Nagaoka Temperature by Month

Nagaoka, Niigata Prefecture, Japan has an average annual maximum temperature of 19°C (66°F), ranging from 6°C (43°F) in January to 32°C (90°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Visitors to Nagaoka will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 22°C (72°F) in August to -2°C (28°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Nagaoka by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 193 hours of sunshine.

The chart below shows the average temperature throughout the year:

Nagaoka's average annual maximum temperature is 19°C (66°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Nagaoka's weather, including monthly rainfall, sunshine hours, and humidity, visit our Nagaoka climate page.