Muroran Weather & Climate: Best Time to Visit

In Muroran, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 24°C (75°F) in August to a very cold 0°C (32°F) in January.

Nighttime temperatures range from 19°C (66°F) in August to -5°C (23°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Muroran experiences significant rain/snowfall throughout the year, averaging 1285 mm (51 in) of precipitation annually. The seasons in Muroran bring significant changes in precipitation. The wettest month, August, receives heavy rainfall, with an average of 189 mm (7.4 in) of precipitation. This rainfall is distributed across 19 rainy days.

In contrast, the driest month, February, experiences much less snow/rainfall, totaling 60 mm (2.4 in) over 25 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Muroran Precipitation page.

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

The average number of days each month with precipitation

In Muroran, summer days are longer and more sunny, with daily sunshine hours peaking at 6.5 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.2 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 Muroran.

The city experiences its highest humidity in July, reaching 82%. In April, the humidity drops to its lowest level at 67%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year