Shinano Temperature by Month

Shinano, Niigata Prefecture, Japan has an average annual maximum temperature of 16°C (61°F), ranging from 3°C (37°F) in January to 29°C (84°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The weather in Shinano experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 20°C (68°F) in August to -5°C (23°F) in January.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 206 hours of sunshine.

The chart below shows the average temperature throughout the year:

Shinano's average annual maximum temperature is 16°C (61°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.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

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

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.

In Shinano, January is the coolest month, with average highs of 3°C (37°F) and humidity around 78%, considered high. In August, the warmest month, temperatures average 29°C (84°F) with 72% humidity, conditions that feel high. For a full picture, see our humidity page.

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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Shinano this rarely lasts long on the ground.

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