Otaru Weather and Climate: A Comprehensive Guide
The climate in Otaru is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to very cold in the cooler months.
It also has a relatively rain/snowy climate with high levels of precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average maximum day and minimum night temperature
In Otaru, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 24°C in August to a very cold -2°C in January.
Nighttime temperatures can drop, with average lows reaching -8°C in January. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Otaru experiences significant rain/snowfall throughout the year, averaging 1396 mm of precipitation annually. The seasons in Otaru, bring significant changes in precipitation. The wettest month, August, receives heavy rainfall, with an average of 180 mm of precipitation. This rainfall is distributed across 18 rainy days. In contrast, the driest month, April, experiences much less rainfall, totaling 77 mm over 18 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Otaru Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
In Otaru, summer days are longer and more sunny, with daily sunshine hours peaking at 6.6 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 2.9 hours per average day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Otaru.
The city experiences its highest humidity in July, reaching 76%. In April, 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
overcast and snow broken clouds and slight snow partly cloudy and snowForecast for Otaru
3 m/s
2 m/s
2 m/s
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Otaru in Japan
During the months of July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Most rainfall (rainy season) is seen in August and September.
The coldest season / winter is in the following months: January, February, March and December.
August has an average maximum temperature of 24°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of -2°C.
August tops the wettest month list with 180 mm of rainfall.
April is the driest month with 77 mm of precipitation.
May is the sunniest month with an average of 199 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
