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Marunuma Kogen ski resort snow
Ski Japan - Gunma

Marunuma Kogen Snow History

36.81° N 139.34° E

Weather Forecast for Marunuma Kogen at 1695 m altitude

Next snow in Marunuma Kogen:
0.4 cm on Tue 27th
Issued:
8 pm 21 Oct 2026 (local time)
Forecast update in:
 hr.  min.

Is Marunuma Kogen snowsure?

The snowiest week in Marunuma Kogen is week 2 of January. There are typically 5.5 snowy days during this week with 47 cm of snowfall. Check out the Marunuma Kogen Snow History graphs below. Select any week of the year to see the typical Ski Conditions, Snowfall Amount and Temperature based on nowcast weather data over the last 11 years.

Average monthly snow in Marunuma Kogen

MonthSnow amount (week)Snow days (week)
December31 cm4.3 days
January39 cm5.2 days
February34 cm4.9 days
March28 cm3.9 days
April11 cm2.0 days

Average Snow and Weather Conditions in Marunuma Kogen during October (week 4):

The average snowfall forecast during week 4 of October for Marunuma Kogen is 1 cm. There are typically 0.6 snowy days during this week. Marunuma Kogen typical weather and snow conditions during the last week of October at the middle elevation of the ski area at 1695m, based on historical averages over the last 18 years: At this time of year the typical freezing level (3047m) is far above the mid altitude of Marunuma Kogen. A day with snowfall occurs on average every second year during the last week of October but in an average year there are two or three days during this particular week each year that are wet. In the years when snow falls at this time of year, forecast model average snowfall for the week is 2cm. Temperatures generally above freezing both day and night in Marunuma Kogen during week four of October with average maximum temperature 6.3°C and minimum temperature 4.8°C at the mid altitude. On average, a couple of days per week will have some sunshine. Generally light winds (average 13km/h).


Snow History: Compare Resorts


Compare Marunuma Kogen with:

Snow Depths

Recorded snow depths for the upper and lower slopes in Marunuma Kogen and (2007 – 2026).

Winter
Summer

Marunuma Kogen

 


Lower Slopes
Upper Slopes
Fresh Snow

Average Snow Conditions in

Best ski days per week in Marunuma Kogen and (2007 – 2026)

Winter
Summer

Bluebird Powder Day
(Fresh snow, mostly sunny, light wind)
Powder Day
(Fresh snow, limited sun, any wind)
Bluebird Day
(Average snow, mostly sunny, light wind)
Very windy days
(>30km/h)

The most cherished days on the mountain in Marunuma Kogen are Bluebird Powder days when it is mostly sunny with light winds following very recent snowfall. Poorer weather conditions may prevail on Powder days when the visibility can be limited but the snow is significantly deep and fresh for keen powder-hounds. Bluebird days can suit many skiers that aren’t necessarily hunting powder but want to enjoy the snowy mountains in sunnier conditions and light winds.


Average Snowfall in

Graph showing the average precipitation (snow/rain) in Marunuma Kogen and (2007 – 2026)

Winter
Summer

Snowfall amount
(bar chart)
Days with significant snowfall.
(>5cm)
Days with significant rainfall.
(>5mm)

The snowiest weeks of the year in Marunuma Kogen are shown but also bear in mind the number of days that it typically snows each week if you want regular fresh tracks. The risk of a rainy day is shown but be sure to switch between elevations to see if lower lifts are rain affected or higher lifts remain snowy despite any rain further down the mountain.


Average Temperature in

Graph showing the average temperature and freezing level at Marunuma Kogen and (2007 – 2026)

Winter
Summer

Average temperature
Maximum
Minimum
Temperatures
Above freezing
Below freezing
Freezing level
Dashed line

The highest and lowest temperatures averaged for each week of the year in Marunuma Kogen are shown. Check out the risk of freze-thaw conditions prevailing at different elevations for any given week. We also show the extremes of temperature (blue/red dots) that reveal the chance of unusually warm or cold conditions.