Ski resort Ski resort · Japan

Best time to visit Itoigawa Seaside Valley

The colour shows how good it gets. Tap a card to see that kind of trip at its best time of year; your own preferences stay as they are.

The ski season in Itoigawa Seaside Valley typically runs January and February, when there is snow on the ground and it is cold enough. For a visit without snow, the best time is June, with daytime temperatures around 22°C.

Itoigawa Seaside Valley at a glance: warmest in August with daytime temperatures around 28°C and coolest in January (2°C). The wettest month is July (231 mm) and the driest April (99 mm), with about 1,840 mm of rain a year. The sea is warmest in August (28°C). Sunniest in April.

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Itoigawa Seaside Valley

670 m
Pleasantly warm, rainy and grey
52
22°/14°20°160 mm23 %15 h
JanFebMarAprMayJunJulAugSepOctNovDec
A typical mid-June in Itoigawa Seaside Valley
Sunny 4Cloudy 10Rain 16
Daytime temperature (night ☾)
14°19°26°−8°33°
Sea temperature
20°−8°33°
Daylight (solar time)
04:3919:21
0006121824
14 h 41 m
Precipitation
0240 mm
160 mm
Air feel
FreshComfortableHumidMuggy
RH 77 %

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The climate in Itoigawa Seaside Valley through the year

When to go

No month in Itoigawa Seaside Valley reaches a good score (65 or more) with the default preferences. June comes closest with 52 out of 100. A typical June day reaches 22°C and the night falls to 14°C, with rain on about 18 days and clear sky 23 % of the time. May and September are a fair alternative, with scores of 51–51. The lowest score is in February (14), when days are cool at around 3°C.

Seasons and rain

The seasons are sharply different: a August day (28°C) is about 26 degrees warmer than a January day (2°C). Nights typically drop below freezing in December–March. Precipitation is spread evenly over the year, from 99 mm in April to 231 mm in July (about 1,840 mm in all). Snow typically lies on the ground in December–March, deepest in February (about 90 cm).

Sea and daylight

The sea is 22°C or warmer in July–October, peaking at 28°C in August. It is coldest in March (10°C). Daylight lasts from about 9.5 hours in December to 14.5 hours in June.

By type of trip

The best months change with what you want to do. Each of Eddigo’s trip types has its own preferred daytime temperature and its own weights for rain, humidity and sun. Itoigawa Seaside Valley scores 65 or more in these months:

  • Cooler weather (10–20 °C): April–June and October–November, up to 81
  • Skiing: snow cover and cold enough in January and February

How it compares

Of the 191 destinations Eddigo covers in Japan, Itoigawa Seaside Valley is the 94th coolest over the year and the 32nd wettest. In June, when Itoigawa Seaside Valley scores 52, Lotte Arai Resort (26 km away) scores 52 and Hakuba (27 km away) scores 50. See where to go in June for the best destinations that month.

Month by month

MonthScoreDayNightSeaRainWet days (≥ 1 mm)SunDaylightFeels like
January152°−5°13°164 mm2229 %10 hCold and snowy · ski conditions
February143°−5°11°104 mm1828 %11 hCold and snowy · ski conditions
March157°−3°10°115 mm1930 %12 hChilly and rainy
April3114°3°12°99 mm1441 %13 hMild and showery
May5119°9°15°109 mm1535 %14 hPleasantly warm and rainy
June5222°14°20°158 mm1623 %15 hPleasantly warm, rainy and grey
July4526°19°25°231 mm2018 %14 hWarm, rainy and grey
August4728°20°28°176 mm1932 %14 hWarm and rainy
September5123°16°26°197 mm1824 %12 hPleasantly warm, rainy and grey
October4118°10°22°155 mm1627 %11 hMild and rainy
November1712°3°19°145 mm1836 %10 hChilly and rainy
December165°−2°15°188 mm2535 %10 hCold and snowy

The score (0–100) is calculated from a range of variables, and changes with your preferences.

Climate averages 2016–2025 (ERA5, CRU TS). Sea temperature from ERA5. Not a forecast. Elevation: 665 m. Coordinates: 36.94, 137.90.