Shiojiri Weather & Climate: Best Time to Visit

In Shiojiri, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in August, the warmest time of the year, to a chilly 2°C (36°F) during cooler months like January.

At night, you can expect temperatures ranging from 18°C (64°F) in August to around -8°C (18°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Shiojiri experiences significant rain/snowfall throughout the year, averaging 1948 mm (77 in) of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, July it receives heavy rainfall, averaging 245 mm (9.6 in) of precipitation, recorded across 22 rainy days. In contrast, the driest month December brings less snow/rainfall, with 109 mm (4.3 in) over 17 snowy/rainy days. For more details, please visit our Shiojiri Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

While the amount of sunshine in Shiojiri varies throughout the year, all seasons offer their own charm. Enjoy up to 7.0 hours of daily sun in May, and experience slightly darker atmosphere in January, with about 4.3 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Shiojiri.

The city experiences its highest humidity in January, reaching 78%. In April, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year