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snowy resort
Lat Long: 36.94° N 137.90° E
Ski Japan - Niigata

Itoigawa Seaside Valley Snow History

Weather Forecast for Itoigawa Seaside Valley at 490m altitude

Issued: 2 am 01 May 2026 (local time)

Forecast update in  hr  min

Is Itoigawa Seaside Valley snowsure?

The snowiest week in Itoigawa Seaside Valley is week 2 of January. There are typically 4.7 snowy days during this week with 52cm of snowfall. Check out the Itoigawa Seaside Valley 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 Itoigawa Seaside Valley

MonthSnow amount (week)Snow days (week)
December28cm2.5 days
January43cm4.4 days
February30cm3.8 days
March11cm2.0 days
April1cm0.3 days

Average Snow and Weather Conditions in Itoigawa Seaside Valley during May (week 1):

The average snowfall forecast during week 1 of May for Itoigawa Seaside Valley is 0 cm. There are typically 0.0 snowy days during this week.Itoigawa Seaside Valley normal weather and snow conditions during the first week of May at the middle elevation of the ski area at 490m, based on historical averages over the last 16 years: At this time of year the average freezing level (2907m) is well above the mid altitude of Itoigawa Seaside Valley. Snowy weather is very unlikely in Itoigawa Seaside Valley at the start of May but in an average year there are two or three days during this week each year that are wet. Usual temperatures are well above freezing both night and day at the mid altitude in Itoigawa Seaside Valley during week one of May with the average afternoon temperature 14.8°C and the minimum temperature 13.0°C. Expect the sun to shine on three or four days per week. Generally light winds (average 11km/h).


Snow History: Compare Resorts


Compare Itoigawa Seaside Valley with:

Snow Depths

Recorded snow depths for the upper and lower slopes in Itoigawa Seaside Valley and (2007 – 2024).

Winter
Summer

Itoigawa Seaside Valley


Lower Slopes
Upper Slopes
Fresh Snow

Average Snow Conditions in

Best ski days per week in Itoigawa Seaside Valley and (2007 – 2024)

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 Itoigawa Seaside Valley 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 Itoigawa Seaside Valley and (2007 – 2024)

Winter
Summer

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

The snowiest weeks of the year in Itoigawa Seaside Valley 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 Itoigawa Seaside Valley and (2007 – 2024)

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 Itoigawa Seaside Valley 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.