Zao Onsen Weather and Climate: A Comprehensive Guide
The climate in Zao Onsen is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to cold in the cooler months.
It is also known for its large amounts of rain/snowfall.
Now, let’s break down all the climate details for a clearer picture.
Average maximum day and minimum night temperature
In Zao Onsen, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 28°C in August to a chilly 3°C in the coolest month, January.
Nights are cooler, with lows often dropping to around -5°C during the colder months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Zao Onsen experiences significant rain/snowfall throughout the year, averaging 1470 mm of precipitation annually. The climate in Zao Onsen shows significant variation throughout the year. Expect heavy rainfall in July, with an average of 192 mm of precipitation over 21 rainy days. In contrast, November offers drier and sunnier days, with around 86 mm of rainfall over 22 rainy days. For more details, please visit our Zao Onsen 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
Zao Onsen offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between April (6.5 hours daily) and July (4.1 hours daily) provides a bit of variety for visitors and residents. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Zao Onsen.
The city experiences its highest humidity in July, reaching 84%. 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
partly cloudy and small chance of slight snow broken clouds and no rain broken clouds and small chance of slight snowForecast for Zao Onsen
2 m/s
2 m/s
4 m/s
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Zao Onsen in Japan
During the months of May, June 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 July, August and September.
August has an average maximum temperature of 28°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 3°C.
July tops the wettest month list with 192 mm of rainfall.
November is the driest month with 86 mm of precipitation.
April is the sunniest month with an average of 195 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.
