Izumi-Sano Weather & Climate: Best Time to Visit

Visitors to Izumi-Sano can expect significant temperature changes throughout the year. On average, daytime temperatures range from a very warm 33°C (91°F) in August to a chilly 10°C (50°F) in January.

Nighttime temperatures range from 25°C (77°F) in August to 3°C (37°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Izumi-Sano is known for its substantial rain/snowfall, with annual precipitation reaching 1631 mm (64 in). The seasons in Izumi-Sano bring significant changes in precipitation. The wettest month, June, receives heavy rainfall, with an average of 231 mm (9.1 in) of precipitation. This rainfall is distributed across 18 rainy days.

In contrast, the driest month, January, experiences much less rainfall, totaling 78 mm (3.1 in) over 17 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Izumi-Sano Precipitation page.

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

The average number of days each month with precipitation

In Izumi-Sano, summer days are longer and more sunny, with daily sunshine hours peaking at 7.6 hours in August. As the darker season arrives, the brightness of the sun becomes less. February sees a soft sun for only 4.5 hours per average day.

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 Izumi-Sano.

The city experiences its highest humidity in July, reaching 76%. In March, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year