns in Nagaoka, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Nagaoka, August typically receives around 228 mm (9.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec56621251581551613242281722464766
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Nagaoka

In Nagaoka in August humidity is 91%. With an average temperature of 28°C (82°F), this humidity feels like a thick blanket wrapping around you, making each step feel heavy and every breath slightly more laborious, which can be quite challenging for traveling.

August Average Humidity in Nagaoka

This chart illustrates the average monthly humidity levels in Nagaoka, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Nagaoka is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Nagaoka

In Nagaoka in August, 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 August

The chart shows the monthly maximum UV Index (UVI) for Nagaoka in August, 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 August, the maximum UV index in Nagaoka typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Nagaoka August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)56 mm (2.2 inches)82%moderate
February Weather4°C (40°F)62 mm (2.5 inches)79%high
March Weather9°C (48°F)125 mm (4.9 inches)74%very high
April Weather13°C (56°F)157 mm (6.2 inches)76%very high
May Weather18°C (66°F)154 mm (6.1 inches)83%extreme
June Weather22°C (72°F)161 mm (6.3 inches)87%extreme
July Weather26°C (79°F)324 mm (12.7 inches)93%extreme
August Weather28°C (82°F)228 mm (9.0 inches)91%extreme
September Weather23°C (75°F)172 mm (6.8 inches)87%very high
October Weather18°C (64°F)246 mm (9.7 inches)85%high
November Weather12°C (53°F)47 mm (1.8 inches)83%moderate
December Weather6°C (43°F)66 mm (2.6 inches)83%moderate

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